ASSEMBLY OF THE SAME FILTER AND RELIEF VALVE

专利摘要:
the present invention relates to a filter assembly comprising a housing, a filter element therein and a plate enclosing the filter element within the housing. the filter assembly further includes a fluid flow control assembly disposed between one end of the filter element and the plate. the fluid flow control assembly includes a check valve and a relief valve seat that the check valve engages to prevent fluid flow through a bypass. the check valve is held in a sealed position against the relief valve seat by a biased member retained by the relief valve seat. the strength of the biased limb is overcome when pressure in the fluid acting on the check valve exceeds a certain level, causing the check valve to move away from the relief valve seat, and allowing the fluid to flow through the control for an outlet opening of the filter assembly, bypassing the filter element.
公开号:BR112019022315A2
申请号:R112019022315-0
申请日:2018-04-24
公开日:2020-05-26
发明作者:Auxter Daniel；L. Memmer Timothy
申请人:Fram Group Ip Llc；
IPC主号:

专利说明:

Descriptive Report of the Invention Patent for “ASSEMBLY OF FILTER AND RELIEF VALVE OF THE SAME”.
CROSS REFERENCE TO RELATED ORDERS
[0001] The present application claims priority benefit for United States Provisional Patent Application No. 62 / 489,035 filed on April 24, 2017. The descriptions shown in the reference application are incorporated herein by reference in their entirety for reference. .
BACKGROUND
1. Description field
[0002] The present invention relates in general to a fluid filter assembly and, more particularly, to a fluid filter assembly having a relief valve.
2. Background to the Description
[0003] Filter assemblies generally include a housing having an open end, a filter element received in the housing, a base plate closing the open end and having inlet and outlet openings therein, and a valve for cooperation with the openings of inlet to allow oil to flow into the filter through the inlet openings, but prevent oil flow in a reverse direction. Prior art filters have included a combination valve having two portions, the first portion for closing the inlet openings to block the flow of oil back from the inlet openings when the oil is not being circulated and the second portion for opening a bypass opening when the filter medium is clogged to return oil to the engine to keep the engine lubricated even though the filter element is clogged. Such a construction is disclosed in Stanhope et al., U.S. Patent No. 7,175,761.
[0004] The present description improves current valves and overcomes disadvantages and deficiencies of such prior art constructions.
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SUMMARY
[0005] In an illustrative embodiment, the filter assembly comprises a housing opening at one end and containing a filter element at the end and a plate closing the opening end of the housing and enclosing the filter element within the housing. The filter assembly further includes a fluid flow control assembly disposed between one end of the filter element and the plate. The fluid flow control assembly includes a check valve assembly and a relief valve, the relief valve assembly including a relief valve seat on which the check valve seals to prevent fluid flow through a bypass passage of the fluid flow control assembly. The check valve is held in a position sealed against the relief valve seat by a biased member contained in place by the relief valve seat. The strength of the tendentious member is overcome when pressure in the fluid when acting on the check valve reaches or exceeds a certain level, causing the check valve to move away from the relief valve seat against the tendency of the tendentious member, and allowing fluid to flow through the relief valve assembly to an outlet opening of the filter assembly, bypassing the filter element of the filter assembly.
[0006] In any of the present embodiments, the relief valve assembly may comprise a valve seat with a seat portion and a centering portion. The seat portion may extend generally perpendicular to a longitudinal axis of the filter assembly when the relief valve assembly is inserted into the filter assembly. The valve seat can be configured to extend through an opening of the check valve with an end point of the check valve resting on an external surface
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3/58 of the valve seat. The check valve may include a horizontal portion ending at the end point, the horizontal portion extending through a portion of the valve seat to block fluid flow through an opening in the relief valve assembly.
[0007] In any illustrative embodiment, the valve seat may include a check valve seal ring within the seat portion. The check valve sealing ring includes an upper surface on which the check valve rests when sealed against the seat portion to seal the opening of the relief valve assembly. The check valve can be held in the sealed position against the check valve sealing ring by a bias force applied to the top of the check valve above the check valve sealing ring, where the bias force can be only overcome by applying a predetermined force from the fluid flowing in a bypass passage from the valve seat over the check valve.
[0008] In any illustrative embodiment, the relief valve assembly may comprise a biased member that tends the check valve to seal with the check valve sealing ring, wherein the biased member is held in place by a or more stop surfaces of the valve seat. The biased member may be a spring or similar mechanism that is maintained between the stop surfaces and an upper surface of the check valve to keep the check valve in a closed position. An optional washer can extend between a lower surface of the biased member and the upper surface of the check valve, so that the optional washer is able to transfer pressure from the biased member to the check valve. [0009] In any illustrative embodiment, the valve seat can also include a cartridge sealing ring that is annularly external
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4/58 to the check valve sealing ring and which includes an upper surface configured to allow a portion of the check valve to rest. A bypass span can extend between the cartridge sealing ring and the check valve sealing ring for fluid to flow through when the bypass course is not blocked by the check valve. The check valve is normally configured to extend in the bypass to prevent fluid from flowing through it, but the check valve is moved away from the bypass when pressure in the fluid meets or exceeds a predetermined level.
[0010] In illustrative embodiments, the valve seat includes a centering portion that is substantially perpendicular to the sealing portion and is configured to extend generally along the longitudinal axis of the filter assembly. The centering portion includes one or more annular walls that are configured to be partially received within a central core opening of the filter assembly to allow the valve seat to be properly centered with them. The centering portion further includes one or more bypass openings extending between the annular walls, the bypass openings fluidly connected to the flow of fluid passing through the bypass in the seat portion of the valve seat. The bypass openings are configured to direct fluid flow to the outlet opening of the filter assembly when the fluid flows through the bypass opening, allowing such fluid to bypass the filter element of the filter assembly.
[0011] In illustrative embodiments, the valve seat may include a perforated plate or base plate sealing ring that substantially defines a lower part of the valve seat. The baseplate sealing ring is configured to support a portion of the baseplate of the filter assembly when the baseplate is
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5/58 inserted into the filter housing. In certain embodiments, the sealing ring of the base plate is pressed against a shoulder portion of the base plate extending into the housing, the shoulder portion including one or more of the fluid inlet openings flowing into the filter assembly . The sealing ring of the base plate can include one or more alignment elements that can align with one or more portions of the base plate to allow proper alignment of the fluid flow control assembly between the base plate. The fluid flow control assembly can be retained against the base plate without a pressure fitting or lock.
[0012] In any illustrative embodiment, the valve seat can be configured as a two-piece (or more) valve seat component that is connected as the relief valve assembly is assembled. In any illustrative embodiment, for example, the check valve seal ring which is formed as a separate component from the cartridge seal ring. In other cases, the seat portion may be formed as a separate component from the centering portion of the valve seat. Other ways of separating the valve seat components are provided here.
[0013] These and other elements of the present description are described more fully with reference to the detailed description and the present drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] FIG. 1 is a side perspective view of a relief valve component for a filter assembly of an exemplary embodiment of the present description;
[0015] FIG. 2 is a bottom perspective view of the relief valve component of FIG. 1;
[0016] FIG. 3 is a cross-sectional view of an assembly
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6/58 of filter including a fluid flow control assembly, the fluid flow control assembly including a relief valve assembly that includes a relief valve component of FIG. 1 and a check valve, the fluid flow control assembly configured to rest on the top of a threaded base plate or perforated plate at one end of the filter assembly that allows fluid to flow through the filter assembly;
[0017] FIGS. 4A and 4B are a cross-sectional view of a section of the filter assembly of FIG. 3 illustrating a detailed view of the fluid flow control assembly in a natural state with no fluid flowing through the fluid assembly;
[0018] FIGS. 5A and 5B are seen in cross section similar to FIGS. 4A and 4B illustrating a detailed view of the fluid flow control assembly in a normal flow state, where fluid is flowing through the filter assembly and fluid flow through the filter assembly is not substantially restricted;
[0019] FIGS. 6A and 6B are seen in cross section similar to FIGS. 5A and 5B illustrating a detailed view of the fluid flow control assembly in an alternate flow or bypass state, where the fluid flowing through the filter assembly is restricted or blocked at least to some extent so that the assembly of relief valve allows fluid to enter the filter assembly to bypass a filter component from the filter assembly and thereby reduces pressure within the filter assembly;
[0020] FIG. 7 is a cross-sectional view of the relief valve component generally obtained along lines 7-7 of FIG. 1;
[0021] FIG. 8 is an exploded view of the filter assembly illustrated in FIG. 3 illustrating a filter housing, a filter component, a fluid flow control assembly, a base plate
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7/58 threaded and an end plate or bottom, and wherein the fluid flow control assembly includes a relief valve assembly, including the relief valve component of FIG. 1 and a check valve;
[0022] FIG. 9 is an exemplary flow curve of differential pressure flow rate in an exemplary embodiment of a fluid flow control assembly of the present description;
[0023] FIG. 10 is a side perspective view of an alternative two-piece relief valve component for a filter assembly of an exemplary embodiment of the present description;
[0024] FIG. 11 is a bottom perspective view of the two-piece relief valve component of FIG. 10;
[0025] FIG. 12 is an exploded view of the two-piece relief valve component of FIG. 10;
[0026] FIG. 13 is a side perspective view of another two-piece relief valve component for a filter assembly of an exemplary embodiment of the present description;
[0027] FIG. 14 is a bottom perspective view of the two-piece relief valve component of FIG. 13;
[0028] FIG. 15 is an exploded view of the two-piece relief valve component of FIG. 13;
[0029] FIG. 16 is a side perspective view of another two-piece relief valve component for a filter assembly of an exemplary embodiment of the present description;
[0030] FIG. 17 is a bottom perspective view of the two-piece relief valve component of FIG. 13; and
[0031] FIG. 18 is an exploded view of the two-piece relief valve component of FIG. 13.
DETAILED DESCRIPTION
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[0032] The present invention relates to a filter assembly including a fluid flow control assembly. Although the present invention can be realized in many different forms, a specific embodiment is discussed here with the understanding that the present description should be considered only as an example of the principles of the description, and is not intended to limit the description to the illustrated embodiment.
[0033] With references to FIGS. 3 and 8, a filter assembly 20 is shown to have a cylindrical coating generally in the form of a cup or housing 22 which is opened at a first or lower open end 24 and closed at a second or higher opposite end 26. A filter, for example For example, in the form of a filter component or element 28 that includes a filter medium mounted on a core 30, it is disposed within the housing 22, wherein the filter element 28 includes a first or lower end 32 positioned adjacent the first end 24 of the housing and a second or higher end 34 adjacent to the second end 26 of the housing 22. The core 30 can define an opening 31 into which fluid flows after it has passed through the filter element 28, and the opening 31 can extend in a longitudinal axis 82 of the filter assembly 20 so that the opening 31 is substantially positioned within the center of the housing 22. In various embodiments, a cover 38 can be coupled to the lower open end 24 of housing 22 to substantially enclose filter assembly 20. While a particular filter is described herein, one skilled in the art will understand that the principles of the present description can be applied to any suitable filter assembly having any suitable filter.
[0034] In various forms of the filter assembly 20, a threaded base plate or perforated plate 36 is provided to be connected to the lower open end 24 of housing 22. The base plate 36
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9/58 can be configured between cover 38 and filter element 28 within housing 22. A resilient, annular gasket 25 can be received and retained in a recess 39 in cover 38 to provide a seal between the filter assembly 20 and a motor block (not shown) to which the filter assembly 20 is attached in normal use. Optionally any other additional or suitable alternative seal can be used. A biased element 40, for example, a spring, can be provided between the upper end 34 of the filter element 28 and an interior 44 of the housing 22 to tend the filter element 28 towards the first end 24 of the housing 22. In embodiments illustrative, bias element 40 tends filter element 28 towards base plate 36 to apply pressure to base plate 36. bias element 40 can be replaced with any element ^) that tends the filter towards the first end 24 of housing 22 or can be omitted.
[0035] Filter element 28 may include any suitable filter medium 45 comprised of, for example, pleated filter material composed of cellulose with a little polyester, although other forms of filter medium are provided for here. The core 30, which can be molded from any suitable material, for example, a glass-filled plastic, such as nylon, is perforated to allow fluid to flow through it in use. The filter element 28 can include a first face 46 suitable for receiving and allowing fluid flow through the filter element, and a second face 48 suitable for allowing fluid flow from the filter medium, with the second face 48 being attached to the core 30, as seen in FIG. 3. The filter medium 45 can be formed from a sheet of pleated material joined along the facing ends by a suitable adhesive to form an annular sleeve in the core 30. End caps 50, 52 can be arranged at the bottom and at the top, respectively,
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10/58 of the filter element 28. End caps 50, 52 can be made of a suitable composite material, for example, a cellulose / polyester composite. In various embodiments, end caps 50 and 52 are configured to prevent fluid flow to the filter medium 45 and can further direct fluid fluid within housing 22. In an illustrative embodiment, end caps 50, 52 they are connected to the filter medium 45, for example, by ultrasonic welding, to form a seal between the ends of the filter medium 45 and the end caps 50, 52 to prevent fluid from flowing between these elements in use. The end caps 50, 52 can alternatively be connected to the filter medium in any other suitable way. In various embodiments, end caps 50 and 52 can be a non-rigid material, such as cellulose fiber or polyester.
[0036] In various modalities, the end plate or base 36 can include several designs or configurations. For example, base plate 36 can be a double distortion design (as illustrated in FIG. 3) or it can be an inverted type of base plate 36. Other types of base plates 36 include a flat design. The present invention is intended for use in a filter assembly 20 that incorporates substantially any type of baseplate design 36. In an exemplary embodiment, baseplate 36 is configured to include a raised portion or shoulder 110 that extends to into the housing 22 and towards the filter element 28 when the base plate 36 is attached to the housing 22. The raised portion 110 includes an upper surface 112 that can support the components retained in the housing 22, as described further here. In various embodiments, the raised portion 110 includes one or more flow openings 66 to allow fluid flow to the filter assembly 20.
[0037] The filter element 28 and the housing 22 of the filter assembly
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11/58 filter 20 may be similar to filter element 28 and housing 22 as disclosed in U.S. Patent No. 7,175,761, the description of which is incorporated herein by reference in its entirety. In other illustrative embodiments, the principles of the present invention can be applied to any suitable filter assembly having any suitable housing and / or any suitable filter element.
[0038] With reference to FIGS. 3-4B, an embodiment of a fluid flow control assembly 54 retained within the filter housing 22 is shown. The fluid flow control assembly 54 includes a relief valve seat assembly 56 and a check valve 58, as will be described here. The fluid flow control assembly 54 is retained adjacent to the lower end 32 of the filter element 28 and an upper or inner side 62 of the base plate 36. In various embodiments, the fluid flow control assembly 54 is supported on the or contact the raised portion 110 of the base plate 36, and can also rest or rest on the upper surface 112 of the raised portion 110. In illustrative embodiments, the fluid flow control assembly 54 is configured to control incoming fluid flow in the filter assembly 20 before the fluid is filtered through the filter element 28. An outlet opening 80 is provided centrally within the base plate 36, defined by a flange 37 of the base plate 37, to allow fluid to flow out of the filter assembly 20 and the fluid flow control assembly 54 can be configured to be adjacent to outlet opening 80. As seen in FIG. 3, an outlet opening 80 can be arranged centrally on the longitudinal axis 82 of the filter assembly 20. Although outlet opening 80 is shown to be circular in cross-section, outlet opening 80 may have any other suitable configuration depending on application for filter assembly 20. Optionally, outlet opening 80 can be oriented in any suitable way. THE
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12/58 fluid flow control assembly 54 can be retained adjacent to outlet opening 80 so that fluid flow control assembly 54 does not block or restrict fluid flow as it exits through outlet opening 80.
[0039] As illustrated in Figures 4A-6B, the check valve 58 of the fluid flow control assembly 54 is configured to control flow through a first opening or inlet openings 66 in the base plate 36. As illustrated, the openings 66 can extend through the raised portion 110 of the base plate 36, although other embodiments are provided for here. The check valve 58 is illustratively annular and includes a generally horizontal segment 90 extending from an end point 71 and an angled segment 92 extending from the generally horizontal segment 90 and arranged at an angle to the generally horizontal segment 90, thereby forming a fold 94. In an illustrative embodiment, the generally horizontal segment 90 extends from the end point 71 and the angled segment 92 extends at an angle to a horizontal plane so that a free end 96 of the angled segment 92 is angled outwardly and downwards from the generally horizontal segment 90. The free end 96 is configured to rest on the upper side 62 of the base plate 36 in its natural state. The free end 96 of the angled segment 92 can be bulbous or semi-bulky to raise the angled segment 92 and provide a gap between an elastomeric surface of the angled segment 92 and the base plate 36 to distribute pressure evenly through the check valve 58. the free end 96 can be of any shape. In various embodiments, the check valve 58 is annularly arranged around the longitudinal axis 82 when positioned within the filter assembly 20. Still in several embodiments, the inlet openings 66 of the base plate 36 can be positioned below the angled segment
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13/58 of check valve 58 when mounted on filter assembly 20, and inlet openings 66 can direct fluid flow against angled segment 92 when directing fluid to filter assembly 20. In certain embodiments, the raised portion 110 the base plate 36 can be aligned under a portion of the check valve 58, such as the horizontal segment 90, and includes the inlet openings 66 that direct fluid flow towards the angled segment 92. The check valve includes an opening central which can be substantially aligned with the outlet opening 80 of the base plate 36 and the longitudinal axis 82 of the filter assembly 20.
[0040] Check valve 58 can be made of rubber, plastic, an elastomeric material or any other suitable material. Check valve 58 can be made of Nitrile, Silicone rubber or any other suitable material. In various embodiments, the materials for check valve 58 must be suitable for use with engine oil up to 148.89 ^Q C (300 degrees Fahrenheit) for several thousand miles. As understood by the review of FIGS. 4A-6B, check valve 58 and at least some of its components such as angled segment 92 and horizontal segment 90 are configured to be deformable or elastic so that a certain pressure of fluid supporting check valve 58 may deform or moving such components relative to the rest of the components of the filter assembly 20. For example, FIGS. 4A-4B illustratively show the check valve 58 in a natural state with no pressure applied to it, FIGS. 5A-5B illustratively show the check valve 58 in a first state where pressure from a fluid is applied to the angled segment 92 (through fluid entering from the openings 66) to force the angled segment 92 upward so that a gap or space extends between the free end 96 and the base plate 36 and FIGS. 6A-6B illustratively show the valve
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Check 14/58 in a second state where pressure of a fluid is applied to a portion of the horizontal segment 90 to force a portion of the horizontal segment 90 upward against a polarizing force so that fluid can pass between the horizontal segment 90 and the relief valve seat assembly 56, described below. In various embodiments, certain parts of the check valve 58 may be deformable independently of other parts of the check valve 58. In other embodiments, certain fluid pressures may deform various parts of the check valve differently or the parts of the check valve may deform evenly at a certain pressure.
[0041] As illustrated in FIGS. 4A-6B, the relief valve seat assembly 56 of the fluid flow control assembly 54 is configured to work in conjunction with the check valve 58 to direct flow flowing into opening 66 of the base plate 36 to be directed for outlet opening 80 without flowing through filter element 28. For example, relief valve seat assembly 56 and check valve allow fluid to bypass filter element 28 within filter assembly 20 when pressure of the fluid flowing into the filter assembly 20 is at or above a certain level (for example, when the fluid pressure is high because the filter element 28 is excessively clogged, causing fluid flowing through the filter assembly 20 to be at a higher pressure).
[0042] In illustrative embodiments, the relief valve seat assembly 56 includes a valve seat 60, a biased member 64 and a washer 68. As illustrated in FIGS. 4A-6B, the relief valve seat assembly 56 can also be annular to the longitudinal axis 82 of the filter assembly 20 when mounted within the filter assembly 20, similar to check valve 58. Specifically, the valve seat 60 can have a longitudinal axis A which is generally configured
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15/58 to be aligned with the longitudinal axis 82 of the filter assembly 20 when the valve seat 60 is attached there. The valve seat 60, biased member 64 and washer 68 are configured to be retained at the lower end 24 of the housing 22, and can further be configured to support the raised portion 110 of the base plate 36 when secured within the housing 22. Assembly relief valve seat 56 can at least partially extend into the opening 31 formed by the core 30 of the filter element 28. As described more fully, valve seat 60 provides a seat for a check valve portion 58 supports and further retains the bias member 64 against the check valve 58 to tend the check valve 58 to be seated against a portion of the valve seat 60. The bias member 64 is configured to move upwards in the direction of the longitudinal axis 82 inside the filter assembly 20 (for example, inside the valve seat 60). The relief valve seat assembly 56 cooperates with the check valve 58 to allow fluid bypass of the filter element 28 when exiting outlet opening 80. Illustratively, a portion of the relief valve seat assembly 56 may extend through the center opening of the check valve 58, with an outer surface of the relief valve seat assembly 56 supporting the end 71 of the horizontal segment 90 of the check valve 58.
[0043] As illustrated, for example, in FIGS. 1-2 and 7, valve seat 60 illustratively includes a seat portion 70 and a centering portion 72 coupled together in a connector portion 73. Both seat portion 70 and centering portion 72 can be annular in nature for the longitudinal axis 82 when the valve seat 60 is incorporated into the filter assembly 20. The seat portion 70 can generally be horizontal in direction (i.e., perpendicular to the longitudinal axis 82) and the centering portion 72 can
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16/58 is generally vertical in direction (that is, parallel to the longitudinal axis 82). In various embodiments, the seat portion 70 and the centering portion 72 can be formed as a unitary component that is formed from the same material. In various embodiments, the seat and centering portions 70 and 72 can be made of rubber, plastic, an elastomeric material or any other suitable material. For example, the seat and centering portions 70 to 72 can be formed of nylon or a silicone-based material or of the silicone type, although other materials are also provided for here. In illustrative embodiments, one or more components of the valve seat 60 may be formed of nylon, such as Nylon6, Nylon6 / 6 or Nylon12. Any material that can be injection molded or extruded and can withstand the environment of an oil filter can be used. In illustrative embodiments, valve seat 60 may have a diameter D1 that is approximately 43.18 m (1,700 inches), although other diameters are provided here.
[0044] In various embodiments, the seat portion 70 of the valve seat 60 includes a base plate sealing ring 74, a cartridge sealing ring 76 and a check valve sealing ring 78, as illustrated in FIGS. . 1 -2. The sealing ring of the check valve 78 can be adjacent and connected to the connector portion 73 that connects the seat portion 70 to the centering portion 72 and extends annularly outwardly from the centering portion 72. Specifically, the sealing ring of the check valve 78 can extend along a plane P1 which is generally perpendicular to the longitudinal axis A of the relief valve seat assembly 56, as illustrated in FIG. 7. As illustrated in FIGS. 4A-5B, check valve sealing ring 78 is configured to provide a sealing surface for check valve 58 to seat against when valve seat 60 is aligned within the center opening
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17/58 of the check valve 58 along the longitudinal axis 82 of the filter assembly 20. Illustratively, a lower surface 59 of the check valve 58 is configured to support an upper surface 79 of the check valve sealing ring 78 to seal the check valve 58 on the valve seat 60 to prevent fluid flow from it. Such sealing can occur at or near end point 71 of check valve 58, although other locations are provided here. In illustrative embodiments, the sealing portion 70 can have a thickness (between the upper surface 79 and the lower surface 81) that can be between 0.4064 cm and 0.5334 cm (0.160 inch and 0.210 inch) although other thicknesses are provided on here.
[0045] In illustrative embodiments, the sealing ring of the base plate 74 is configured to extend annularly out of and below the check valve sealing ring 78 and be coupled thereto, as shown in FIG. 7. A connecting wall 84 can extend downwardly from an outer edge 77 of the check valve sealing ring 78 to connect the base plate sealing ring 74 to the check valve sealing ring 78. For For example, the connecting wall 84 can terminate at a lower edge 85 of the connecting wall 84, and the sealing ring of the base plate 74 can extend outwardly from the lower edge 85 in a direction that is horizontal to the connecting wall. 84 and longitudinal axis A of the relief valve seat assembly 56. The base plate sealing ring 74 can extend along a plane P2 that is substantially parallel to the check valve sealing ring 78 and plane P1, and the sealing ring of the base plate 74 can extend below the sealing ring of the check valve 78, as illustrated in FIG. 7 to create a horizontal gap between the sealing rings 74 and 78. In this way, the planes P1 and P2 can be spaced from each other. The base plate sealing ring 74 includes a
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18/58 lower surface 81 and upper surface 83 and ends at an end point 87 which is opposite the lower edge 85 of the connecting wall 84.
[0046] In illustrative embodiments, the cartridge sealing ring 76 is configured to extend outwardly from the check valve sealing ring 78, and can further extend outwardly from the base plate sealing ring 74. In certain embodiments, the cartridge seal ring 76 is generally aligned with the plane P1 of the check valve seal ring 78, but is annularly spaced from the check valve seal ring 78 by a first gap G1 which can allow fluid flows between the check valve sealing ring 78 and the cartridge sealing ring 76, as illustrated in FIG. 7. The first G1 gap may have a W1 width measurement of approximately 0.125 inch or 3.2 mm, although other measurements are not provided here. The cartridge sealing ring 76 can be coupled to the check valve sealing ring 78 by one or more connecting bridges 88 that extend outwardly from the check valve sealing ring 78 to retain the sealing ring from cartridge 76 to the rest of valve seat 60. In various embodiments, connection bridges 88 can be equally spaced around the circumference of the check valve sealing ring 78, although other arrangements are provided for here. The cartridge sealing ring 76 can be configured to align longitudinally with a portion of the end cap 50 of the filter element when the valve seat 60 is positioned within the housing 22 of the filter assembly 20. In various embodiments, the sealing ring cartridge seal 76 provides a supporting relationship between valve seat 60 and end cap 50 in order to secure components relative to each other within filter assembly 20.
[0047] In various embodiments, an upper surface 89 of the ring
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19/58 of cartridge seal 76 is horizontally aligned with the upper surface 79 of the check valve seal ring 78. In this way, the check valve seal ring 78 and cartridge seal ring 76 are generally parallel to one another. the other and provide two parallel surfaces 79 and 89 on which the lower surface 59 of the check valve 58 can support to seal the check valve 58 to the valve seat 60 to prevent fluid flow through the gap G1. The cartridge sealing ring 76 ends at an end point 86. In illustrative embodiments, the end point 86 can be complementarily shaped to be received in the fold 94 of the check valve 58 when the check valve 58 is sealed with it. For example, endpoint 86 can be rounded in shape, although other shapes and shapes are provided here.
[0048] As illustrated in FIGS. 1-7, the cartridge sealing ring 76 is longitudinally spaced from the base plate sealing ring 74 to form a second gap G2 between them. The second gap G2 can have a width measurement of W2 between approximately 1.54 and 3.81 mm (0.060 and 0.150 inch), although other measurements are provided for here. The second gap G2 is an opening below the check valve 58 through which fluid flowing into the openings 66 of the base plate 36 can flow after entering the filter assembly 20. The second gap G2 is connected to the first gap G1 so that a flow passage P extends between the spans G1 and G2 through which fluid can flow. In illustrative embodiments, the second gap G2 is upstream of the angled portion 92 of the check valve 58, as illustrated in FIGS. 4A-6B. In this way, when fluid is flowing through passage P and exits into gap G1, the fluid takes a bypass course B that bypasses filter element 28. In addition, such fluid will enter the second gap G2 before subjecting the angled portion 92 of the check valve 58 to pressure from the fluid, reducing unnecessary wear and tear
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20/58 on the check valve 58.
[0049] In illustrative embodiments, the centering portion 72 of the valve seat 60 includes one or more annular walls 42 that extend upwardly from the connector portion 73 and are annular to the longitudinal axis A of the valve seat 60. The walls annulars 42 can be illustratively substantially perpendicular to the seat portion 70, but other embodiments are provided for here. As illustrated, for example, in FIG. 7, the annular walls 42 can be slightly angled with respect to the longitudinal axis A to form an angle that is less than 90 degrees to the seat portion 70. The annular walls 42 include an outer surface 41 from which the connector portion 73 extends to connect the seat portion 70. In various embodiments, the annular walls 42 of the centering portion 72 extend through the central opening of the check valve 58, and the outer surface 41 of the annular walls 42 can support at the end point 71 of the horizontal segment 90 of the check valve 58. In illustrative embodiments, the annular walls 42 can have a length that can be between 12.7 to 25.4 mm (0.500 inches and 1,000 inches), although other lengths are provided here.
[0050] A drain opening 100 extends along the longitudinal axis A of the valve seat 60. The drain opening 100 extends within the circumference of the annular walls 42 of the centering portion 72 and extends further through the seat portion 70 to provide a flow path for fluid flowing to the outlet opening 80 of the filter assembly 20. In this way, fluid that has been filtered through the filter element 28 and flows to the opening 31, or fluid that has bypassed the filter element 28 through the check valve 58 and relief valve seat assembly 56, is directed to pass through the outlet opening 100 of the valve seat 60 to the outlet opening 80.
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21/58
[0051] The annular walls 42 of the valve seat 60 are spaced to form one or more bypass openings 102. The bypass openings 102 are configured to allow fluid to flow into the flow opening 100 from the gap G1. In various embodiments, and as illustrated in FIGS. 1 and 2, bypass openings 102 can be equally spaced around the circumference of valve seat 60. In illustrative embodiments, bypass openings 102 can be positioned to be at least partially longitudinally aligned above one or more spans G1 between the check valve sealing ring 78 and the cartridge sealing ring 76 of the seat portion 70 of the valve seat 60. In various embodiments, bypass openings 102 extend into the connector portion 73 between the seat portions and centering 70 and 72 of the relief valve and can further extend to a portion of the check valve sealing ring 78, as illustrated in FIG. 1. In such a configuration, fluid flowing through the gap G1 between the check valve sealing ring 78 and the cartridge sealing ring 76 can flow substantially horizontally to the bypass openings 102 when the check valve 58 is not sealed against the check valve sealing ring 78.
[0052] The centering portion 72 further includes one or more protruding protruding lugs 44 which are coupled to an upper end of the annular walls 42. The latches 44 can be dimensioned and molded in various embodiments. In an illustrative embodiment, the latches 44 are configured to extend annularly outwardly from the outer surface 41 of the annular walls 42 and include a stop surface 43 that is substantially perpendicular to the outer surface 41 of the annular walls 42, as illustrated in FIG . 7. In certain configurations, the stop surface 43 of the lock 44, the outer surface 41 of the annular walls 42 and the upper surface 79 of the seal ring
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22/58 of the check valve 78 form a check gap 47 between them. Retention gap 47 can retain biased member 64, as described here. In illustrative embodiments, the latches 44 can have a length that can be between 3.175 mm and 5.08 mm (0.125 inches and 0.200 inches), although other lengths are provided here. [0053] In illustrative embodiments, the valve seat 60 of the relief valve seat assembly 56 can be composed of two or more separate structures that form the components of the valve seat 60. The valve seat 60 components can be separated in various ways, which will now be described here, and brought together to form the valve seat (for example, before or during the manufacture or assembly of the filter assembly 20). Specifically, alternative embodiments of a 260/360/460 two-piece valve seat that can be incorporated into the relief valve seat assembly 56 will be described here; however, similar reference numerals will be used to identify and describe similar structures as described above with respect to valve seat 60. Separation of two-piece valve seat structures 260 can provide manufacturing efficiencies and cost savings for seat production valve, for example, compared to a unitary relief valve seat structure. Although two-piece relief valve seat components are described here, such components can be further separated into a larger number of parts and considered within the scope of the present description.
[0054] An alternative first two-piece valve seat 260 for incorporation into the relief valve seat assembly 56 is illustrated in FIGS. 10-12. As illustrated, the two-piece valve seat 260 illustratively includes a seat portion 270 and a separate centering portion 272 that can be coupled to the seat portion 270 through, for example, a retainer with
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Pressure. Alternatively, the seat portion 270 can be retained on the centering portion 272 by resting on an annular lower rim 274, described below, which extends radially outwardly from the centering portion 272.
[0055] Both the seat portion 270 and the centering portion 272 can be annular in nature to the longitudinal axis 82 when the two-piece valve seat 260 is incorporated into the filter assembly 20. The seat portion 270 can generally be horizontal in direction (i.e., perpendicular to longitudinal axis 82) and the centering portion 272 can be aligned to be generally vertical in direction (i.e., parallel to longitudinal axis 82). In various embodiments, the seat and centering portions 270 and 272 can be made of rubber, plastic, an elastomeric material or any other suitable material. For example, the seat and centering portions 270 and 272 can be formed of nylon or a silicone-based or silicone-like material, although other materials are also provided for here. In illustrative embodiments, one or more components of the two-piece valve seat 260 may be formed of nylon, such as Nylon6, Nylon6/6 or Nylon12. Any material that can be injection molded or extruded and can withstand the environment of an oil filter can be used.
[0056] In various embodiments, the seat portion 270 of the two-piece valve seat 260 includes a cartridge seal ring 276, a check valve seal ring 278 and one or more connecting bridges 288 extending between the cartridge sealing ring 276 and check valve sealing ring 278, as illustrated in FIGS. 10-12. Sealing portion 270 includes an upper surface 262, a lower surface 264, an inner surface 266 and an outer surface 268. A portion of the check valve sealing ring 278 defines the inner surface 266, with the inner surface
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266 forming the inner periphery of the seat portion 270. A portion of the cartridge seal ring 276 defines the outer surface 268, with the outer surface 268 forming the outer periphery of the seat portion 270. In various embodiments, the inner surface 266 is configured to be positioned adjacent to a portion of the centering portion 272 when the seat portion 270 is assembled with the centering portion 272.
[0057] In illustrative embodiments, the check valve sealing ring 278 may extend along a plane that is generally perpendicular to the longitudinal axis A of the relief valve seat assembly 56. As understood from the description above, the check valve sealing ring 278 is configured to provide a sealing surface for the check valve 58 to seat against when the two-piece valve seat 260 is aligned within the central opening of the check valve 58 along the longitudinal axis 82 of the filter assembly 20. Illustratively, a lower surface 59 of the check valve 58 is configured to support an upper surface 279 of the check valve sealing ring 278 to seal the check valve 58 to the two-piece valve seat 260 to prevent fluid from flowing through them. Such sealing can occur at or near end point 71 of check valve 58, although other locations are provided here.
[0058] In illustrative embodiments, the cartridge seal ring 276 is configured to extend annularly out of the check valve seal ring 278. In certain embodiments, the cartridge seal ring 276 is generally aligned with the plane of the check valve. check valve sealing ring 278, but it is annularly spaced from the check valve sealing ring 278 by a first gap G1 that can allow fluid to flow between the check valve sealing ring 278 and the cartridge sealing ring 276 , as illustrated in
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FIG. 10. As noted, cartridge seal ring 276 can be coupled to check valve seal ring 278 by one or more connecting bridges 288 that extend outward from check valve seal ring 278 to retain the cartridge sealing ring 276 to the check valve sealing ring 278. In various embodiments, the connection bridges 288 can be equally spaced around the circumference of the sealing ring of the checking valve 278, although other arrangements are provided for here . Illustratively, there may be 8 equally spaced connection bridges 288 in the two-piece valve seat 260.
[0059] In various embodiments, an upper surface 289 of the cartridge seal ring 276 is horizontally aligned with the upper surface 279 of the check valve seal ring 278. In this way, the check valve seal ring 278 and the cartridge sealing rings 276 are generally parallel to each other and provide two parallel surfaces 279 and 289 on which the bottom surface 59 of the check valve 58 can support to seal the check valve 58 to the two-piece valve seat 260 for prevent fluid from flowing through the G1 gap. The cartridge sealing ring 276 ends at an end point 286. In illustrative embodiments, the end point 286 can be complementarily shaped to receive the fold 94 of the check valve 58 when the check valve 58 is sealed with it. For example, the end point 286 can be rounded in shape, although other shapes and shapes are provided here.
[0060] As illustrated in FIGS. 10-12, the cartridge sealing ring 276 of the sealing portion 270 is longitudinally spaced from the sealing ring of the base plate 274 of the centering portion 272 to form a second gap G2 between them. The second gap G2 is an opening below the check valve 58 through which fluid flowing into the openings 66 of the base plate 36 can flow after entering the
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26/58 filter assembly 20. The second gap G2 is connected to the first gap G1 so that a flow passage P extends between the spans G1 and G2 through which fluid to flow. In illustrative embodiments, the second gap G2 is upstream of the angled portion 92 of check valve 58. In this way, when fluid is flowing through passage P and exits gap G1, the fluid goes through a bypass course B that diverts from filter element 28. In addition, such fluid will enter the second gap G2 before subjecting the angled portion 92 of the check valve 58 to pressure from the fluid, reducing unnecessary wear and tear on the check valve 58.
[0061] In illustrative embodiments, the centering portion 272 of the two-piece valve seat 260 includes an annular lower lip 274 which functions as a base plate sealing ring. The base plate sealing ring 274 is configured to extend annularly out of and below the seat portion 270, and in particular out and under the sealing ring of the check valve 278, as illustrated in FIG. 10. The base plate sealing ring 274 can extend outwardly from an outer surface 241 of the centering portion 272 at a point 273 and be configured to extend in a substantially perpendicular direction from the alignment of the centering portion. centering 272 and longitudinal axis A of relief valve seat assembly 56. The base plate seal ring 274 can extend along a second plane that is substantially parallel to the plane of the check valve seal ring 278 , but the base plate sealing ring 274 can extend below the check valve sealing ring 278 to create a horizontal gap between the base plate sealing ring 74 and the check valve sealing ring 278 The base plate sealing ring 274 includes a lower surface 281 and an upper surface 283 and ends at an end point 287 that is opposite the point
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273 from where the baseplate seal ring 274 extends from the outer surface 241 of the centering portion 272. In various embodiments, the cartridge seal ring 276 can extend more annularly out of the seal ring base plate
274 when the centering portion 272 is coupled to the seat portion 270.
[0062] In illustrative embodiments, the centering portion 272 of the two-piece valve seat 260 further includes one or more annular walls 242 that extend upwardly from the base plate seal ring 274 and are annular to the longitudinal axis That of the two-piece valve seat 260. The annular walls 242 can be illustratively substantially perpendicular to the base plate seal ring 274, but other embodiments are provided for here. In an illustrative embodiment, the annular walls 242 may include one or more ribs 205 that provide structural support for the centering portion 272 during fabrication and / or assembly within the filter assembly 20.
[0063] As illustrated, for example, in FIGS. 10 and 12, at least a portion of the annular walls 242 can be slightly angled with respect to the longitudinal axis A to form an angle that is less than 90 degrees to the base plate seal ring 274 in order, for example, to provide support or structural assistance for positioning the centering portion 272 within the filter assembly 20. The annular walls 242 include the outer surface 241 from which the baseplate seal ring 274 extends. In various embodiments, the annular walls 242 of the centering portion 272 extend through the central opening of the check valve 58, and the outer surface 241 of the annular walls 242 can support at the end point 71 of the horizontal segment 90 of the check valve 58. In illustrative embodiments, the annular walls 242 can be of a length that
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28/58 can be between 12.7 mm and 25.4 mm (0.500 inch and 1,000 inches), although other lengths are provided here.
[0064] A flow opening 200 extends along the longitudinal axis A of the two-piece valve seat 260. The flow opening 200 extends within the circumference of the annular walls 242 of the centering portion 272 to provide a flow path. for fluid flowing to outlet opening 80 of filter assembly 20. In this way, fluid that has been filtered through filter element 28 and flows into aperture 31, or fluid that has bypassed filter element 28 through check valve 58 and relief valve seat assembly 56, is directed to pass through the flow opening 200 of the two-piece valve seat 260 to the outlet opening 80.
[0065] The annular walls 242 of the two-piece valve seat 260 are spaced to form one or more bypass openings 202. The bypass openings 202 are configured to allow fluid to flow into the flow opening 200 from the G1 gap . In various embodiments, and as illustrated in FIGS. 10-12, bypass openings 202 can be spaced equally around the circumference of the two-piece valve seat 60. In illustrative embodiments, bypass openings 202 can be positioned to be at least partially longitudinally aligned above one or more spans G1 between the check valve sealing ring 278 and the cartridge sealing ring 276 of the seat portion 270 of the two-piece valve seat 260. In various embodiments, bypass openings 202 extend to the connector portion 273 for the base plate sealing ring 274, as shown in FIG. 12. In such a configuration, fluid flowing through the gap G1 between the check valve sealing ring 278 and the cartridge sealing ring 276 can flow substantially horizontally into the bypass openings.
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202 when check valve 58 is not sealed against check valve sealing ring 278.
[0066] The centering portion 272 further includes one or more protruding protruding lugs 244 which are coupled to an upper end of the annular walls 242. The latches 244 can be dimensioned and molded in various embodiments. In an illustrative embodiment, the latches 244 are configured to extend annularly outwardly from the outer surface 241 of the annular walls 242 and include an upper surface 243 that is substantially perpendicular to the outer surface 241 of the annular walls 242, as illustrated in FIG. 12. In certain configurations, the stop surface 243 of the lock 244, the outer surface 241 of the annular walls 242 and the upper surface 279 of the sealing ring of the check valve 278 form a retaining gap 247 between them. Retention gap 247 can retain biased member 64, as described here. In illustrative embodiments, the latches 244 can have a length that can be between 3.175 mm and 5.08 mm (0.125 inch and 0.200 inch), although other lengths are provided here.
[0067] In illustrative embodiments, connection bridges 288 of seat portion 270 are configured to extend below cartridge seal ring 276 and check valve seal ring 278 along longitudinal axis 82. In this way, connection bridges 288 define the lower surface 264 of the seat portion 270. In illustrative embodiments, the lower surface 264 is configured to support or rest on the upper surface 283 of the base plate sealing ring 274 when the sealing portion 270 is coupled to the centering portion 272 to form the two-piece valve seat 260. Similarly, the inner surface 266 of the seat portion 270 can be configured to rest on the outer surface 241 of the centering portion 272 when the seat portion 270 is coupled
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30/58 with the centering portion 272.
[0068] As noted, the two-piece valve seat 260 can be mounted using a pressure-lock method, in which one or more of the components are pressed together to be retained within the relief valve seat assembly 56. Similarly, the components of the relief valve seat assembly 56, and the fluid flow control assembly 54, can be pressed together to be held together. In this way, the present invention comprises a fluid flow control assembly 54 that does not require any stitching, welding, melting or applied glue to be assembled. Assembly can take place prior to installing the fluid flow control assembly 54 within housing 22.
[0069] A second alternative two-piece valve seat 360 for incorporation into the relief valve seat assembly 56 is illustrated in FIGS. 13-15. As illustrated, the two-piece valve seat 360 illustratively includes a 370 cartridge seat portion and a valve centering-and-sealing 372 portion that can be coupled to the 370 cartridge seat portion by, for example. , a pressure retention. Alternatively, the cartridge seat portion 370 can be retained over the valve centering-and-sealing portion 372 by resting on an annular lower lip 374, described below, which extends radially outwardly from the valve centering-and-sealing 372.
[0070] Both the 370 cartridge seat portion and the valve centering-and-sealing portion 372 can be annular in nature for the longitudinal axis 82 when the two-piece valve seat 360 is incorporated into the filter assembly 20. The cartridge seat portion 370 can be generally horizontal in direction (that is, perpendicular to the longitudinal axis 82) and the valve centering-and-sealing portion 372 can be aligned to be generally vertical in
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31/58 direction (that is, parallel to the longitudinal axis 82). In various embodiments, the two portions 370 and 372 can be made of rubber, plastic, an elastomeric material or any other suitable material. For example, portions 370 and 372 can be formed of nylon or a silicone-based or silicone-like material, although other materials are also provided herein. In illustrative embodiments, one or more components of the two-piece valve seat 360 may be formed of nylon, such as Nylon6, Nylon 6/6 or Nylon12. Any material that can be injection molded or extruded and can withstand the environment of an oil filter can be used.
[0071] In various embodiments, the cartridge seat portion 370 of the two-piece valve seat 360 includes a cartridge seal ring 376 and one or more connecting bridges 388 extending radially inward from the seal ring of cartridge 376, as illustrated in FIGS. 13-15. The cartridge seat portion 370 includes an upper surface 362, a lower surface 364, an inner surface 366 and an outer surface 368. The one or more connecting bridges 388 each include an inner surface 365 that defines the inner surface 366 of the cartridge seat portion 370. An end point 386 of the cartridge seal ring 376 defines the outer surface 368, with the outer surface 368 forming the outer periphery of the cartridge seat portion 370. In various embodiments, the inner surface 366 is configured to be positioned adjacent to a portion of the valve centering-and-sealing portion 372 when the cartridge seat portion 370 is assembled with the valve-centering-and-sealing portion 372, as described below.
[0072] In illustrative embodiments, the valve centering-and-sealing portion 372 of the two-piece valve seat 360 includes an annular lower lip 374 and a check valve sealing ring 378, as illustrated in FIG. 15. The lower annular rim 374
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32/58 functions as a base plate seal ring 374. Base plate seal ring 374 is configured to extend outwardly from and below a 370 cartridge seat portion portion when assembled together, as illustrated in FIG. 13. The base plate seal ring 374 can extend outwardly from an outer surface 341 of the centering-and-valve-seal portion 372 at an end point 373 of the outer surface 341 and be configured to extend in a substantially perpendicular direction from the alignment of the valve centering-and-valve portion 372 and the longitudinal axis A of the relief valve seat assembly 56. The base plate seal ring 374 includes a surface bottom 381 and an upper surface 383 and ends at an end point 387 that is opposite point 373 from where the base plate seal ring 374 extends from the outer surface 341 of the centering-and-de-centering portion valve seal 372.
[0073] As illustrated in FIG. 15, check valve seal ring 378 of valve centering-and-seal-portion 372 is positioned adjacent to and above base plate seal ring 374. Check valve seal ring it also extends radially outwardly from the outer surface 341 of the valve centering-and-sealing portion 372. Check valve sealing ring 378 includes an upper surface 379 that extends in a plane that is one direction substantially perpendicular from the outer surface 341. The check valve seal ring 378 further includes an outer circumference surface 308 that extends substantially parallel to the outer surface 341. The base plate seal ring 374 extends further in one radial direction away from the longitudinal axis 82 than the check valve seal ring 378, as illustrated. The length or width of the upper surface 379 and the outer circumference surface 380
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33/58 may vary within the scope of the description. An embodiment illustrating the length of the upper surface 379 can be anywhere between 1.27 mm and 2.54 mm (0.05 and 0.10 inch).
[0074] In illustrative embodiments, the cartridge seal ring 376 of the cartridge seat portion 370 is configured to extend annularly out of the check valve seal ring 378 of the centering-and-valve-sealing portion 372 when assembled together. In certain embodiments, the upper surface 362 of the cartridge seal ring 376 is generally aligned along the plane of the upper surface 379 of the check valve seal ring 378 when assembled together. However, when the cartridge seat portion 370 is coupled to the centering-and-sealing-valve portion 372, the cartridge sealing ring 376 is annularly spaced from the check valve sealing ring 378 by a first gap G1 that can allow fluid to flow between the check valve seal ring 378 and the cartridge seal ring 376, as illustrated in FIG. 13. In this way, when joined together, the outer circumference surface 380 of the check valve sealing ring 378 of the centering-and-valve-sealing portion 372 can support the inner surface 365 of one or more connection bridges 388 extending inwardly from cartridge seal ring 376. In various embodiments, connection bridges 388 may be equally spaced around the circumference of cartridge seat portion 370, although other arrangements are provided here. Illustratively, there can be eight equally spaced connection bridges 388 on the two-piece valve seat 360.
[0075] As noted, in various embodiments, an upper surface 362 of the cartridge sealing ring 376 is horizontally aligned with the upper surface 379 of the sealing ring of the check valve 378 when the cartridge seat portion 370 is coupled with
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34/58 the valve centering-and-sealing portion 372. In this way, the check valve sealing ring 378 and the cartridge sealing ring 376 are generally parallel to each other and provide two parallel surfaces 379 and 362 on which the bottom surface 59 of the check valve 58 can support to seal the check valve 58 to the two-piece valve seat 360 to prevent flow from flowing through the gap G1. The cartridge sealing ring 376 ends at an end point 386. In illustrative embodiments, the end point 386 can be complementarily shaped to be received in the fold 94 of the check valve 58 when the check valve 58 is sealed with it. For example, the endpoint 386 can be rounded, although other shapes and shapes are provided here.
[0076] As illustrated in FIGS. 13-15, the cartridge seal ring 376 of the cartridge seat portion 370 is configured to be longitudinally spaced from the base plate seal ring 374 to form a second G2 gap between them when the cartridge seat portion 370 is coupled with the valve centering-and-sealing portion 372. The second gap G2 is an opening below the check valve 58 through which fluid flowing into the openings 66 of the base plate 36 can flow after entering the filter assembly 20 The second gap G2 is connected to the first gap G1 so that a flow passage P extends between the spans G1 and G2 through which fluid can flow. In illustrative embodiments, the second gap G2 is upstream of the angled portion 92 of check valve 58. In this way, when fluid is flowing through passage P and exits gap G1, the fluid takes a bypass course B that deflects from the element filter 28. In addition, such fluid will enter the second gap G2 before subjecting the angled portion 92 of the check valve 58 to pressure from the fluid, reducing unnecessary wear and tear on the check valve 58.
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[0077] In various embodiments, the cartridge seal ring 376 may extend more annularly out of the base plate seal ring 374 when the centering-and-valve-seal portion 372 is coupled to the seat portion 370. The base plate seal ring 374 can extend along a second plane that is substantially parallel to the plane of the check valve seal ring 378 and cartridge seal ring 376, but the seal ring base plate 374 can extend below check valve seal ring 378 and cartridge seal ring 376 to create a horizontal gap between base plate seal ring 74 and check valve seal ring 378 .
[0078] In illustrative embodiments, the valve centering-and-sealing portion 372 of the two-piece valve seat 360 further includes one or more annular walls 342 extending upwardly from the pressure plate seal ring. base 374 and are annular to the longitudinal axis A of the two-piece valve seat 360. The annular walls 342 can be illustratively substantially perpendicular to the base plate sealing ring 374, but other arrangements are provided for here. The annular walls 342 can define the outer surface 341 from which the sealing ring of the base plate 374 and the sealing ring of the check valve 378 extend.
[0079] As illustrated, for example, in FIGS. 13 and 15, at least a portion of the annular walls 342 can be slightly angled with respect to the longitudinal axis A to form an angle that is less than 90 degrees to the sealing ring of the base plate 374 in order, for example, to provide structural support or assistance for positioning the valve centering-and-sealing portion 372 within the filter assembly 20. In various embodiments, the annular walls 342 of the valve centering-and-sealing portion 372 extend through the central opening of check valve 58, and the surface
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36/58 external 341 of the annular walls 342 can rest on the end point 71 of the horizontal segment 90 of the check valve 58. In illustrative embodiments, the annular walls 342 can have a length that can be between 12.7 mm and 25.4 mm (0.500 inch and 1,000 inch), although other lengths are provided here.
[0080] A drain opening 300 extends along the longitudinal axis A of the two-piece valve seat 360. The drain opening 300 extends within the circumference of the annular walls 342 of the centering-and-sealing-seal portion. valve 372 provides a flow path for fluid flowing to outlet opening 80 of filter assembly 20. In this way, fluid that has been filtered through filter element 28 and flows to opening 31, or fluid that has bypassed the filter element 28 through the check valve 58 and relief valve seat assembly 56, is directed to pass through the drain opening 300 of the two-piece valve seat 360 to the outlet opening 80.
[0081] The annular walls 342 of the two-piece valve seat 360 are spaced to form one or more bypass openings 302. The bypass openings 302 are configured to allow fluid to flow into the flow opening 300 from the G1 gap . In various embodiments, and as illustrated in FIGS. 13-15, bypass openings 302 can be equally spaced around the circumference of the two-piece valve seat 360. In illustrative embodiments, bypass openings 302 can be positioned to be at least partially longitudinally aligned above one or more gaps G1 between the check valve seal ring 378 and the cartridge seal ring 376 of the cartridge seat portion 370 of the two-piece valve seat 360. In such a configuration, fluid flowing through the gap G1 between the ring check valve sealing ring 37 and cartridge sealing ring 376 can flow substantially horizontally
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37/58 for bypass openings 302 when check valve 58 is not sealed against check valve sealing ring 378. In other illustrative embodiments, bypass openings 302 can be positioned adjacent to or above one or more 388 connection bridges on the 360 two-piece valve seat.
[0082] The centering-and-sealing portion of valve 372 further includes one or more protruding protruding lugs 344 which are coupled to an upper end of the annular walls 342. The latches 344 can be dimensioned and shaped in various ways. In an illustrative embodiment, the lugs 344 are configured to extend annularly outwardly from the outer surface 341 of the annular walls 342 and include a stop surface 343 which is substantially perpendicular to the outer surface 41 of the annular walls 342, as illustrated in FIG . 15. In certain configurations, the stop surface 343 of the lock 344, the outer surface 341 of the annular walls 342 and the upper surface 379 of the check valve sealing ring 378 form a retaining gap 347 between them. Retention gap 347 can retain biased member 64, as described here. In illustrative embodiments, locks 344 may have a length that can be between 3.175 mm and 7.62 mm (0.125 inches and 0.200 inches), although other lengths are provided here.
[0083] In illustrative embodiments, connection bridges 388 of cartridge seat portion 370 are configured to be positioned below cartridge seal ring 376 and check valve seal ring 378 along longitudinal axis 82. Bridges connection 388 can define the bottom surface 364 of the cartridge seat portion 370. In illustrative embodiments, the bottom surface 364 is configured to support or rest on the upper surface 383 of the base plate seal ring 374 when the seat portion 370 is coupled together with the valve centering-and-sealing portion 372 for
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38/58 form a two-piece valve seat 360. Similarly, the inner surface 366 of the cartridge seat portion 370 can be configured to rest on the outer circumference surface 380 of the check valve seal ring 378 when the check portion seat 370 is coupled together with the centering-and-sealing portion of valve 372.
[0084] As noted, the two-piece valve seat 360 can be mounted using a pressure-lock method, in which one or more of the components are pressed together to be retained within the relief valve seat assembly 56. Similarly, the components of the relief valve seat assembly 56, and the fluid flow control assembly 54, can be pressed together to be held together. In this way, the present invention comprises a fluid flow control assembly 54 that does not require any stitching, welding, melting or applied glue to be assembled. Assembly can take place prior to installing the fluid flow control assembly 54 within housing 22.
[0085] A third alternative two-piece valve seat 460 for incorporation into the relief valve seat assembly 56 is illustrated in FIGS. 16-18. As illustrated, the two-piece valve seat 460 illustratively includes a cartridge seat portion 470 and a valve centering-and-sealing portion 472 which can be coupled to the cartridge seat portion 470 via, for example , a pressure retention. Alternatively, the cartridge seat portion 470 can be retained on the valve centering-and-sealing portion 472 by resting on a portion of the valve-centering-and-sealing portion 472 described below.
[0086] Both the cartridge seat portion 470 and the valve centering-and-sealing portion 472 can be annular in nature for the longitudinal axis 82 when the valve seat of two
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39/58 parts 460 is incorporated into the filter assembly 20. The cartridge seat portion 470 can generally be horizontal in direction (that is, perpendicular to the longitudinal axis 82) and the valve centering-and-sealing portion 472 it can be aligned to be generally vertical in direction (i.e., parallel to longitudinal axis 82). In various embodiments, two portions 470 and 472 can be made of rubber, plastic, an elastomeric material or any other suitable material. For example, portions 470 and 472 may be formed of nylon or a silicone-based or silicone-like material, although other materials are also provided herein. In illustrative embodiments, one or more components of the two-piece valve seat 460 may be formed of nylon, such as Nylon6, Nylon 6/6 or Nylon12. Any material that can be injection molded or extruded and can withstand the environment of an oil filter can be used.
[0087] In various embodiments, the cartridge seat portion 470 of the two-piece valve seat 460 includes a cartridge seal ring 476, as illustrated in FIGS. 13-15. The cartridge seat portion 470 includes an upper surface 462, a lower surface 464, an inner surface 466 and an outer surface 468. The outer surface 468 extends to an end point 486, with the outer surface 468 forming the outer periphery of the cartridge seat portion 470. In various embodiments, the inner surface 466 is configured to be positioned adjacent to a portion of the valve centering-and-seal portion 472 when the cartridge seat portion 470 is assembled with the portion centering-and-sealing-valve valve 472, as described below.
[0088] In illustrative embodiments, the valve centering-and-sealing portion 472 of the two-piece valve seat 460 includes an annular lower lip 474, a check valve sealing ring 478 and one or more connection 488, as illustrated in
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FIG. 18. The annular lower lip 474 functions as a base plate seal ring 474. The base plate seal ring 474 is configured to extend outwardly from and below a cartridge seat portion portion 470 when assembled together, as shown in FIG. 16. The base plate seal ring 474 can extend outwardly from an outer surface 441 of the centering-and-valve-seal portion 472 at an end point 473 of the outer surface 441 and be configured to extend in a substantially perpendicular direction from the alignment of the valve centering-and-sealing portion 472 and the longitudinal axis A of the relief valve seat assembly 56. The base plate seal ring 474 includes a lower surface 481 and an upper surface 483 and ends at an end point 487 that is opposite point 473 from where the base plate seal ring 474 extends from the outer surface 441 of the centering-and- portion valve-seal-seal 472.
[0089] As illustrated in FIG. 18, the check valve seal ring 478 of the centering-and-valve-seal portion 472 is positioned adjacent to and above the base plate seal ring 474. The check valve seal ring it also extends radially outwardly from the outer surface 441 of the valve centering-and-sealing portion 472. The check valve sealing ring 478 includes an upper surface 479 that extends in a plane in a substantially perpendicular direction from the outer surface 441. The check valve seal ring 478 further includes an outer circumference surface 408 that extends substantially parallel to the outer surface 441. The base plate seal ring 474 extends further in a radial direction far from the longitudinal axis 82 than the check valve sealing ring 478, as shown. The length or width of the surface
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41/58 upper 479 and the outer circumference surface 480 may vary within the scope of the description. An embodiment illustrating the length of the upper surface 479 can be anywhere between 1.27 mm and 2.54 mm (0.05 and 0.10 inch).
[0090] The one or more connection bridges 488 of the valve centering-and-sealing portion 472 are configured to extend radially outwardly from the outer circumference surface 480 of the check valve sealing ring 478, as illustrated in FIG. 18. In various embodiments, connecting bridges 488 include at least an upper surface 490, an outer surface 491 and a lip 492. The lip 492 formed by a vertical surface 494 and a horizontal surface 496 that are substantially perpendicular to each other. As illustrated in FIG. 18, the shoulder 492 can be positioned adjacent the outer surface 491 of the connecting bridge 488, and can be formed to receive a portion of the cartridge seal ring 476 when the cartridge seat portion 470 is coupled to the centering portion -e valve-sealing 472. The shoulder 492 can therefore act as a seat to receive the cartridge seal ring 476 and facilitate proper alignment between the components of the two-piece valve seat 460. Consequently, when coupled together, the inner surface 466 of the cartridge sealing ring 476 can rest on the horizontal surface 496 and / or vertical surface 494 of the edges 492 of one or more connecting bridges 488 extending outwardly from the check valve sealing ring 478. The outer surface 491 of the connection bridges 488 can be positioned to be unitary with the end point 487 of the base plate seal ring 474. In various embodiments, the connection bridges 488 can be be equally spaced around the circumference of the cartridge sealing portion 470, although other arrangements are provided for here. Illustratively, there may be eight equally spaced 488 connecting bridges in the
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42/58 two-piece valve seat 460.
[0091] In illustrative embodiments, the cartridge seal ring 476 of the cartridge seat portion 470 is configured to extend annularly out of the check valve seal ring 478 of the centering-and-valve-sealing portion 472 when assembled together. In certain embodiments, the upper surface 462 of the cartridge seal ring 476 is generally aligned along the plane of the upper surface 479 of the check valve seal ring 478 when assembled together. However, when the cartridge seat portion 470 is coupled to the centering-and-sealing-valve portion 472, the cartridge sealing ring 476 is annularly spaced from the check valve sealing ring 478 by a first gap G1 that can allow fluid to flow between the check valve sealing ring 478 and the cartridge sealing ring 476, as striped in FIG. 16.
[0092] As noted, in various embodiments, an upper surface 462 of the cartridge sealing ring 476 is horizontally aligned with the upper surface 479 of the sealing ring of the check valve 478 when the cartridge seat portion 470 is coupled with the valve centering-and-sealing portion 472. In this way, check valve sealing ring 478 and cartridge sealing ring 476 are generally parallel to each other and provide two parallel surfaces 479 and 462 on which the bottom surface 59 of the check valve 58 can support to seal the check valve 58 to the two-piece valve seat 460 to prevent flow from flowing through the gap G1. The cartridge sealing ring 476 ends at an end point 486. In illustrative embodiments, the end point 486 can be complementarily shaped to be received in the fold 94 of the check valve 58 when the check valve 58 is sealed with it. For example, the end point 486 can be rounded,
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43/58 although other shapes and formats are provided for here.
[0093] As illustrated in FIGS. 16-18, the cartridge seal ring 476 of the cartridge seat portion 470 is configured to be longitudinally spaced from the base plate seal ring 474 to form a second gap G2 between them when the cartridge seat portion 470 is coupled with the valve centering-and-sealing portion 472. The second gap G2 is an opening below the check valve 58 through which fluid flowing into the openings 66 of the base plate 36 can flow after entering the filter assembly 20 The second gap G2 is connected to the first gap G1 so that a flow passage P extends between the spans G1 and G2 through which fluid can flow. In illustrative embodiments, the second gap G2 is upstream of the angled portion 92 of check valve 58. In this way, when fluid is flowing through passage P and exits gap G1, the fluid takes a bypass course B that deflects from the element of filter 28. In addition, such fluid will enter the second gap G2 before subjecting the angled portion 92 of the check valve 58 to pressure from the fluid, reducing unnecessary wear and tear on the check valve 58.
[0094] In several embodiments, the cartridge sealing ring 476 can extend more annularly out of the base plate sealing ring 474 when the centering-and-sealing-valve-portion 472 is coupled to the seat portion base plate 470. The base plate seal ring 474 can extend along a second plane that is substantially parallel to the plane of the check valve seal ring 478 and cartridge seal ring 476, but the seal ring base plate 474 can extend below the check valve seal ring 478 and cartridge seal ring 476 to create a horizontal gap between the base plate seal ring 74 and the check valve seal ring 478 .
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44/58
[0095] In illustrative embodiments, the valve centering-and-sealing portion 472 of the two-piece valve seat 460 further includes one or more annular walls 442 extending upwardly from the pressure plate sealing ring base 474 and are annular to the longitudinal axis A of the two-piece valve seat 460. The annular walls 442 can be illustratively substantially perpendicular to the base plate sealing ring 474, but other arrangements are provided for here. The annular walls 442 can define the outer surface 441 from which the base plate sealing ring 474 and the check valve sealing ring 478 extend.
[0096] As illustrated, for example, in FIGS. 16 and 18, at least a portion of the annular walls 442 can be slightly angled with respect to the longitudinal axis A to form an angle that is less than 90 degrees to the base plate sealing ring 474 in order, for example, to provide structural support or assistance for positioning the valve centering-and-sealing portion 472 within the filter assembly 20. In various embodiments, the annular walls 442 of the valve centering-and-sealing portion 472 extend through the central opening of the check valve 58, and the outer surface 441 of the annular walls 442 can support against the end point 71 of the horizontal segment 90 of the check valve 58. In illustrative embodiments, the annular walls 442 can be of a length that can be between 12.7 mm and 25.4 mm (0.500 inch and 1,000 inch), although other lengths are provided here.
[0097] A drain opening 400 extends along the longitudinal axis A of the two-piece valve seat 460. The drain opening 400 extends within the circumference of the annular walls 442 of the centering-and-sealing-seal portion. valve 472 to provide a flow path for fluid flowing to outlet opening 80 of filter assembly 20. In this way, fluid that has been filtered
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45/58 through the filter element 28 and flows into the opening 31, or fluid that has bypassed the filter element 28 through the check valve 58 and relief valve seat assembly 56, is directed to pass through the drain opening 400 from the two-piece valve seat 460 to outlet opening 80.
[0098] The annular walls 442 of the two-piece valve seat 460 are spaced to form one or more bypass openings 402. The bypass openings 402 are configured to allow fluid to flow into the flow opening 400 from the G1 gap . In various embodiments, and as illustrated in FIGS. 16-18, bypass openings 402 can be equally spaced around the circumference of the two-piece valve seat 460. In illustrative embodiments, bypass openings 402 can be positioned to be at least partially longitudinally aligned above one or more gaps G1 between the check valve sealing ring 478 and the cartridge sealing ring 476 of the cartridge seat portion 470 of the two-piece valve seat 460. In such a configuration, fluid flowing through the gap G1 between the ring check valve seals 478 and cartridge sealing ring 476 can flow substantially horizontally to bypass openings 402 when check valve 58 is not sealed against check valve sealing ring 478. In other illustrative embodiments, bypass openings 402 can be positioned adjacent to or above one or more connecting bridges 488 on the two-piece valve seat 460.
[0099] The centering-and-sealing portion of valve 472 further includes one or more protruding lugs 444 which are coupled to an upper end of annular walls 442. Locks 444 can be dimensioned and molded in various ways. In an illustrative embodiment, the locks 444 are configured to extend
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46/58 annularly outwardly from the outer surface 441 of the annular walls 442 and include a stop surface 443 which is substantially perpendicular to the outer surface 441 of the annular walls 442, as illustrated in FIG. 18. In certain configurations, the stop surface 443 of the lock 444, the outer surface 441 of the annular walls 442 and the upper surface 479 of the sealing ring of the check valve 478 form a retaining gap 447 between them. Retention gap 447 can retain biased member 64, as described here. In illustrative embodiments, locks 444 can have a length that can be between 3.175 mm and 10.16 mm (0.125 inches and 0.200 inches), although other lengths are provided here.
[0100] In illustrative modalities, the connection bridges 488 of the cartridge seat portion 470 are configured to be positioned below the cartridge seal ring 476 along the longitudinal axis 82. In illustrative modalities, the connection bridges 488 are configured to extend upwards from the upper surface 483 of the base plate sealing ring 474. In illustrative action modes, the upper surface 490 of the connecting bridges 488 can be aligned with or unitary with the upper surface 479 of the sealing ring check valve 478.
[0101] As noted, the two-piece valve seat 460 can be mounted using a pressure-lock method, in which one or more of the components are pressed together to be retained within the relief valve seat assembly 56. Similarly, the components of the relief valve seat assembly 56, and the fluid flow control assembly 54, can be pressed together to be held together. In this way, the present invention comprises a fluid flow control assembly 54 that does not require any stitching, welding, melting or applied glue to be assembled. Assembly can happen before installation of the assembly
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47/58 fluid flow control 54 within housing 22.
[0102] The remaining components of the fluid flow control assembly 54 will now be described by reference to a unitary valve seat 60 described above. However, such descriptions are also applicable to the 260/360/460 two-piece valve seats described above.
[0103] Bias member 64 of the relief valve seat assembly 56 is configured to tend the fluid flow control assembly 54 in a position that prevents flow from flowing through the bypass stroke B and to the flow opening 100 valve seat 60, thereby preventing fluid from drifting away from filter element 28 under normal operating conditions. Specifically, the biased member 64 is naturally inclined to engage with or put downstream pressure D on an upper surface 91 of the horizontal segment 90 of the check valve 58 to seal the check valve 58 over the check valve sealing ring. 78 and G1 gap. As further described in detail below, the end cap 50 of the filter element 28 is also configured to rest against the upper surface 91 of the horizontal segment 90 of the check valve 58 on the cartridge sealing ring 76. In this way, the gap G1 extending between the check valve sealing ring 78 and the cartridge sealing ring 76 is sealed by the check valve 58, preventing fluid flow through the G1 gap under normal conditions. Consequently, fluid pressure flowing in passage P under normal operations may not exceed the pressure D downstream of biased member 64. However, if the fluid pressure flowing into passage P of valve seat 60 exceeds a certain amount, the pressure of the fluid will overcome the pressure D downstream of the biased member, forcing the check valve 58 above the check valve sealing ring 78 to move upwards and causing the
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48/58 biased member 64 is pressed upward against the stop surface 43 of the latches 44, as illustrated in FIGS. 6A-6B.
[0104] The annular washer 68 of the relief valve seat assembly 56 is configured to be annular in nature and includes a lower wall 57 and two spaced side walls 55 and 53. The lower wall 57 and spaced side walls 55 and 53 form a receiving opening 69 in the annular ring 68 that can receive a portion of the biased member 64 as illustrated in FIGS. 4A-6B to retain the biased member 64 in a fixed position. In particular, the annular washer 68 can retain the bias member 64 in a position that is longitudinally above the check valve 58, and the annular washer 68 and the bias member 64 can be aligned above the sealing ring of the check valve 78 of the valve seat 60 for applying downstream D force over a portion of check valve 58 that supports or contacts check valve sealing ring 78 to hold check valve 58 in a sealed position above span G1, as illustrated .
[0105] In various embodiments, the tendentious member 64 can be a spring or other similar tendentious mechanism that is retained within the retention span 47 of the valve seat 60, although other ways of applying downstream pressure to the upper surface 91 horizontal segment 90 of check valve 58 are provided here. In various embodiments, an upper surface 63 of the bias member 64 engages with the stop surface 43 of one or more latches 44 of the centering portion 72 of the valve seat 60. Consequently, the stop surface 43 provides stabilization for the biased member 64 be retained within the retention gap 47 and allow the biased member 64 to apply pressure D downstream to the check valve 58. In various embodiments, a lower surface 65 of the biased member 64 supports against or contacts the surface
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Upper 49/58 91 of check valve 58 for applying downstream pressure D. In other embodiments, as illustrated in FIGS. 1-8, a portion of the biased member 64 can be retained by the annular washer 68, and force from the biased member 64 is transferred to the upper surface 79 of the check valve 58 through the annular washer 68. Other modalities of pressure transfer Downstream for check valve 58 are provided here.
[0106] In various embodiments the lower surface 65 of the biased member 64 and / or the upper surface 63 of the biased member 64 may include a flat or planar segment 67 which is configured to rest on the check valve 58 and / or the annular washer 68 The flat segment 67 along the circumference of the annular biased member 64 may exist in a single plane so that the biased member 64 applies downstream force D consistently to substantially the entire circumference of the check valve 58.
[0107] In illustrative embodiments, valve seat 60 may further include one or more alignment ribs 104 that extend below the base plate sealing ring 74. Alignment ribs 104 can be positioned to be equally spaced around the circumference of valve seat 60, although other locations are also provided here. Alignment ribs 104 are configured to extend below the P2 plane of the base plate seal ring 74 and configured to fit with a portion of the base plate 36 to assist with alignment of the fluid flow control assembly 54 in one appropriate position within the filter assembly 20 when the base plate 36 is attached to the rest of the filter assembly 20. For example, in an illustrative embodiment, the base plate 36 may include a double distortion design featuring one or more grooves distorted downwards 106 forming an opening 108 for the inner cavity of the filter assembly 20. The
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50/58 alignment ribs 104 can be formed and positioned to extend into the opening 108 of the down-distorted grooves 106 of the base plate 36 in order to align the fluid flow control assembly 54 appropriately with respect to the base plate 36, and thus the rest of the filter assembly 20, when the base plate 36 is attached to the filter assembly 20. In various embodiments, the downwardly distorted grooves 106 can be annularly into the raised portion 110 of the base plate 36. Consequently, the alignment ribs 104 can be positioned to be annularly into the groove between the lower part of the valve seat 60 and the base plate 36 when the valve seat 60 rests on or contacts the upper surface 112 of the portion high 110.
[0108] The relief valve seat assembly 56 can be manufactured in any suitable manner. In one embodiment, valve seat 60, bias member 64 and washer 68 can be formed separately and then assembled together. In another embodiment, the biased member 64 and / or washer 68 can be at least partially inserted into a mold and rubber and / or another suitable material can be injected into the mold to create valve seat 60. In this way, when the injected material settles, the biased member 64 and / or the washer 68 will be at least partially embedded within the valve seat 60. Other ways of manufacturing the relief valve seat assembly 56 are provided here.
[0109] The assembly and operation of the filter assembly 20 and the fluid flow control assembly 54 will now be described. The filter element 28 is mounted with the annular filter means 45 on the core 30 and the end caps 50, 52 held in place. Mounting of filter element 28 can occur prior to mounting of filter assembly 20, for example, filter element 28 can be purchased from third parties. Spring 40 or other biased means, if used, is
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51/58 first inserted into the open end of the housing 22 until it rests against the closed end 26 of the housing 22. The filter element 28 is positioned in the housing 22 resting on the spring 40. The spring 40 is configured to hold the filter element 28 positioned away from the end 26 of the housing.
[0110] Fluid flow control assembly 54 can be mounted using a pressure-lock method, in which one or more of the components of fluid flow control assembly 54 are pressed together to be retained in the control assembly fluid flow 54. Therefore, the present description comprises a fluid flow control assembly 54 that does not require any stitching, welding, melting or applied glue to be assembled. Assembly may take place prior to installation of the fluid flow control assembly 54 within housing 22.
[0111] In an illustrative embodiment, the fluid flow control assembly 54 can be mounted by coupling the check valve 58 to the valve seat 60 by, for example, positioning the annular walls 43 of the valve seat 60 within the opening check valve 58 center and securing the check valve 58 against the check valve sealing ring 78 of the seat portion 70 of the valve seat 60. The ring washer 68 and the bias member 64 can then be inserted into the annular walls 42 to be received into the retaining gap 47 of the valve seat 60 along the outer surface 41 of the annular walls 42. The bias member 64 can be pressed against the stop surface 43 of the latches 44 of the valve seat 60 to put the biased downstream force on annular washer 68 and check valve 58, thereby holding the components of the fluid flow control assembly 54 in place.
[0112] Once assembled, the fluid flow control assembly
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52/58 can be placed in the housing 22 after the filter element 28. The annular walls 42 of the valve seat 60 will be received within the flow opening 31 formed in the core 30 to position the fluid flow control assembly 54 in a appropriate position in relation to the rest of the components. This automatic positioning of the fluid flow control assembly 54 advantageously provides a simple and easy way to align the components together for assembly. In addition, through such positioning, a portion of the upper surface 91 of the check valve 58 will rest on the lower end cap 50 of the filter element 28. This support will, among other things, prevent the fluid flow control assembly 54 is incorrectly aligned within the filter assembly 20 or positioned in an unwanted place. The alignment will also help to seal unwanted fluid flow between the fluid flow control assembly 54 and the core 30 of the filter element 28. Base plate 36 is inserted to close the open end of housing 22, and a cover 38 is inserted into the base plate 36 to secure all components together within housing 22. The configuration of the fluid flow control assembly 54 further provides correct positioning of the base plate 36 with respect to the fluid flow control assembly 54 without additional fixation between these components. For example, the fluid flow control assembly 54 can be spaced from, or lose contact with, the flange 37 of the outlet opening 80. In addition, the alignment ribs 104 that extend towards the base plate 36 can provide some automatic positioning of the base plate 36 in relation to the fluid flow control assembly 54 and vice versa. An outer edge 29 of the cap 38 is wound, for example, with the open end of the housing 22 to form a seal (FIG. 3). Optionally, any other suitable seal can be formed between the cover 38 and the housing 22.
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53/58
[0113] The components are assembled together so that the opening 31 formed by the core 30 of the filter element 28 is generally aligned along the longitudinal axis 82 of the filter assembly 20, and the longitudinal axis A of the valve seat 60 is substantially aligned with longitudinal axis 82. Consequently, the flow opening 100 of valve seat 60 will be aligned with the outlet opening 80 of the base plate 36, allowing fluid to flow out of the filter assembly 20.
[0114] The components are configured to allow easy assembly, and can be used for a variety of sizes and shapes of a filter assembly 20. In light of the automatic positioning that occurs by the proposed design, the fluid flow control assembly 54 does not need to be directly or firmly attached to filter element 28 (for example, core 30 or end cap 50), and it does not yet need to be firmly attached to the base plate
36. Such a design provides an advantage that no firm connection (for example, plug-in connection or the like) is required between the fluid flow control assembly 54 and any individual component. In contrast, the configuration allows the fluid flow control assembly 54 to be maintained in an appropriate position by its alignment elements and the pressure applied to the fluid flow control assembly 54 from the components of the filter assembly 20, such as the filter element 28 (which is biased downward by the spring 40) and the base plate 36.
[0115] Illustratively, positioning the base plate 36 in the housing 22 partially compresses the spring 40, so that when the parts are assembled, a spring force is applied to the upper part of the filter element 28 by raising the filter element 28 toward fluid flow control assembly 54 and base plate 36. If spring 40 is used, the spring force will help secure the
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54/58 fluid flow control 54 between filter element 28 and base plate 36, and restrict flow between filter element 28 and base plate 36 (and vice versa) to be through the control assembly fluid flow rate 54. Core 30 can engage with annular walls 42 of valve seat 60 and end cap 50 can also engage and support the generally horizontal segment 90 of check valve 58, sealing it against the ring cartridge sealing ring 76 and check valve sealing ring 78 of valve seat 60.
[0116] In operation, the filter assembly 20 is rotated on an engine block stud bolt (not shown), which fits into threads (not shown) in the central outlet opening 80 on the base plate 36, and is secured in the place. The gasket 25 coupled with the cap 38 will fit into the engine block and prevent fluid flow between the engine block and the filter assembly 20. Although particular gasket and cap are described and illustrated, any suitable gasket and cap configuration can be used with the principles of this application.
[0117] When the engine is started, fluid, usually oil, will enter filter assembly 20 through inlet openings 66. Under normal operations, light pressure from the incoming oil will be applied to check valve 58, for example , on the underside of the angled segment 92. As illustrated in FIGS. 5A-5B, this light pressure will cause the angled segment 92 to fold up in the fold 94 on the check valve 58, causing the free end 96 of the angled segment 92 to move away from the socket with the upper surface 62 of the base plate 36. Oil will then flow under a normal flow stroke N past check valve 58. For example, oil will flow through inlet openings 66, around free end 96 of check valve 58 and the end 50 of the filter element 28, through the first face 46 of the filter means of the filter element 28, through
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55/58 of the second face 48 of the filter element 28 and past the core 30 of the filter element, in the opening 31, through the flow opening 100 of the valve seat 60, and then to the outlet opening 80 of the base plate 36 to be unloaded to return to the engine. When the engine is stopped, the pressure will decrease, causing the angled segment 92 of the check valve 58 to close against the base plate 36 again, closing access through the inlet openings 66 and preventing oil return in the filter assembly 20 to the motor.
[0118] Once the filter medium becomes clogged during normal operation, oil will flow into the passage P of the seat portion 70 of the valve seat 60 and hit the horizontal segment 90 of the check valve 58 that extends through the gap G1. A differential pressure will be created through the horizontal segment 90 of the check valve 58, applying an upward force on the horizontal segment 90. When reaching a predetermined pressure, for example, in the order of about 6 to 36 psid at 0.1 gpm with 18cSt oil in an illustrative embodiment (although other predetermined pressures are provided here), the horizontal segment 90 of the check valve above the sealing ring of the check valve 78 will overcome the downward pressure D of the biased member 64 of the valve seat 60, making with the end point 71 of the horizontal segment 90 of the check valve 58 moving upwards and opening oil flow through the gap G1, as illustrated in FIGS. 6A-6B. At this point, oil will flow through the bypass flow path B. For example, oil can flow into the openings 66, through the passage P and span G1, to the bypass openings 102 of the centering portion 72 of the valve seat 60 , for the outlet opening 100 of the valve seat 60 and for the outlet opening 80 of the base plate 36 to exit the filter assembly 20 back to the engine, thereby bypassing the filter means of the filter element 28. In other words, for periods of time when high differential pressure
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56/58 exists through the filter medium, due to cold thick oil or high contaminant load from the filter medium, for example, oil will travel through passage P and open the horizontal segment 90 of the check valve 58 through the gap G1 of the seat valve 60 to allow oil to bypass the filter medium through the bypass stroke B and exit filter assembly 20 through central outlet opening 80 to return to the engine.
[0119] In various embodiments, a portion of the horizontal segment 90 of the check valve 58 spaced from the end point 71 is held in a fixed position relative to the end point 71 during the bypass operation, causing the end point 71 of the segment horizontal 90 pivot upwards when pressure increases after a predetermined threshold. As illustrated, for example, in FIGS. 4A-6B, the end cap 50 of the filter element 28 can rest on the horizontal segment 90 of the check valve 58 which is aligned over the cartridge seal ring 76. Force from spring 40 of the filter assembly 20 as well as a compressive force from the base plate 36 and cap 38, it can hold the end cap against the horizontal segment 90 at this point, creating a pivot area for the rest of the horizontal segment 90 to move relative to when the pressure of oil has exceeded the threshold to cause the upward force of the horizontal segment 90 to overcome the downward force D of the biased member 64. In this way, oil is prevented from again entering a flow path towards the filter element 28 and is directed to pass through valve seat 60 under the bypass process.
[0120] During operation, the biased member 64 provides the desired amount of predetermined resistance to move the horizontal segment 90 of the check valve 58 upwards to allow oil to pass through the gap G1 at the end of the stroke P. More particularly, the member biased 64 is designed with a value of
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57/58 particular resistance (based on, for example, a spring rate, tensile strength, hardness, modulus of elasticity, thickness, number of arms, distance between arms and other properties of the spring), where the resistance value it is overcome when reaching a predetermined pressure in the housing (for example, between about 6 and about 36 psid at 0.1 gpm with 18cSt oil). The predetermined pressure and then the required resistance value of the biased member 64 may be different for different filter assemblies and / or applications. The biased member 64 is easily customizable for these different applications and provides a more precise resistance value, thereby providing more control over the flow of fluid through the course P and through the gap G1 to the bypass openings 102.
[0121] In any of the present embodiments, a resistance or load on the biased member 64 when mounted on the filter assembly 20 can be determined by multiplying the surface area of the horizontal segment 90 of the check valve 58 which is exposed to a differential pressure through it a predetermined relief valve opening pressure. For example, if an area under the horizontal segment 90 in the G1 span is approximately 6.45 cm ² (1 square inch) and a predetermined valve opening pressure is 137.895 kPa (20 pounds per square inch (psi)), the spring load of biased member 64 could be 9.07 kg (20 pounds).
[0122] Figure 9 illustrates exemplary flow curves of flow rate for flow restriction in exemplary mode of the fluid flow control assembly 54 having different spring loads. In particular, Figure 9 illustrates the change in flow restriction through different flow rates for different spring loads (Ib-F) when using standard conventional oil (5w30) having a defined viscosity (50 +/- 5cST (mm ² / s). As illustrated, the flow restriction (PSID, pounds per inch
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58/58 differential square) of the fluid flow control assembly can be increased or decreased at the same flow rates mentioned (ie the curve moves up or down on the flow restriction axis) by selecting a spring with a different Ib-F load in its load height. The higher the average spring load, the greater the flow restriction will be at a given flow rate. Other means of changing the flow curve are provided here.
[0123] Although directional terminology, such as higher, lower, upper, lower, etc., is used throughout the present application, such terminology is not intended to limit the invention. Such terminology is only used for purposes of describing the various elements and components in relation to each other. Although certain illustrative modalities have been described in detail in the figures and in the description above, such illustration and description must be understood as exemplary and not restrictive in character, being understood that only illustrative modalities have been shown and described and that all changes and modifications that are in the spirit of the description they are desired to be protected. There are a plurality of advantages of the present invention that arise from the various elements of the apparatus, systems and methods described here. It will be noted that alternative modalities of the apparatus, systems and methods of the present description may not include all the elements described and still benefit from at least some of the advantages of such elements. Those of skill in the art can readily create their own implementations of the apparatus, systems and methods that incorporate one or more of the elements of the present invention.

权利要求:
Claims (33)
[1]
1. Assembly of fluid flow control for a fluid filter, characterized by the fact that it comprises:
an annular check valve extending between an edge of the inner perimeter and an edge of the spaced outer perimeter, the annular check valve including a substantially horizontal portion adjacent to the edge of the inner perimeter and an angled portion adjacent to the edge of the outer perimeter, the edge the internal perimeter defining an opening through the check valve; and a relief valve assembly received within the check valve opening and aligned with the check valve along a longitudinal axis of the fluid filter, the relief valve assembly including a valve seat, a biased member and a annular washer, and the valve seat includes a sealing portion formed to include a bypass flow path through it and a centering portion including one or more annular walls defining a central relief valve opening extending along the longitudinal axis, the sealing portion including a sealing ring that a portion of the horizontal portion of the check valve contacts to prevent fluid flow from the bypass flow path; and wherein the biased member is retained between a stop surface of one or more annular walls of the valve seat and a stop surface of the check valve to tend the check valve towards the sealing portion of the valve seat to lock fluid flow through the bypass flow path.
[2]
2. Fluid flow control assembly according to claim 1, characterized by the fact that the biased member is a helical spring formed in a substantially cylindrical shape.
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2/7
[3]
3. Fluid flow control assembly, according to claim 2, characterized by the fact that the annular washer is positioned between the helical spring and the upper surface of the check valve that holds a portion of the helical spring.
[4]
4. Fluid flow control assembly, according to claim 3, characterized by the fact that the coil spring includes a flat surface configured to contact the annular washer.
[5]
5. Fluid flow control assembly according to claim 1, characterized by the fact that the valve seat is a two-piece component.
[6]
6. Fluid flow control assembly according to claim 5, characterized in that the valve seat includes a centering portion and a seat portion that is separable from the centering portion.
[7]
7. Fluid flow control assembly according to claim 6, characterized by the fact that the sealing ring of the sealing portion is integrally formed with the centering portion.
[8]
8. Fluid flow control assembly according to claim 7, characterized in that the seat portion includes a cartridge seat portion that is formed separate from the seal ring of the seal portion, but is radially aligned outward and substantially parallel with the sealing ring of the sealing portion when the seat portion is coupled together with the centering portion.
[9]
9. Fluid flow control assembly according to claim 1, characterized by the fact that one or more annular walls are spaced from each other to define one or more bypass openings between them.
[10]
10. Assembly of fluid flow control, according to
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3/7 to claim 9, characterized by the fact that one or more bypass openings allow fluid flow to the central opening of the relief valve assembly.
[11]
11. Fluid flow control assembly according to claim 9, characterized by the fact that the one or more bypass openings are each configured to align longitudinally with the bypass flow path of the sealing portion .
[12]
12. Fluid flow control assembly according to claim 1, characterized in that the angled portion of the check valve is configured to move from a blocked portion, where the angled portion engages with a portion of the oil filter to prevent fluid flow through an oil filter element, to a flow position, where the angled portion is spaced from the oil filter portion to allow fluid flow to the filter element.
[13]
13. Filter assembly, characterized by the fact that it comprises:
a housing opening at one end and containing a filter element therein, the housing positioned along a longitudinal axis of the filter assembly;
a base plate attached to the housing at the opening end and enclosing the filter element within the housing, the base plate including one or more inlet openings to allow fluid to flow into the housing and an outlet opening to allow fluid to flow into outside the housing; and a fluid flow controller disposed between one end of the filter element and the base plate, the fluid flow controller comprising:
an annular check valve having an internal perimeter edge defining an opening through the check valve;
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4/7 a valve seat having a sealing surface substantially perpendicular to the longitudinal axis of the filter assembly and a stopping surface substantially perpendicular to the longitudinal axis of the filter assembly, the valve seat configured with a bypass flow passage through the sealing surface, and where the check valve is configured to engage with the sealing surface in a sealed position to block fluid flow through the bypass flow passage;
a biased member extending parallel to the longitudinal axis between the stop surface and the sealing surface of the valve seat, a lower part of the biased member applying a biasing force on the check valve adjacent to the sealing surface to retain the valve checking in the sealed position; and a washer positioned between the biased member and the check valve;
in which the valve seat is received by opening the check valve.
[14]
14. Filter assembly according to claim 13, characterized in that the base plate is formed to define a shoulder portion that extends into the housing.
[15]
Filter assembly according to claim 14, characterized in that the fluid flow controller includes a lower surface, wherein a portion of the lower surface contacts the shoulder portion of the base plate.
[16]
16. Filter assembly according to claim 14, characterized in that the fluid flow controller is maintained within the filter assembly by means of compression between the filter element and the base plate.
[17]
17. Filter assembly according to claim 13,
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5/7 characterized by the fact that the inlet openings extend through the shoulder portion.
[18]
18. Filter assembly according to claim 13, characterized in that the fluid flow controller includes a central flow opening aligned with the outlet opening of the base plate.
[19]
19. Filter assembly according to claim 18, characterized in that the base plate includes a flange that defines the outlet opening, and in which the fluid flow controller does not contain the flange.
[20]
20. Filter assembly according to claim 13, characterized in that the fluid flow controller includes a bottom surface having one or more alignment ribs that extend below the bottom surface.
[21]
21. Filter assembly according to claim 20, characterized in that each of the one or more alignment ribs is annularly spaced around the fluid flow controller.
[22]
22. Filter assembly according to claim 20, characterized by the fact that each of the one or more alignment ribs is received within a groove formed in the base plate.
[23]
23. Valve seat for a relief valve assembly, characterized by the fact that the valve seat extends along a longitudinal axis and comprises:
a seal portion formed to include a bypass flow path therethrough, the seal portion including an inner seal ring and an outer seal ring that is radially out of the inner seal ring, the inner seal rings and extending in the foreground and defining a
Petition 870190126965, of 12/02/2019, p. 81/88
6/7 go between them, o forming an outlet for the bypass flow course, the inner and outer sealing rings each including a top surface that a relief valve assembly check valve engages when the check valve blocks the gap; and a centering portion positioned adjacent the inner sealing ring, the centering portion including two or more annular walls defining a central opening of the valve seat along the longitudinal axis, the annular walls spaced from each other to provide a bypass opening which is in fluid communication with the span of the sealing portion and the central opening to allow fluid flowing through the bypass flow of the sealing portion to flow into the central opening.
[24]
24. Valve seat according to claim 23, characterized in that the inner sealing ring is formed with the centering portion.
[25]
25. Valve seat according to claim 23, characterized in that the annular walls of the centering portion further include one or more locks that protrude radially out of the annular walls, and in which the locks provide a stop surface to retain a biased member of the relief valve assembly.
[26]
26. Valve seat according to claim 23, characterized in that the bypass opening of the centering portion extends from the inner sealing ring to an upper part of the centering portion.
[27]
27. Valve seat according to claim 23, characterized in that the bypass opening of the centering portion extends to a bypass opening formed in the inner sealing ring of the sealing portion.
[28]
28. Valve seat according to claim 23,
Petition 870190126965, of 12/02/2019, p. 82/88
7/7 characterized by the fact that the bypass opening is radially displaced from the gap between the sealing rings.
[29]
29. Valve seat according to claim 23, characterized in that the sealing portion further comprises a third sealing ring that extends in a second plane spaced from the first plane, the third sealing ring being substantially parallel with inner and outer sealing rings and still forming a portion of the bypass flow path.
[30]
30. Valve seat according to claim 29, characterized in that the third sealing ring is coupled to the internal sealing ring through a connecting wall that is perpendicular to the third sealing ring and the internal sealing ring .
[31]
31. Valve seat according to claim 29, characterized in that the third sealing ring further includes one or more alignment ribs that extend in a direction away from the inner and outer sealing rings.
[32]
32. Valve seat according to claim 23, characterized in that the inner and outer sealing rings are formed to be separated from each other.
[33]
33. Valve seat according to claim 23, characterized in that the inner and outer sealing rings are connected via one or more connecting bridges extending through the span, the connecting bridges extending in the first plan.

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同族专利:

---

公开号 | 公开日

---

WO2018200441A1|2018-11-01|

---

US20180304179A1|2018-10-25|

---

EP3615170A4|2021-01-13|

---

CA3061500A1|2018-11-01|

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JP2020517444A|2020-06-18|

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EP3615170A1|2020-03-04|

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KR20200037134A|2020-04-08|

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CN110997098A|2020-04-10|

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法律状态:
2021-04-20| B08F| Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]|Free format text: REFERENTE A 3A ANUIDADE. |

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2021-08-10| B08K| Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]|Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2624 DE 20/04/2021. |

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2021-10-19| B350| Update of information on the portal [chapter 15.35 patent gazette]|

优先权:

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申请号 | 申请日 | 专利标题

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US201762489035P| true| 2017-04-24|2017-04-24|

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US62/489,035|2017-04-24|

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PCT/US2018/029027|WO2018200441A1|2017-04-24|2018-04-24|Filter assembly and relief valve of same|

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