• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    SELF-INFLATABLE TIRE AND PRESSURE REGULATOR. A self-inflating tire set includes an air tube attached to a tire and defining an air passage, the air tube being made up of a flexible operating material to allow a segment of the air tube opposite a tire footprint to flatten, closing the passage, and resiliently flatten in an original configuration. The air tube is sequentially flattened by the tire's footprint, in the opposite direction to a direction of rotation of the tire to pump air along the passage to a regulating device. The regulating device regulates the inflow of air to the air tube and the outflow of air to the tire cavity.
    公开号:BR102012021688B1
    申请号:R102012021688-4
    申请日:2012-08-28
    公开日:2020-12-08
    发明作者:Daniel Paul Luc Marie Hinque
    申请人:The Goodyear Tire & Rubber Company；
    IPC主号:
    专利说明:

    Field of the Invention
    [001] The invention generally relates to self-inflating tires and, more specifically, to a pump and pressure regulator mechanism for such tires. Background of the Invention
    [002] Normal air diffusion reduces tire pressure over time. The tires' natural state is inflated. Thus, drivers must repeatedly act to maintain tire pressure or they will see reduced fuel economy, tire life and reduced vehicle handling and braking performance. Tire pressure monitoring systems have been proposed to warn drivers when tire pressure is significantly reduced. Such systems, however, remain dependent on the driver taking corrective measures when prompted to inflate the tire to a recommended pressure. It is therefore desirable to incorporate an auto-inflation feature within a tire that will auto-inflate the tire in order to compensate for any reduction in tire pressure over time, without the need for driver intervention. Summary of the Invention
    [003] The invention provides, in a first aspect, a self-inflating tire set comprising a tire mounted on a rim, the tire having a tire cavity, the first and second sidewalls extending, respectively, from the first and second second tire bead regions to a tire tread region. An air tube is attached to the tire and defining an air passage having an inlet and an outlet end, the air tube being composed of a flexible operating material to allow a portion of the air tube segment close to a footprint of the tire to close the substantially annular passage. A regulator device is connected to the inlet and outlet end of the air tube, the regulator device including a regulator body mounted on the tire, and a cap attached to the regulator body, to which the regulator body is attached to a duct having a first end located inside the tire cavity, and a second end connected to a chamber formed between the cover and the regulator body. A flexible ring is mounted on the chamber and has one or more grooves. A pressure membrane is mounted on said ring. The regulator body further includes an inlet port for fluid communication with an outlet end of the air tube and the chamber, and an outlet port for fluid communication with the chamber and an inlet end of the air tube, and an entry of ambient air in fluid communication with the chamber and the pressure membrane. The ring is positioned to seal the entry hole in the regulator body. The regulator cover has a flange portion over a recessed chamber, in which the flange portion is positioned to seal the engagement with the pressure membrane, and the recessed chamber is in fluid communication with the outlet port of the regulator body. .
    [004] The invention provides, in a second aspect, a pressure regulator for a tire inflated with a tire cavity and mounted on a rim and connected to an inlet and outlet end of a peristaltic pump. The pressure regulator comprises a regulator device connected to the inlet and outlet end of the air pipe, the regulator device including a regulator body and a cap connected to the regulator body, where the regulator body is connected to a duct having a first end located in the tire cavity, and a second end connected to a chamber formed between the cover and the regulator body. A flexible ring is mounted on the chamber and has one or more grooves. A pressure membrane is mounted on said ring. The regulator body also has an inlet port for fluid communication with an outlet end of the air tube and the chamber, and an outlet port for fluid communication with the chamber and an inlet end of the air tube, and a entry of ambient air in fluid communication with the chamber and the pressure membrane. The ring is positioned to seal the entry hole in the regulator body. The regulator cover that has a flange portion over a recessed chamber, in which the flange portion is positioned to seal the engagement with the pressure membrane, and said recessed chamber being in fluid communication with the outlet port of the regulator body.
    [005] The invention provides in a third aspect a set of self-inflating tires comprising a tire mounted on a rim, the tire having a tire cavity, the first and second side walls extending, respectively, from the first and second tire bead regions for a tire tread region. An air tube is attached to the tire, with each air tube defining an air passage, each air tube being composed of a flexible operating material to allow a portion of the air tube segment close to a tire footprint to substantially open and close the annular passage. A regulator device is connected to an inlet end of the air tube, the regulator device includes a regulator body mounted on the tire sidewall, the regulator body having an external duct that has a distal end located inside the tire cavity , in which the duct has an internal hole that is in fluid communication with the tire cavity and an internal chamber of the regulator body. A pressure membrane is mounted inside the inner chamber of the regulator body. A cover is mounted inside the internal chamber of the regulator body and has a flange end capable of engaging with the pressure membrane, where the flange end surrounds an internal cavity, the cover has an upper surface having one or more holes of air extending from the upper surface and are in fluid communication with the internal cavity, said internal cavity in fluid communication with an outlet port of the regulator body, in which the outlet port is in fluid communication with one end inlet of the air tube. Definitions
    [006] "Aspect ratio" of the tire means the ratio of its section height (SH) to its section width (SW) multiplied by 100 percent for the expression as a percentage.
    [007] "Asymmetric tread" means a tread that has a non-symmetrical tread pattern around the tire's central plane or equatorial plane EP.
    [008] "Axial" and "axially" mean lines or directions that are parallel to the axis of rotation of the tire.
    [009] "Anti-friction fabric" is a narrow strip of material placed around the outer side of a tire bead to protect the cable from wear and cut linings against the rim and distribute the flex above the rim.
    [010] "Circumferential" means lines or directions that extend along the perimeter of the ring tread surface perpendicular to the axial direction.
    [011] "Equatorial central plane (CP)" means the plane perpendicular to the axis of the rotation tire and which passes through the center of the tread.
    [012] "Footprint" means the contact patch or tire contact area with a flat surface with zero speed and under normal load and pressure.
    [013] "Inner Side" means the side closest to the vehicle's tire when the tire is mounted on a wheel, and is mounted on the vehicle.
    [014] "Lateral" means an axial direction.
    [015] "Side edges" means a line tangent to the patch of axially outer contact of the tread or footprint as measured under normal load and tire inflation, the lines being parallel to the equatorial central plane.
    [016] "Net contact area" means the total area of contact with tread ground elements between the side edges around the entire circumference of the tread divided by the gross area of the entire tread between the side edges .
    [017] "Non-directional tread" means a tread that has no preferred forward movement direction and is not required to be positioned on a vehicle, in a specific wheel position or positions to ensure that the tread pattern of travel is aligned with the preferred direction of travel. On the other hand, a directional tread pattern has a preferred travel direction requiring specific wheel placement.
    [018] "Outer side" means the side of the tire furthest from the vehicle when the tire is mounted on a wheel, and the wheel is mounted on the vehicle.
    [019] "Peristaltic" means operating by means of wave-like contractions, as if they propel the contained matter, such as tubular paths through the air.
    [020] "Radial" and "radially" mean radial directions in the direction of or away from the tire's axis of rotation.
    [021] "Rib" means a strip extending circumferentially of rubber over the tread which is defined by at least one circumferential groove and either a second such groove or a side edge, the strip being laterally not divided by full depth grooves.
    [022] "Grooves" means small grooves molded into the tire tread elements, which subdivide the tread surface and improve traction; grooves are usually narrow in width and close in the tire's grip as opposed to the grooves that remain open in the tire's grip.
    [023] "Tread element" or "traction element" means a rib or block element defined by having adjacent groove shapes.
    [024] "Tread arc width" means the length of the tread arc as measured between the lateral edges of the tread. Brief Description of Drawings
    [025] The invention will be described by way of example and with reference to the accompanying drawings in which: Figure 1 is an isometric view of the tire and rim assembly showing a reversible peristaltic pump assembly; Figure 2 is a side view of the tire in Figure 1; Figure 3a illustrates a side view of the tire, rim, tubes, and valves showing the operation of the pump into the tire cavity, when the tire rotates counterclockwise; Figure 3a illustrates a side view of the tire, rim, tubes, valves and showing the operation of the pump into the tire cavity, when the tire rotates clockwise; Figure 4 is an enlarged cross-sectional view of a portion of the tire bead area and rim assembly with the pressure regulator shown mounted on the tire sidewall; Figure 5 is a partial section view through the tire under load on the road surface; Figure 6A is an enlarged view of a portion of Figure 5 showing the tube being compressed in the area of the tire bead, while Figure 6B shows the tube in an open state; Figure 7 is a perspective view of a pressure regulator; Figure 8 is a top view of the pressure regulator in Figure 7; Figure 9 is an exploded perspective view of the pressure regulator of Figure 7; Figure 10 is an exploded cross-sectional view of the pressure regulator of Figure 7 taken along lines 13 - 13; Figure 11 is an exploded cross-sectional view of the pressure regulator of Figure 7 taken along lines 12 - 12; Figure 12A is a cross-sectional view of the pressure regulator of figure 7 taken along lines 12 - 12, and shown in the closed position, while figure 12B is shown in the open position; Figure 13 is a cross-sectional view of the pressure regulator of Figure 7 taken along lines 13 - 13; Figure 14 is a cross-sectional view of the pressure regulator of Figure 8 taken along lines 14 - 14; Figure 15 is a cross-sectional view of the pressure regulator in Figure 8 taken along lines 15 - 15; Figure 16 is a cross-sectional view of the pressure regulator of figure 8 taken along lines 16 - 16. Detailed Description of the Invention
    [026] With reference to figures 1 and 5, a tire set 10 includes a tire 12, a reversible peristaltic pump set 14, and a tire rim 16. The tire is mounted in a conventional manner to a pair of tire surfaces. rim assembly 18, 20 located adjacent to the outer flanges of the rim 22, 24. The outer flanges of the rim 22, 24 have an outer surface of the rim 26. An annular body of the rim 28 connects the rim flanges 22, 24 and supports the tire set as shown. The tire is of conventional construction, having a pair of side walls 30, 32 that extend from opposite bead areas 34, 36 to a crown or a tread region of the tire 38. The tire and rim include a tire cavity 40.
    [027] As shown in figures 1, 2 and 3, the peristaltic pump assembly 14 includes a pump 41 that is mounted in a passage 43 located in the lateral area of the tire, preferably close to the bead region. The air passage 43 can be molded on the tire sidewall during vulcanization or molded after curing. The passage is preferably ring-shaped. The pump 41 has a first end or inlet end 42 and a second end or outlet end 44, joined by a regulating device 54. The first end 42 and the second end 44 are colocalized, so that the pump body is about 360 degrees in circumference. The pump 41 is composed of a tube body formed by a resistant flexible material, such as plastic, elastomer or rubber compounds, and is able to withstand repeated deformation cycles when the tube is deformed in a flattened condition subject to external force and , after removing such force, returns to an original condition generally circular in cross section. The tube is of a sufficient diameter to operatively pass a volume of air sufficient for the purposes described here and allowing a positioning of the tube in an operable location within the tire assembly, as will be described. Preferably, the tube has a circular cross-sectional shape, although other shapes such as elliptical can be used.
    [028] The regulating device 54 is shown in figure 4 and figures 7 to 15. The regulating device 54 works to regulate the inlet and outlet flow of the pump 41. The regulator device 54 includes an optional external cover 56 that can be molded on a green tire and then cured or inserted after curing. The optional external cover 56 has two side holes 58, 60 for fluid communication with the pump inlet and outlet tube 41, as described in more detail below. The lid further comprises an inner cavity 62 formed by side walls 64 and bottom wall 66. A hole 68 is located in the bottom wall.
    [029] A regulator body 70 is received inside the cavity 62 inside the lid 56. The regulator body 70 has an external duct 72 having a first end 74 which is connected to the regulator body and a distal end 76 which is received inside the bottom hole 68 of the internal cavity 62. The external duct 72 is dimensioned to be of sufficient length so that the distal end 76 of the duct is in fluid communication with the tire cavity 40. The external duct 72 has a central hole 78 extending from the first end 74 to the distal end 76. The first end 74 of the outer duct 72 is connected to a main chamber 80 which is preferably located centrally within the regulator body 70. The inner chamber has two holes opposites 82.84 leading to a left chamber 86 and a right chamber 88 located on either side of the main chamber 80. Left chamber 86 has a side hole 87 and configured to align with hole 60 on the cover. The right chamber 88 has a side hole 89 and configured to align with hole 58 in the cover.
    [030] A ring valve 90 is received inside the main chamber 80 and has end flanges with flanges 92 aligned for reception in the grooves 94 on the side walls of the chamber. The ring valve 90 is a ring-shaped member that is formed of a flexible material, such as, but not limited to rubber, plastic, elastomer, or silicone. Ring valve 90 has one or more recessed side grooves 98. The outer wall 100 of the ring valve is positioned for corresponding engagement with holes 82, 84 in main chamber 80.
    [031] A pressure membrane 104 is positioned over the ring valve 90. The pressure membrane is a disk-shaped member made of a flexible material, such as, but not limited to rubber, plastic, elastomer, or silicone. The pressure membrane is responsive to the pressure of the external atmosphere through the holes 106, and the tire cavity pressure communicated through the duct 72.
    [032] A regulator cover 120 is attached to the regulator body, forming internal routes for the management of air flow within the regulating device. This regulator cover 120 can be installed in two ways (ie reversible) on the regulator body 70 to allow pumping for a given direction of rotation of the tire. The regulator cover has an upper flange surface 122 having one or more air holes 106 that extend from the upper surface and down through the regulator cover and into a recessed chamber 124. The recessed chamber 124 has a portion with flange 128 surrounding the recessed chamber 124 and is positioned for engagement with the pressure membrane. The pressure membrane may surround the flange portion 128 forming a seal that prevents air flow from hole 106 from passing through the regulating device. As shown in figure 13, the recessed chamber 124 is connected to a transverse passage 130 in the regulator cover, which directs the air flow to an outlet orifice 140 formed by a first flange end 142. The outlet port has an outlet port 144 which connects to the side hole of the right chamber 89 of the regulator body which is still connected with the port of cover 58 connected to an inlet end 42 of the pump. Thus, air from outside can enter holes 106, as shown in figure 12B. The air flow is additionally blocked from the entrance to the lower chamber 124 if the pressure in the tire cavity is high so that the pressure diaphragm rests against the flange portion 128 of the lower chamber 124. If the pressure in the tire chamber tire is low, the diaphragm pressure is removed from the flange portion and air can enter the lowered chamber, as shown in figure 12b. Figures 13 and 14 illustrate air traveling through passage 130 into orifice 140 and out of outlet orifice 144, through regulator orifice 89, through hole in cap 89 and into the end of the pump inlet pipe 42, as shown in figure 14.
    [033] Figure 15 illustrates how the air coming from the outlet end of the peristaltic pump 44 travels through the regulating device and is then pumped into the tire. The air coming from the pump outlet end enters the regulator device 54 through the cap hole 60 and then through the aligned regulator hole 87 of the regulator 70. The air then enters the regulator cap 120 through a channel 150 located in a second flanged end 154 of the regulator cover. Channel 150 has an inlet 152 aligned with regulator hole 87 and an outlet 156 aligned with hole 82 located in the left chamber of the regulator body. Hole 82 is sealed by the ring valve, which blocks the two holes 82, 84, as shown in figure 15, to prevent air flow from escaping the tire cavity. In order to pump air into the tire cavity, air from the pump tube enters duct 72 when the pump pressure removes the ring valve from regulator port 82. When the ring valve is removed from the pressure from the pump, the air passes through the grooves of the ring valve and then to the duct 72 which inserts the air into the tire cavity 40. System Operation
    [034] As will be appreciated from figure 3A, the regulating device 54 is in fluid communication with the inlet and outlet end of the circular air tube 42. As the tire rotates in the direction of rotation 200, a footprint 202 is formed against the surface of the ground 204. A compression force 206 is directed at the footprint of tire 202 and acts to flatten a segment 110 of the pump 42. The flattening of the segment 110 of the pump 41 forces a portion of the air located between the flattened segment 110 and the regulator device 54 in the direction shown by arrow 208 in the direction of the regulator device 54.
    [035] As the tire continues to rotate in the 200 direction along the surface of the ground 204, the pump tube 41 will be sequentially flattened or compressed segment by segment 110, 110 ', 110' ', etc., in one direction 208, which is opposite the direction of rotation of the tire 200. The sequential flattening of the pump tube 41 segment by segment causes the air column located between the flattened segments and the regulator device 54 to be pumped into the regulator device 54 and then into the tire cavity.
    [036] With the tire rotating in the 200 direction, the flattened pipe segments are sequentially refilled by air 220 flowing into the regulator device 54 along the pump pipe 42 in the direction 222, as shown in figure 3A. The regulating device controls the flow of air into the pump. If the tire pressure is low, the regulator will allow air to enter the pump regulator and then the tire. Air from the pump tube outlet enters the regulator body through the cap hole and then through the cap passage 150. The air pressure generated by the pumping mechanism removes the ring valve from the regulating hole. 82. When the ring valve is removed from the pump pressure, air passes through the grooves of the ring valve into the chamber and then into the duct 72 which inserts the air into the tire cavity 40. The regulator can also fill the pump with air, while the tire is about to be pumped.
    [037] If the tire pressure is sufficient, the regulating device will block the flow from entering the pump inlet. The pressure membrane is responsive to the pressure in the tire cavity and engages the flange portion 128 of the regulator cover forming a seal that prevents the flow of air from the orifice 106 to pass through the regulator device. The material properties of the pressure membrane are adjusted to have the desired tire pressure settings.
    [038] The regulating device also works to prevent the flow from the tire cavity to enter the end of the pump through the seal of the ring that blocks the hole 82.
    [039] The location of the tire peristaltic pump assembly will be understood from figures 4 to 6. In one embodiment, the peristaltic pump assembly 14 is positioned on the tire sidewall, radially out of the rim flange 26 on the surface of the anti-friction fabric 120. Thus positioned, the air tube 42 is radially into the tire footprint 202 and is therefore positioned to be flattened by forces directed from the tire footprint, as described above. The segment 110, which is opposite the footprint 202, will flatten from the compression force 206 from the footprint 202 by pressing the pipe segment against the surface of the rim flange 26. Although the positioning of the pipe 42 is specifically shown as between a antifriction screen 120 of the tire in the region of the bead 34 and the surface of the rim 26, is not limited to it and can be located in any region of the tire, such as anywhere on the sidewall or the tread. The diametric dimensioning of the air tube of the peristaltic pump 41 is selected to cover the entire circumference of the rim flange surface 26.
    [040] From what follows, it will be appreciated that the object of the invention provides a peristaltic pump for a self-inflating tire in which a circular air tube 41 flattens segment by segment and closes in the tire footprint 202. Regulator device 54 can optionally include a filter (not shown). The peristaltic pump assembly 14 pumps air under the rotation of the tire in one direction for a given installation direction of the cap 120. If the cap is installed in the other direction on the body 70, the system pumps while the tire is rotating in the opposite direction , as shown in figure 3B. the peristaltic pump assembly 14 can be used with a secondary tire pressure monitoring system (TPMS) (not shown) of conventional configuration, which serves as a system failure detector. TPMS can be used to detect any failure in the tire set's auto-inflation system and alert the user of such a condition.
    [041] Variations in the present invention are possible in light of the description given herein. Although the determined representative modalities and details have been shown for the purpose of illustrating the present invention, it will be apparent to those skilled in the art that various changes and modifications can be made to it without departing from the scope of the present invention. It is, therefore, to be understood that changes can be made in the particular embodiments described, which will be within the full intended scope of the invention as defined by the appended claims below.
    权利要求:
    Claims (11)
    [0001]
    1. Pressure regulator device for a tire, the pressure regulator device (54) FEATURED for comprising: a regulator body (70) and a cover (120) connected to the regulator body (70), in which the regulator body (70) is connected to a duct (72) having a first end (76), and a second end (74) connected to a chamber (80) formed between the cover (120) and the regulator body (70); a flexible ring valve (90) being mounted in the chamber (80) and having one or more grooves (98); a pressure membrane (104) mounted on said flexible ring valve (90); said regulator body (70) further comprising an inlet port for fluid communication with an outlet end of an air tube or an air passage (43) and the chamber (80), and an outlet port (140 ) for fluid communication with the chamber (80) and an inlet end of an air tube and an air passage (43), and an ambient air inlet in fluid communication with the chamber (80) and the pressure (104); wherein the flexible ring valve (90) is positioned to seal the inlet port of the regulator body (70); wherein said lid (120) has a flange portion (122) on a recessed chamber (124), wherein the flange portion (122) is positioned to seal the engagement with the pressure membrane (104); wherein the recessed chamber (124) is in fluid communication with the outlet port (140) of the regulator body (70); and wherein the pressure regulating device is designed to regulate the pressure being in fluid communication with the first end (76) of the duct (72) connected to the regulator body (70).
    [0002]
    2. Pressure regulator device, according to claim 1, CHARACTERIZED by the fact that the cover (120) can be installed in two modes, ie reversible, in the regulator body (70), when installed in the regulator body (70 ), to allow pumping for a given direction of rotation of the tread, when the pressure regulating device is mounted on a self-inflating tire.
    [0003]
    3. Pressure regulating device, according to claim 1 or 2, CHARACTERIZED by the fact that the pressure regulating device (54) is for an inflated tire (12) having a cavity (40) and mounted on a rim (16 ) and connected to an inlet end (42) and an outlet end (44) of a peristaltic pump (41), in which the pressure regulating device (54) is for connecting to an inlet end (42) and a outlet end (44) of an air tube or air passage (43) of a peristaltic pump (41) and where the inlet port is for fluid communication with an outlet end of an air tube or a passage air (43) and the chamber (80), and the outlet port is for fluid communication with the chamber (80) and an inlet end of an air tube or overhead passage (43).
    [0004]
    4. Self-inflating tire set, FEATURED for understanding: a tire (12) having a tire cavity (40), first and second sidewalls (30, 32) that extend, respectively, from the first and second bead regions of the tire to a region of the tire tread (38); and an air tube or air passage (43) connected or integrated into the tire (12); the air tube or air passage (43) having an inlet end (42) and an outlet end (44), the air tube or air passage (43) being composed of, or formed by, a flexible material operative to allow a portion of the air tube segment or air passage segment close to a tire footprint (202) to substantially close the air tube or air passage (43); wherein the self-inflating tire assembly (10) further comprises the pressure regulating device (54) as defined in any one of claims 1 to 3; wherein the pressure regulator device (54) is connected to the inlet and outlet end of the air tube or air passage (43), where the regulator body (54) is mounted on the tire (12); and wherein the first end (76) of the duct (72) is located in the tire cavity (40).
    [0005]
    5. Self-inflating tire set according to claim 4, CHARACTERIZED by the fact that the pressure regulating device (54) is mounted inside the tire cavity (40).
    [0006]
    6. Self-inflating tire set, according to claim 4, CHARACTERIZED by the fact that the pressure regulating device (54) is mounted on the tread (38) of the tire (12).
    [0007]
    7. Self-inflating tire set according to any one of claims 4 to 6, CHARACTERIZED by the fact that the air tube or air passage (43) is sequentially flattened by the tire's footprint (202) to pump air along of the air tube or air passage (43) in a forward direction of rotation of the tire.
    [0008]
    Self-inflating tire set according to any one of claims 4 to 7, CHARACTERIZED by the fact that the air tube or air passage (43) is substantially of circular configuration.
    [0009]
    9. Self-inflating tire set according to any of claims 4 to 8, CHARACTERIZED by the fact that the air tube or air passage (43) is positioned between a tire bead region and a rim flange radially to within the tire tread region when the tire (12) is mounted on a rim (16).
    [0010]
    10. Self-inflating tire set according to claim any of claims 4 to 9, CHARACTERIZED by the fact that the air tube or air passage (43) is positioned between a bead region of the tire and the mounting surface the tire rim radially into the tire tread region when the tire is mounted on a rim (16).
    [0011]
    11. Self-inflating tire set according to any one of claims 4 to 10, CHARACTERIZED by the fact that the tire (12) is mounted on a rim (16).
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    法律状态:
    2013-07-30| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-10-29| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-08-04| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-08| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 28/08/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/221,433|US8573270B2|2011-08-30|2011-08-30|Self-inflating tire and pressure regulator|
    US13/221,433|2011-08-30|
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