• 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:
    VARIABLE THICKNESS SLIPS WITH MULTIPLE AREAS OF REDUCED THICKNESS. Tire treads and a method of forming tire treads (10) having a sipe (9) with a length extending between opposite end ends of the sipe and having a height and thickness that are variable across length and width. coverslip height. The coverslip thickness (18) includes a coverslip portion disposed between the opposite end ends defining the length of the coverslip and having a thickened portion extending at least partially around a perimeter of a thin portion. The thin portion is substantially 0.2 millimeters or less in thickness and forms at least 40% of the surface area along opposite sides of the coverslip, the opposite sides being disposed on opposite sides of the coverslip thickness.
    公开号:BR112017006284B1
    申请号:R112017006284-4
    申请日:2015-09-30
    公开日:2021-06-08
    发明作者:Robert Cecil Lawson；Sadi Kose
    申请人:Compagnie Generale Des Etablissements Michelin；
    IPC主号:
    专利说明:

    [0001] This application claims priority and benefit from International Application PCT/US2014/058351, filed September 30, 2014, at the US Receiving Office, which is hereby incorporated by reference. FUNDAMENTALS OF THE INVENTION Field of Invention
    [0002] This invention generally relates to tire treads and more particularly to tire treads having sipes, where at least a portion of the sipes has a reduced thickness. Description of Related Art
    [0003] Tire treads are known to include a pattern of voids and/or such discontinuities disposed along a ground engaging side of the tread to provide sufficient traction and drive during particular conditions. For example, grooves provide voids in which water, mud or other environmental materials can be diverted to better allow the tread surface to engage a ground surface. By providing the pattern of voids/discontinuities, the tread elements are formed along the tread, where the outer portion of said elements is disposed along the outer side of the tread to provide traction when the outer side engages on the surface of the ground (i.e. a surface on which the tire operates which is also referred to in this document as the tire operating surface).
    [0004] It is well known that the tread wears out during operation due to the generation of slip between the outside of the tire tread and the operating surface of the tire. This not only occurs when the tire's rolling direction is deviated from the vehicle's direction of travel to generate lateral pulling forces, such as when a vehicle is changing direction during turn or corner maneuvers, but also when the vehicle is moving in a straight line.
    [0005] In certain cases, it is advantageous to employ sipes which are narrow voids or slits which generally close in some case within a tire footprint, which is the contact area between the tire and the tire operating surface. For example, sipes can offer benefits in traction, such as in snow. Lamellas, however, can reduce the stiffness of a tire tread, resulting in unwanted tread wear. Therefore, there is a need to increase tread stiffness by reducing sipe thickness which, in turn, will reduce the occurrence of wear when employing the use of sipes in tire treads. SUMMARY OF THE INVENTION
    [0006] Particular embodiments of the present invention include tire treads having a sipe having a length extending between opposite end ends of the sipe and having a height and thickness which are variable. Particular embodiments of the present invention include a method of forming the same.
    [0007] Particular embodiments of a tread having a sipe and methods for forming the same include a tire tread comprising a length extending in a lengthwise direction, the lengthwise direction being a circumferential direction when the tread is arranged on a tread; a width extending in a lateral direction, the lateral direction being perpendicular to the direction in the lengthwise direction and a thickness extending in a direction in the depth direction of an outer side of engagement with the tread ground, the direction in the depth direction being perpendicular to both the lengthwise direction and the widthwise direction of the tread. The coverslip has a length extending between opposite end ends of the coverslip. A coverslip height and thickness are variable through the coverslip length and height.
    [0008] In various embodiments, the coverslip thickness includes a coverslip portion disposed between the opposite end ends defining the length of the coverslip and having a thickened portion extending at least partially around a perimeter of a thin portion. In certain cases, where the thin portion is substantially 0.2 millimeters or less in thickness and forms at least 40% of the surface area along opposite sides of the coverslip, the opposite sides are disposed on opposite sides of the coverslip thickness.
    [0009] The foregoing and other embodiments, objectives, features and advantages of the invention will be apparent from the following more detailed descriptions of particular embodiments of the invention, as illustrated in the accompanying drawings, in which like reference numerals represent like parts of the invention. DETAILED DESCRIPTION OF THE DRAWINGS
    [0010] FIG. 1 is a partial perspective view of a tire tread showing a plurality of tread blocks separated by lateral and longitudinal grooves, the longitudinal grooves, where the tread blocks include one or more sipes according to a embodiment of the invention.
    [0011] FIG. 2 is a perspective view of a slide molding element for forming the slides shown in FIG. 1 according to an embodiment of the invention
    [0012] FIG. 3 is a front elevation view of the lamella molding element shown in FIG. two.
    [0013] FIG. 4 is a cross-sectional view of the coverslip molding element shown in FIG. 2 taken along line 4-4.
    [0014] FIG. 5 is a perspective view of a coverslip molding element for forming a coverslip having a void of the same design in accordance with another embodiment of the invention, the lamella including a side void feature in a bottom of the lamella.
    [0015] FIG. 6 is a perspective view of a lamella molding element for forming a void of the same design in accordance with another embodiment of the invention, the lamella including a side void feature forming a groove disposed in a bottom of the lamella.
    [0016] FIG. 7 is a cross-sectional view of a coverslip molding element for forming a coverslip having a blank of the same design, where the coverslip has a thickness extending in a direction of the depth of the coverslip along a corrugated path in accordance with another embodiment of the invention .
    [0017] FIG. 8 is a partial sectional view of a coverslip shown in FIG. 1 taken along line 8-8.
    [0018] FIG. 9 is a partial sectional view of the coverslip shown in FIG. 8 taken along line 9-9.
    [0019] FIG. 10 is a perspective view of one side of the coverslip of FIGS. 8 and 9. DETAILED DESCRIPTION OF PARTICULAR MODALITIES
    [0020] The present invention includes methods for forming a tire tread, tire treads and tires including said treads, wherein any such tread includes one or more sipes having a variable thickness. The variable thickness includes a first lamella portion having one having a thick first portion extending at least partially around a perimeter of a thin first portion and a second lamella portion having a second thick portion extending at least partially around a thin first portion. a perimeter of a second thin portion, the first coverslip portion spaced from the second coverslip portion along the length of coverslip. By providing one or more lamellae, it is understood that a lamella or a plurality of lamellae may be provided on any tread. By virtue of employing these treads, a reduction in lamella thickness is achieved across a larger lamella area to increase local tread stiffness without sacrificing the durability of a corresponding lamella molding element. This results in reduced tread wear and improved rolling resistance, while also continuing to gain tire/vehicle performance benefits commonly achieved using one or more of these sipes.
    [0021] With respect to the tire treads described in this document, having the one or more sipes noted and a void characteristic in fluid connection with each of the one or more sipes, it is appreciated that such treads include a length , width and thickness. The length of the tread extends in a lengthwise direction. As the tread may be formed with the tire, or separately for further installation into the tire, such as during retreading operations, for example, the direction along the length of the tread is a circumferential (i.e., annular) direction when the tread is arranged on a tire. The width extends in a lateral direction, the lateral direction being perpendicular to the direction along the length, while the thickness extends in a direction towards the depth of an outer side of engagement with the tread floor, the direction in the direction of depth being perpendicular to both the lengthwise direction and the widthwise direction of the tread. By way of example, an exemplary tire tread is partially shown in FIG. 1, where the tread 10 includes a plurality of tread blocks 12 separated by longitudinal grooves 14 and lateral grooves 16. The tire tread extends in directions of tread length L10, tread width of tread W10 and tread thickness T10. Each tread block 12 includes one or more lamellas 18, each having a length L18 extending at least partially in a direction of the tread width W10, a height H18 extending at least partially in a direction of the tread depth. T10 tread and perpendicular to the tread length and a T18 thickness. Each coverslip has a width W18 extending perpendicular to its height H18 and its length L18. As best seen in FIG. 1, each lamella 18 is disposed between opposite sides or surfaces 19 of the tread within the tread thickness. It is appreciated that any such lamella can be arranged in any desired configuration within the tread, such as the length of the lamella extending in a direction of the length of the tread.
    [0022] With respect specifically to lamellas, as noted above, particular embodiments of these treads include a lamella having a length extending between opposite end ends of the lamella, a height, a width, and a thickness that is variable across length and width. coverslip height. Variability in thickness is provided by a lamella portion disposed between the opposite end ends defining the length of the lamellae having a thickened portion extending at least partially around a perimeter of a thin portion. It is appreciated that the coverslip may have a plurality of coverslip portions having thick and thin portions as described. For example, in certain embodiments, the coverslip portion includes a first coverslip portion having one having a thick first portion extending at least partially around a perimeter of a thin first portion and a second coverslip portion having a thick second portion. extending at least partially around a perimeter of a thin second portion, the first lamella portion spaced from the second lamella portion along the length of the lamella. In certain embodiments, the first thick portion extends substantially along two (2) sides of the first thin portion, 50% around the first thin portion, substantially along three (3) sides of the first thin portion, at least 75 % around the first thin portion, or substantially around the first thin portion. Additionally, or alternatively, in other embodiments, the second thin portion extends substantially along two (2) sides of the second thin portion, 50% around the second thin portion, substantially along three (3) sides of the second thin portion. thin portion, at least 75% around the second thin portion, or substantially around the second thin portion. In certain cases, a first facing upward void feature (described in detail below) is disposed between the first and second coverslip portions. In other variations the coverslip portion includes a third coverslip portion, the third coverslip portion having a thick third portion extending at least partially around a perimeter of a thin third portion (such as any manner described above in association with the first and second coverslip portions), the third coverslip portion being spaced from the first and second coverslip portions along the length of the coverslip, where the second upwardly facing void feature is disposed between the second and third coverslip portions. coverslip, where the first, second and third thin portions together form at least 40% of the surface area defining each of the opposite sides of the coverslip. In certain cases, a first upwardly facing portion is disposed between the first and second lamella portions and an upwardly facing second portion is disposed between the second and third lamella portions.
    [0023] By virtue of providing the first and second thick portions separately around at least a portion of the first and second thin portions, respectively, the additional mass provides strength and rigidity allowing the thinner portion to exist in an element to mold the lamella (referred to as a lamella molding element) as the thin portion is better able to withstand the demolding forces that arise when a tire tread (which may or may not form a portion of a tire as a tread The tread can be molded separately from a tire, such as producing a tread for tire retreading operations) is demolded from the lamella molding element. As for the thickness of the coverslip, in particular embodiments, it is understood that each of the first and second thin portions is thinner than each of the first and second thick portions. For example, in certain embodiments, the thick portion is at least 0.4 millimeters (mm) thick, 0.5 mm thick or 0.5 to 1.9 mm thick and the thin portion less than 0.4 mm thick. In particular variations, the thin portion is 0.2 mm or less in thickness or 0.1 to 0.2 mm in thickness. By providing thick portions above 0.4 mm, additional strength and rigidity are provided that can allow a coverslip molding element to generate thinner coverslip portions and/or thinner portions that form a larger coverslip surface area, ie. is, in thicknesses of 0.2 mm or less. As for the size of each of the first and second thin portions, in particular embodiments, the first and second thin portions together form at least 40% of the surface area along or defining each of the opposite sides of the coverslip, the opposite sides being arranged on opposite sides of the coverslip thickness. In other variations, the thin portion forms upwards of at least 60% of the surface area along or defining each of the opposite sides of the coverslip.
    [0024] With reference to FIGS. 2-4, an exemplary embodiment of a slide 18 shown, representing each slide shown in FIG. 1, but which also represents a slide molding element 118 like the slide shown, is a void representing the molded void formed by the slide molding element. In particular cases, coverslip 18 is shown to have a variable thickness T18 extending in the direction of the length and height of the coverslip. The variability in thickness is provided by at least a first lamella portion 20 having one having a thick first portion 21 extending at least partially around a perimeter of a thin first portion 22 and a second lamella portion 24 having a second portion. thick 25 extending at least partially around a perimeter of a thin second portion 26, the first lamella portion spaced from the second lamella portion along the lamella length L18. Obviously, the first thin portion 22 has a thickness T22 that is less than a thickness T21 of the first thickened portion 21, while the second thin portion 26 has a thickness T26 that is less than a thickness T25 of the second thickened portion 25. It is apparent in FIGS. 2 to 3 that the first thick portion 21 completely surrounds the first thin portion 22 along the perimeter PE22, while the second thickened portion 25 completely surrounds the second thin portion 26 along the perimeter PE26. It is also noted that in FIG. 3 it is apparent that the first and second thin portions together form at least 40% of the surface area along the side of the slide shown, where the side shown represents one of the pair of opposite sides defining the slide thickness.
    [0025] To provide additional strength and rigidity to the corresponding lamella molding element, for the purpose of providing areas of reduced thickness to form narrower lamella thicknesses and/or form larger areas or ranges of narrower lamella thicknesses, the coverslip molding includes one or a plurality of thickened molding portions which, in certain cases, comprise one or more upwardly facing void features. In particular embodiments, a first upwardly facing void feature is disposed between and in fluid connection with each of the first and second lamella portions. The first upward facing void feature may comprise any thickness extending in the direction of the thickness of the coverslip, such as being equal to or greater than substantially 0.6 millimeters and being greater than the thickness of the coverslip portion. In certain cases, as mentioned above, the first facing-up void feature is disposed between the first and second coverslip portions. In other cases, as mentioned above, a second upwardly facing void feature is additionally provided, the first upwardly facing void feature is disposed between the first and second lamella portions and the second upwardly facing void feature is disposed between the second and third coverslip portions. In each case, the first and second upwardly facing void portions are spaced apart from each of the terminal ends of the lamella length. It can be said that the first and second upwardly facing void portions are intermediately disposed along the lamella length between the opposite end ends of the lamella length.
    [0026] In additional exemplary embodiments configured to form a first upwardly facing void feature disposed between and in fluid connection with each of the first and second coverslip portions, a second upwardly facing void feature disposed in fluid connection with the first lamella portion, the first lamella portion disposed between the first and second void features facing upwards in a direction of the lamella length, and a third lamella facing upwards disposed in fluid connection with the second lamella portion. lamella, the second lamella portion disposed between the first and third upward facing void features in a direction of the length of the lamella. Fluid connection connotes that the void formed by a void feature is directly connected to the void of a corresponding lamella portion.
    [0027] In either embodiment, any and all of the first, second and third upward facing void features extend, such as along their length, primarily in a direction of the coverslip height (ie, the coverslip depth). This lengthwise extension can occur along any linear or non-linear path. A non-linear path may comprise an arcuate path or an undulating path which may be curvilinear or formed from a plurality of linear segments, such as a zigzag path. When extending primarily in a direction of the coverslip height, when separating the mean direction of extension into vectors extending in the direction of the length, depth, and width of the coverslip, the vector extending in the direction of the coverslip height is greater among the different vectors . In other embodiments, each of the first, second and third upward facing void features may be described as extending primarily in a direction of the thickness of the tread. When a tread is laid across a tire, this main direction is a radial direction. As for the thickness of each of the first, second and third upward facing void features, in particular embodiments, each has a thickness extending in the direction of the lamella thickness greater than the thickness of the first and second lamella portion. In more specific embodiments, the thickness of each of the first, second and third upward facing void features is at least substantially 0.6 millimeters. Other thicknesses can be used, either thinner or thicker. It is also appreciated that each upwardly facing void feature may be formed in any way, such as having any cross-sectional shape, and may extend continuously, discontinuously, or a partial or full height of a lamella.
    [0028] By way of example, with reference again to the embodiment of FIGS. 1-4, a plurality of upwardly facing void features are shown within the lamella 18. In particular, the lamella 18 includes a first upwardly facing void feature 30 disposed between and in fluid connection with each of the first and the second lamella portions 20, 24. The lamella 18 also includes an upwardly facing second void feature 32 disposed in fluid connection with the first lamella portion 20, the first lamella portion disposed between the first and second void features. upward facing 30, 32 in a lamella length direction L18 and a third upwardly facing void feature 34 disposed in fluid connection with the second lamella portion 24, the second lamella portion disposed between the first and third lamella features. face up blanks 30, 34 in a direction of the length of the lamella L18. Each of the first, second and third upwardly facing void features 30, 32, 34 extends primarily in a direction of lamella height H18 and has a thickness T30, T32, T34 extending in the direction of lamella thickness T18 which is greater than the thickness T20, T24 of the first and second coverslip portions. Finally, it is observed that each of the upturned void features 30, 32, 34 has a length L30, L32, L34 extending along a linear path continuously across the full height H18 of the lamella and has a circular or semicircular cross section. . It is noted that the first upward facing void feature is intermediately disposed along the lamella between and spaced from the opposite end ends of the lamella length, while each of the second and third upward facing void features is disposed on each of the opposite end ends of coverslip length. These second and third upward facing void features are optional and may not be included in certain embodiments, whether or not one or more upward facing void features are intermediately disposed along the lamella length.
    [0029] Additional strength and stiffness can also be generated in a corresponding coverslip molding element, particular embodiments of the coverslip molding element include a side void feature extending primarily in a direction of the coverslip length. When extending primarily in the direction of the coverslip length, when separating the average direction of extension into vectors extending in the direction of the length, depth and width of the coverslip, the vector extending in the direction of the coverslip height is greater among the vectors many different. The side void feature has a thickness extending towards the lamella thickness greater than the thickness of the first and second lamella portions. In more specific embodiments, the side void feature has a thickness of at least substantially equal to 0.6 millimeters.
    [0030] It is appreciated that each side void feature may be formed in any manner, such as having any cross-sectional shape, and may extend continuously, discontinuously, or a partial or full length of a lamella. In certain cases, the side void feature at least encompasses each of the first and second coverslip portions in a direction of the length of the coverslip. In other cases, the side void feature extends substantially over the entire length of the lamella. Although the side void feature may or may not be directly connected with any combination of the first, second and third upturned void features, in certain cases the side void feature is in fluid connection with each of the first, second, and second. and third face-up void characteristics. It is also appreciated that the side void feature can be disposed at any location along the height of the coverslip. For example, in certain cases, the lateral void feature is arranged on a lamella bottom in the direction of the tread depth, i.e. submerged below the outer ground engaging side, offset by the lamella height. Although the thickness of the side void feature can be any size, in particular embodiments, it is greater than the thickness of each of the first, second, and third facing up void features.
    [0031] By way of example, with reference to FIGS. 5 to 6, different side void characteristics are shown in different embodiments. In FIG. 5, the side void feature 40 is shown extending primarily in a direction of the lamella length L18. The side void feature 40 has a thickness T40 extending in the direction of slat thickness T18 greater than the thickness T20, T24 of the first and second lamella portions 20, 24. In one embodiment shown, the length L40 of the side void feature 40 spans each of the first and second lamella portions 20, 24 in a direction of the lamella length L18 and extending substantially the entire length of the lamella L18. In so doing, the side void feature 40 is directly connected (in fluid connection) with each of the first, second, and third upwardly void features 30, 32, 34. The side void feature is shown arranged on a bottom of the lamella 18 in the direction of the tread depth. With reference to the embodiment shown in FIG. 6, the thickness T40 of the side void feature 40 is greater than the thickness of each of the first, second and third upturned void features 30, 32, 34 to provide a submerged groove.
    [0032] It is appreciated that any and all lamella features can extend along any linear or non-linear path in any direction to increase the strength and stiffness of the lamella. A non-linear path can form an arcuate or wavy path. A wavy path can form a curvilinear path or a path formed from multiple line segments, such as a zigzag path. For example, in certain cases, the thickness of the coverslip, including the first and second coverslip portions, curls back and forth in a direction of the coverslip thickness when the coverslip extends in a direction of the height or width of the coverslip to form a plurality of ripples. Referring to FIG. 7, an exemplary embodiment shows a coverslip 18 and its thickness T18, along with the first and second coverslip portions 20, 24 curling back and forth in a direction of coverslip thickness or width when the coverslip extends in a height direction. of coverslip (along the corrugated cumin P) to form a plurality of dimples 50. In other variations, the coverslip thickness may also curl (additionally or alternatively) when the coverslip extends in a direction of the length of the coverslip. For any undulating path, each of the plurality of undulations can have any desired amplitude or spacing. For example, in certain cases, the plurality of undulations have an amplitude of at least 1 millimeter (mm) or at least 2 mm and/or are spaced apart by a distance of 3.5 mm or less or at least 1.0 mm.
    [0033] Additionally, surface geometry can be added to any coverslip described or contemplated herein, for the purpose of increasing surface friction between, and improved interlocking between opposite sides of the tread between which the coverslip is disposed. In turn, improvements in wear, dry braking and rolling resistance can be achieved. Additionally, as the new surface geometry increases the rigidity of the lamella forming mold element, a wider lamella forming area along said mold element can be increased and/or the thickness of the lamella forming area can be reduced, each of which can lead to further improvements in wear, dry braking and rolling resistance.
    [0034] As for the surface geometry for application to any desired coverslip and therefore for application to one or both sides or opposing tread surfaces between which the coverslip is disposed and defined, the resulting geometry provides geometry characteristics of surface comprising a plurality of projections and/or recesses that form a planar or non-planar or contoured surface, much like a textured surface, so that opposite sides of the tread between which the lamella is disposed experience high friction when moving relative between the two sides is attempted during tire operation. When applying surface geometry to the coverslip, the surface geometry is also applied to the plurality of ripples or, in other words, to the coverslip body. It is appreciated that projections spaced apart form an interstitial space disposed between the projections, the interstitial space being a recess relative to the projections. Obviously, the opposite is also true, when recesses spaced apart form an interstitial space disposed between the recesses, the interstitial space being a projection relative to the recesses. Therefore, projections and recesses are used with reference to each other and not as to how each is formed along a surface. Additionally, it is observed that a lamella projection is associated with a corresponding recess on one of the opposite sides or surfaces and vice versa. In certain embodiments, surface geometry features are formed so that surface geometry features disposed on opposite sides generally interlock, such as when opposite sides are mirrored opposite each other, for example.
    [0035] With reference to FIGS. 8 to 10, surface geometry features comprising a plurality of projections 60 and corresponding recesses 62 are shown along one of the sides or opposite surfaces 19 of the tread 10 between which the lamella 18 is disposed and defined. The plurality of projections 60 and recesses 62 are spaced along the length and height of the lamella. In the variation shown, the projections and recesses are evenly spaced apart, although it will be appreciated that in other variations, the projections and/or recesses may be evenly or non-uniformly spaced as desired. Although the arrangement of projections 60 and recesses 62 is shown to form a smooth or rounded contoured surface, it is contemplated that more defined projections and/or recesses can be provided so that the surface is not smoothly contoured, such as when the projections form cylinders, pointed rectangles or cones, for example. In particular embodiments, the smoothly contoured or rounded surface shown in FIGS. 8 to 10 comprising a plurality of evenly spaced projections 60 and recesses 62 represented by a function of f(x,y) = A*sin(B*x)*sin(C*y), at least portions thereof, wherein A, B and C are scaling factors. In particular, B and C control the period or spacing between bosses and recesses, while A controls the projection amplitude and recess depth with B and C. The surface generated by this function, which is also represented in the figures, generates a Egg carton type surface. The smooth or rounded contoured surface is also described as extending along a wavy path in two perpendicular directions at particular locations. Therefore, by varying A, B and C as desired, the surface geometry described in this document can be obtained by those skilled in the art using said formula. In particular embodiments, the plurality of projections 60 are spaced from the middle of one projection to the middle of an adjacent projection, or from peak to peak, and has a height (also referred to as an amplitude) measuring 0.025 to 0.375 millimeters (mm) or 0.025 to 0.25 mm in other variations. Height or amplitude is measured from the base or bottom of the projection. In certain embodiments, the plurality of projections are spaced apart by a distance that is less than twice the amplitude AP1 of the first path P1 along which the coverslip thickness undulates most generally. Twice the amplitude means the amplitude multiplied by two (2), where the amplitude or height is measured from the bottom to the bottom of the projection. In more particular variations, the projections and recesses are arranged along an undulating path forming a plurality of undulations having a period (which is a spacing from the middle of a projection to the middle of an adjacent projection, or from peak to peak ) from 0.1 to 3.0 mm, 0.1 to 2.0 mm or 0.1 to 1.0 mm and a range of 0.025 to 0.375 mm or 0.025 to 0.250 in other variations. In these modalities, twice the amplitude measures the distance between opposite peaks along the swell within a single period. It is appreciated that dimples can be formed along the surface without impacting the other side of the coverslip, or the coverslip thickness can undulate along the corrugated path so that when a projection is formed on one side of the coverslip, a recess is formed opposite the projection on the other side of the coverslip.
    [0036] With continued reference to FIGS. 8 to 10, amplitude AS and period PS are shown for the undulating path forming the projections 60 and recesses 62 along the lamella or adjacent tread surface, relative to the undulating path P1 along which the thickness coverslip or coverslip body extends. The amplitude and period of the wavepath P1 are represented as AP1 and PP1, respectively. An arrangement of projections and recesses can also be described as being arranged in an alternating projection-recess arrangement along the length and height of the lamella, so that the opposite sides of the tread are arranged in a coincident configuration. Additionally, an arrangement of projections and recesses can be described as being arranged in an alternating arrangement within a plurality of rows, where adjacent rows are shifted relative to one another, so that each projection in any row is disposed adjacent to a recess in each adjacent row (columns).
    [0037] It is appreciated that any one or a plurality of the sipes described herein may be molded into a tire tread in a method of forming a tire tread using a similarly formed sipe molding element. In the method, a tire tread has a length, a width and a thickness as described above. In particular embodiments, the method comprises the step of molding into the tread a lamella and a void feature of any variation described in this document. As noted above, a lamella molding element may take the form of the void to be formed in the tread, as shown in any exemplary embodiment of FIGS. 1 to 10. Additional steps may include removing the coverslip molding element to provide a similarly formed void.
    [0038] It is appreciated that any tread discussed herein may be disposed along an annular pneumatic tire or it may be formed separately from a tire as a tire component for later installation into a tire casing in accordance with any known technique or process of those skilled in the art. For example, the treads discussed and cited in this document can be molded from an original new tire or can be formed as a retread for later installation onto a tire casing used during retread operations. Therefore, when referencing the tire tread, a longitudinal direction of the tire tread is synonymous with a circumferential direction of the tire when the tread is installed on a tire. Likewise, a tread width direction is synonymous with an axial tire direction or a tire width direction when the tread is installed on a tire. Finally, a tread thickness direction is synonymous with a radial tire direction when the tread is installed on a tire. It is understood that the inventive tread can be employed on any known tire, which can comprise a pneumatic or non-pneumatic tyre, for example.
    [0039] It is appreciated that any of the tread features discussed in this document may be formed into a tire tread by any desired method, which may comprise any manual or automated process. For example, treads can be molded, where any or all of the discontinuities therein can be molded with the tread or later cut into the tread using any manual or automated process. It is also appreciated that either or both of the pair of opposing discontinuities may be originally formed together, and in fluid communication, with the outer ground engagement side of the tread or may be submerged below the ground engagement side external of the tread, to later form a tread element after a thickness of the tread has been worn away or otherwise removed during the life of the tyre.
    权利要求:
    Claims (16)
    [0001]
    1. Tire tread, characterized in that it comprises: a length extending in a lengthwise direction, the lengthwise direction being a circumferential direction when the tread is disposed on a tire; a width extending in a lateral direction, the lateral direction being perpendicular to the lengthwise direction; a thickness extending in a depth direction from an outer side of engagement with the tread floor, the depth direction being perpendicular to both direction along the length and direction towards the width of the tread; a coverslip having a length extending between opposite end ends of the coverslip, a height and thickness that is variable across the length and height of the coverslip, where the lamella thickness includes a first lamella portion disposed between opposite end ends defining the length of the lamella and having a first thick portion extending at least partially around a perimeter of a thin first portion, the first portion being thicker than the first thin portion measured in a direction of the thickness of the coverslip, and a second flap portion disposed between the terminal end. opposite defining the length of the coverslip and having a second thick portion extending at least partially around a perimeter of a second thin portion, the second thick portion being thicker than the second thin portion, measured in the direction of the coverslip thickness, where each of the first and second thin portions are substantially 0.2 millimeters or less in thickness and where the first and second thin portions together form at least 40% of a surface area along an opposite side of the coverslip, the opposite sides being disposed on opposite sides of the coverslip thickness; a first upwardly facing void feature disposed between and in fluid connection with ca. of one of a first and second coverslip portions; the first upward facing void feature extending mainly in a direction of the height of the coverslip, the first upward facing void feature having a thickness extending in the direction of the equal lamella thickness or greater than substantially 0.6 millimeters and being greater than the thickness of the coverslip portion.
    [0002]
    2. Tire tread, according to claim 1, characterized by the fact that each of the first and second thick portions are at least 0.5 millimeters thick.
    [0003]
    A tire tread according to any one of claims 1 or 2, characterized in that it comprises: a second upwardly facing void feature disposed along the sipe portion between the opposite end ends defining the sipe length and in fluid connection with one of the first and second lamella portions, the second upwardly facing void feature extending mainly in a direction of the height of the lamella, the second upwardly facing void feature having a thickness extending in the direction of the thickness of the coverslip equal to or greater than substantially 0.6 millimeters and being greater than the thickness of one of the first and second coverslip portions.
    [0004]
    4. Tire tread according to claim 3, characterized in that the flap portion includes a third flap portion, the third flap portion having a thick third portion extending at least partially around a perimeter of a thin third portion, the third lamella portion being spaced from the first and second lamella portions along the lamella length, where the second upwardly facing void feature is disposed between the second and third lamella portions, where the first, second and third thin portions together form at least 40% of the surface area defining each of the opposite sides of the coverslip.
    [0005]
    A tire tread according to any one of claims 1 or 2, characterized in that it comprises: a second upwardly facing void feature arranged in fluid connection with the first lamella portion, the first lamella portion disposed between the first and second upwardly facing void features in a lamella length direction; a third upwardly facing void feature disposed in fluid connection with the second lamella portion, the second lamella portion disposed between the first and the third upward facing void features in a slat length direction; each of the second and third upward facing void features extending mainly in a slat height direction, each of the second and third facing void features. top having a thickness extending in the direction of the coverslip thickness equal to or greater than substantially 0.6 millimeters and being greater than and the thickness of each of the first and second coverslip portions.
    [0006]
    A tire tread according to any one of claims 1 to 5, characterized in that it comprises: a side void feature extending mainly in a direction of the length of the lamella, the side void feature having an extending thickness in the direction of coverslip thickness equal to or greater than substantially 0.6 millimeters and being greater than the thickness of the first and second coverslip portions.
    [0007]
    7. Tire tread according to claim 6, characterized by the fact that the side void feature is arranged on a bottom of the lamella in the direction of the tread depth.
    [0008]
    8. Tire tread according to claim 7, characterized in that it further comprises: a side void feature extending primarily in one direction of the length of the lamella, the side void feature having a thickness that extends extends in the direction of the lamella thickness equal to or greater than substantially 0.6 millimeters and being greater than the thickness of each of the first, second and third upward facing void features.
    [0009]
    Tire tread according to any one of claims 6 to 8, characterized in that the side void feature at least encompasses each of the first and second sipe portions in a direction of the sipe length.
    [0010]
    10. Tire tread according to any one of claims 6 to 9, characterized in that the side void feature substantially extends over the entire length of the lamella.
    [0011]
    A tire tread according to claim 10, characterized in that the side void feature is in fluid communication with each of the first, second and third upward facing void features.
    [0012]
    12. Tire tread according to any one of claims 1 to 11, characterized in that the lamella thickness undulates back and forth forming a plurality of undulations in a direction of the height and/or width of the lamella to form a plurality of ripples.
    [0013]
    13. Tire tread according to claim 12, characterized in that each of the plurality of undulations has an amplitude of at least 1 millimeter and/or where the plurality of undulations is spaced by a distance of at least 1.0mm measured peak to peak.
    [0014]
    14. Tire tread according to claim 1, characterized in that the first upwardly facing void feature extends a substantial height from each of the first and second sipe portions, where the thick first portion extends. extends substantially around a perimeter of the first thin portion, and where the second thick portion extends substantially around a perimeter of the second thin portion.
    [0015]
    15. Tire tread according to claim 4, characterized in that the first upwardly facing void feature extends a substantial height from each of the first and second flap portions, where the second facing void feature upwardly extends a substantial height of each of the second and third coverslip portions, where the thick first portion extends substantially around a perimeter of the first thin portion, where the second thick portion extends substantially around a perimeter. of the second thin portion, and where the third thick portion extends substantially around a perimeter of the third thin portion.
    [0016]
    16. Tire tread according to claim 5, characterized in that the first upwardly void feature extends to a substantial height from each of the first and second sipe portions, where the second flap feature upward facing void extends a substantial height of the first lamella portion, where the third void feature extends a substantial height of the second lamella portion, wherein the thick first portion extends substantially around a perimeter of the first. thin portion, and where the second thick portion extends substantially around a perimeter of the second thin portion.
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112017006284B1|2021-06-08|variable thickness coverslips with multiple areas of reduced thickness
    US20160297252A1|2016-10-13|Evolving tread for a tire
    EP2342069B1|2014-02-26|Molded tire tread with an undulated sipe
    EP3206893B1|2021-01-27|Improved tire tread with sipe
    BRPI0903293B1|2020-10-13|tire having a tire tread
    US10953700B2|2021-03-23|Tread for heavy-goods vehicle tire
    KR20070113984A|2007-11-29|Pneumatic tire with tread siping
    GB1573223A|1980-08-20|Tyre tread
    JP6069709B2|2017-02-01|Pneumatic tire tread
    US20170021675A1|2017-01-26|Method for forming a tire having a zero thickness sipe and tire obtained thereby
    US20180272637A1|2018-09-27|Hybrid sipes and methods for forming a tire tread
    US20140261938A1|2014-09-18|Variable height grooves in multiple wear layer treads for retreaded tires
    CN108883670B|2021-06-22|Egg carton sidewall features for sipes
    CN108367629B|2021-03-12|Tire tread comprising incisions
    JP6762266B2|2020-09-30|Pneumatic tires
    EP3335909B1|2021-10-13|A pneumatic tire, a tread band, and a tread block comprising a sipe, and a lamella plate for the manufacture thereof
    US20110186199A1|2011-08-04|Pneumatic Tire
    US20190263188A1|2019-08-29|Tire treads having discontinuities extending depthwise along non-linear paths
    BR102013019706B1|2021-10-05|PNEUMATIC TIRE HAVING A TIRE TREAD
    CN111655514A|2020-09-11|Pneumatic tire
    KR100897937B1|2009-05-18|Heavy-duty rib-typed pneumatic tire with improved sipe structure
    WO2016054244A1|2016-04-07|Tire treads having a zero thickness sipe
    同族专利:
    公开号 | 公开日
    CN106852135B|2019-06-14|
    JP2017531584A|2017-10-26|
    EP3201011A1|2017-08-09|
    JP2017534512A|2017-11-24|
    BR112017006284A2|2018-11-06|
    WO2016053307A1|2016-04-07|
    CN106794649B|2019-11-01|
    US10882362B2|2021-01-05|
    EP3200987A1|2017-08-09|
    WO2016054278A1|2016-04-07|
    US20170246820A1|2017-08-31|
    BR112017006268A2|2018-11-06|
    CN106794649A|2017-05-31|
    US10773556B2|2020-09-15|
    EP3200987B1|2020-01-15|
    CN106852135A|2017-06-13|
    CA2962640C|2020-04-28|
    EP3201011B1|2019-08-07|
    CA2962640A1|2016-04-07|
    US20170225517A1|2017-08-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2732589A|1956-01-31|steadmam |
    US1413190A|1921-03-01|1922-04-18|Rapson Frederick Lionel|Resilient wheel for vehicles|
    US1509259A|1923-04-10|1924-09-23|Lambert Tire & Rubber Co|Method and apparatus for manufacturing cushion tires|
    US2121871A|1935-07-25|1938-06-28|Us Rubber Prod Inc|Tire tread|
    US2121955A|1936-06-13|1938-06-28|Us Rubber Prod Inc|Pneumatic tire tread|
    US2264767A|1939-08-23|1941-12-02|Goodrich Co B F|Tire tread|
    US2327057A|1939-08-23|1943-08-17|Goodrich Co B F|Tire tread|
    US2637362A|1950-07-14|1953-05-05|Us Rubber Co|Stone-ejecting tire tread|
    US2696863A|1951-06-20|1954-12-14|Us Rubber Co|Tire tread|
    US3115919A|1962-04-27|1963-12-31|Armstrong Rubber Co|Tire tread|
    US3373790A|1965-09-14|1968-03-19|Uniroyal Inc|Pneumatic tire tread|
    GB1275734A|1968-06-29|1972-05-24|Dunlop Holdings Ltd|Improvements in or relating to pneumatic tyres|
    US3608602A|1968-12-03|1971-09-28|Uniroyal Inc|Stone rejecting tire tread and mold insert therefor|
    DE2024279A1|1969-09-12|1971-03-18|VEB Reifenkombinat Furstenwalde, χ 1240 Furstenwalde|Tread profiling for vehicle tires and device for producing the same|
    US3770040A|1971-09-15|1973-11-06|De Cicco M Augusta|Tire with safety indicator means|
    FR2235811B1|1973-07-05|1976-05-07|Michelin & Cie|
    JPS5338412B2|1973-08-31|1978-10-16|
    US3945417A|1974-03-11|1976-03-23|Harrelson Rubber Company|Lugged vehicle tire, and method of building same|
    GB2061837A|1979-10-31|1981-05-20|Dunlop Ltd|Tyre treads|
    US4574856A|1984-07-18|1986-03-11|The Goodyear Tire & Rubber Company|Tread for a pneumatic tire|
    JPH0355322B2|1985-05-14|1991-08-23|
    IT1185117B|1985-06-26|1987-11-04|Pirelli|TIRE FOR VEHICLE WHEELS WITH LOW ROLLING RESISTANCE TREAD|
    JPS62268707A|1986-05-19|1987-11-21|Bridgestone Corp|Pneumatic radial tire having excellent motion property in all weathers|
    FR2612129B1|1987-03-10|1989-09-29|Michelin & Cie|TREAD FOR RADIAL TIRES OF WHICH THE RELATED ELEMENTS ARE INCORPORATED WITH BROKEN OR CORRUGATED LINE TRACKS IN THE SENSE OF THEIR DEPTHS|
    JPH07115570B2|1987-03-11|1995-12-13|株式会社ブリヂストン|Pneumatic tire|
    JP2619045B2|1988-03-29|1997-06-11|株式会社ブリヂストン|Precured tread for tire and tire using the same|
    JPH0253608A|1988-08-12|1990-02-22|Sumitomo Rubber Ind Ltd|Pneumatic radial tire|
    JPH0260805A|1988-08-25|1990-03-01|Sumitomo Rubber Ind Ltd|Pneumatic radial tire|
    FR2641501B1|1989-01-10|1991-03-08|Michelin & Cie|TIRE TREAD FOR WINTER TRAVEL|
    JPH02241806A|1989-03-15|1990-09-26|Bridgestone Corp|Pneumatic tire having sipes with gap difference and sipe forming blade of tire mold|
    JPH02303908A|1989-05-18|1990-12-17|Toyo Tire & Rubber Co Ltd|Pneumatic tire provided with sipe having part different in width|
    JPH02310108A|1989-05-24|1990-12-25|Toyo Tire & Rubber Co Ltd|Tread skin of pneumatic tire|
    JP2754040B2|1989-05-30|1998-05-20|東洋ゴム工業株式会社|Mold for pneumatic tire molding|
    JPH0390317A|1989-08-31|1991-04-16|Ohtsu Tire & Rubber Co Ltd :The|Sipe forming member for forming block tire with sipe|
    JPH03112705A|1989-09-26|1991-05-14|Bridgestone Corp|Studless pneumatic radial tire|
    JP2757051B2|1989-12-19|1998-05-25|横浜ゴム株式会社|Tire mold|
    JPH03279006A|1990-03-29|1991-12-10|Yokohama Rubber Co Ltd:The|Pneumatic radial tire and manufacture thereof|
    JPH089204B2|1990-07-25|1996-01-31|住友ゴム工業株式会社|Raw tire forming method and belt forming drum|
    DE69213161T2|1991-11-01|1997-01-09|Bridgestone Corp|Pneumatic tire, mold and manufacturing process|
    FR2683771B1|1991-11-18|1994-01-07|Michelin & Cie|TREAD HAVING GROOVES WITH WALLS WITH INCISIONS.|
    JPH05169913A|1991-12-19|1993-07-09|Sumitomo Rubber Ind Ltd|Pneumatic tire|
    DE69327958T2|1992-07-02|2000-10-05|Oliver Rubber Co|METHOD AND DEVICE FOR RENEWING TIRES|
    JP3095301B2|1992-11-09|2000-10-03|東洋ゴム工業株式会社|Radial tires for heavy loads|
    JP2774775B2|1993-08-23|1998-07-09|住友ゴム工業株式会社|Pneumatic tire|
    FR2722144B1|1994-07-05|1996-09-27|Michelin & Cie|TIRE TREAD|
    JPH08188014A|1995-01-11|1996-07-23|Bridgestone Corp|Pneumatic tire for heavy load|
    DE19506697A1|1995-02-25|1996-08-29|Continental Ag|Forming fine cuts in tyre tread esp. for winter use in snow and ice|
    ES2140785T3|1995-03-29|2000-03-01|Bridgestone Corp|PNEUMATIC COVER.|
    EP0820885A3|1996-07-24|1998-07-08|Bridgestone Corporation|Pneumatic tire|
    FR2763892A1|1997-05-30|1998-12-04|Michelin & Cie|SCULPTURE AND MOLD FOR TIRE TREAD|
    US6439284B1|1997-10-03|2002-08-27|The Goodyear Tire & Rubber Company|Tread for a pneumatic tire including aquachannel|
    US6264453B1|1997-10-27|2001-07-24|The Goodyear Tire & Rubber Company|Article and method for composite tire mold blades|
    US6123130A|1997-11-11|2000-09-26|Bridgestone/Firestone, Inc.|Tire having improved wet stopping capability|
    JP3822338B2|1997-11-19|2006-09-20|株式会社ブリヂストン|Pneumatic tire|
    US6196288B1|1997-12-15|2001-03-06|Michelin Recherche Et Technique S.A.|Siping geometry to delay the onset of rib edge wear in truck tires|
    WO2001002147A1|1997-12-19|2001-01-11|Bridgestone Corporation|Mold for vulcanization and tire vulcanization method|
    FR2772663A1|1997-12-24|1999-06-25|Michelin & Cie|METHOD AND MOLDING ELEMENT FOR MOLDING A CUT IN A TIRE TRUCK|
    WO1999048707A1|1998-03-25|1999-09-30|The Goodyear Tire & Rubber Company|Tire tread and mold for making treads|
    US6102092A|1998-06-17|2000-08-15|Michelin Recherche Et Technique S.A.|Tire having sacrificial bridging|
    JP2000102925A|1998-09-28|2000-04-11|Ngk Fine Mold Kk|Sipe forming skeleton and production of tire mold|
    ES2190287T3|1998-10-29|2003-07-16|Pirelli|TIRE AND ITS BEARING BAND.|
    WO2000030874A2|1998-11-19|2000-06-02|Pirelli Pneumatici S.P.A.|Tyre for vehicle wheels|
    US6382283B1|1998-12-23|2002-05-07|Pirelli Pneumatici S.P.A.|Tire for vehicle wheels including sipes|
    JP3359000B2|1999-02-18|2002-12-24|住友ゴム工業株式会社|Pneumatic tire|
    JP2000247113A|1999-02-25|2000-09-12|Bridgestone Corp|Pneumatic tire|
    FR2790717A1|1999-03-10|2000-09-15|Michelin Soc Tech|TREAD AND MOLD SCULPTURE|
    US6467517B1|1999-06-15|2002-10-22|Michelin Recherche Et Technique S.A.|Tire having sacrificial bridging|
    US6412531B1|1999-07-15|2002-07-02|Michelin Recherche Et Technique S.A.|Tire tread having groove walls with compound contours|
    JP2001063323A|1999-08-26|2001-03-13|Yokohama Rubber Co Ltd:The|Pneumatic tire|
    JP4327962B2|1999-11-04|2009-09-09|株式会社ブリヂストン|Pneumatic tire|
    FR2801531A1|1999-11-25|2001-06-01|Michelin Soc Tech|TREAD MOLD|
    JP4615655B2|2000-01-17|2011-01-19|株式会社ブリヂストン|Pneumatic tire|
    RU2269426C2|2000-11-13|2006-02-10|Сосьете Де Текноложи Мишлен|Pneumatic tire tread cap and recapper|
    DE60214915T2|2001-02-20|2007-04-19|Société de Technologie Michelin|Mold and method for molding a tire tread|
    US20020134202A1|2001-03-23|2002-09-26|Andre Domange|Composite blade|
    JP2003182314A|2001-12-21|2003-07-03|Bridgestone Corp|Pneumatic tire|
    JP3948961B2|2002-01-21|2007-07-25|株式会社ブリヂストン|Radial tire|
    AT325000T|2002-05-15|2006-06-15|Michelin Soc Tech|SCALABLE RUNNING STRIP|
    JP2004009886A|2002-06-06|2004-01-15|Yokohama Rubber Co Ltd:The|Pneumatic tire|
    JP4316337B2|2003-09-29|2009-08-19|横浜ゴム株式会社|Pneumatic tires for snowy and snowy roads|
    US7143799B2|2003-11-20|2006-12-05|The Goodyear Tire & Rubber Company|Three-dimensional sipes for treads|
    JP3898692B2|2003-12-03|2007-03-28|住友ゴム工業株式会社|Pneumatic tire|
    US7207364B2|2004-02-23|2007-04-24|Continental Tire North America, Inc.|Radial tire with tread pattern having four or five circumferential ribs|
    JP2005262973A|2004-03-17|2005-09-29|Bridgestone Corp|Pneumatic tire, sipe forming blade, and tire molding die having the sipe forming blade|
    JP4294532B2|2004-04-09|2009-07-15|株式会社ブリヂストン|Pneumatic tire|
    US20050274448A1|2004-06-10|2005-12-15|Lettieri Joseph C|Tire surface preparation and apparatus for transponder installation|
    FR2871735B1|2004-06-16|2006-08-04|Michelin Soc Tech|ROLLER BAND HAVING ZIGZAG AND BLADE INCISIONS FOR MOLDING SUCH INCISIONS|
    US7249620B2|2004-07-12|2007-07-31|The Goodyear Tire & Rubber Company|Pneumatic tire|
    US7467652B2|2004-08-06|2008-12-23|The Goodyear Tire & Rubber Company|Three-dimensional tread sipes and mold blade for forming three-dimensional tread sipes|
    JP4589680B2|2004-08-10|2010-12-01|株式会社ブリヂストン|Pneumatic tire|
    FR2891489B1|2005-10-04|2007-12-07|Michelin Soc Tech|MOLD FOR TIRE TREAD.|
    US7779876B2|2005-10-19|2010-08-24|Bridgestone Americas Tire Operations, Llc|Reinforced blade for use in a vulcanization mold to form a sipe in a tire|
    US7793692B2|2005-10-31|2010-09-14|The Goodyear Tire & Rubber Company|Pneumatic tire tread having sipe that devolves into groove as tread wears|
    DE102006010050A1|2006-03-04|2007-09-06|Continental Aktiengesellschaft|Mold for shaping the profile of the tread of a pneumatic vehicle tire and pneumatic vehicle tires|
    FR2898298B1|2006-03-08|2010-08-20|Michelin Soc Tech|TIRE TREAD INCISION COMPRISING BLOCKING PARTS.|
    US7322876B2|2006-03-28|2008-01-29|Michelin Recherche Et Technique S.A.|Apparatus for preparing a tire surface for application of a patch|
    US7546861B2|2006-06-26|2009-06-16|The Goodyear Tire & Rubber Company|Tire with tread having crossed configuration sipe|
    JP4881697B2|2006-11-08|2012-02-22|株式会社ブリヂストン|Pneumatic tire|
    FR2909588B1|2006-12-07|2009-01-16|Michelin Soc Tech|TREAD BAND WITH DOUBLE ORIENTATION INCISIONS.|
    US7566213B2|2006-12-21|2009-07-28|The Goodyear Tire & Rubber Company|Flexible enrobed molding device for manufacturing a sunken groove in a tire tread|
    US7507078B2|2006-12-21|2009-03-24|The Goodyear Tire & Rubber Company|Flexible molding device for molding a sunk groove, a sunk blade, and a large keyhole sipe in tire tread|
    US20080149237A1|2006-12-21|2008-06-26|Cambron Anne-France Gabrielle|Pneumatic tire|
    US20080163970A1|2007-01-09|2008-07-10|Toyo Tire & Rubber Co., Ltd.|Pneumatic tire and a tire mold for molding a tire|
    US20090065115A1|2007-09-11|2009-03-12|Continental Tire North America, Inc.|Pneumatic tire with decoupling groove|
    CN101148020A|2007-11-05|2008-03-26|北京多贝力轮胎有限公司|Novel tyre renovating sander|
    FR2924981B1|2007-12-17|2009-11-27|Michelin Soc Tech|TIRE TREAD FOR SNOW TIRE.|
    US20090159167A1|2007-12-20|2009-06-25|Daniel Scheuren|Pneumatic tire tread with sipes and mold blade|
    FR2926037B1|2008-01-09|2009-12-18|Michelin Soc Tech|DEVICE FOR ROLLING BAND.|
    US9033013B2|2008-06-06|2015-05-19|Continental Tire North America, Inc.|Undercut stone bumper structure for vehicle tire groove|
    EP2463121B1|2008-09-11|2016-06-22|Michelin Recherche et Technique S.A.|Variable surface area tire tread|
    BRPI0823159A2|2008-10-03|2015-06-23|Société De Technologie Michelin E Michelin Rech Et Tech S A|Undulating mold element for tire tread and coverslip|
    DE102008055496A1|2008-12-09|2010-06-10|Continental Reifen Deutschland Gmbh|Vehicle tires|
    FR2940185B1|2008-12-22|2010-12-17|Michelin Soc Tech|ROLLER BAND WITH IMPROVED DRAINAGE VOLUME|
    JP5270417B2|2009-03-26|2013-08-21|東洋ゴム工業株式会社|Pneumatic tire|
    EP2440417A4|2009-06-12|2013-10-30|Michelin & Cie|Progressive tire mold element with undulation on its upper member and tire formed by the same|
    US8393365B2|2009-12-11|2013-03-12|The Goodyear Tire & Rubber Company|Tire tread having serrated grooves|
    US8267679B2|2009-12-17|2012-09-18|The Goodyear Tire & Rubber Company|Mold device for forming grooves in tire shoulder|
    FR2961741B1|2010-06-25|2012-08-03|Michelin Soc Tech|LAMELLE FOR A TRIM OF A MOLD FOR THE VULCANIZATION OF A TIRE TREAD OF A TIRE|
    CN103180152B|2010-10-29|2016-03-09|米其林集团总公司|There is the tire protector of multiple wearing layer|
    FR2971732B1|2011-02-17|2013-02-01|Michelin Soc Tech|TIRE TREAD FOR PNEUMATIC HEAVY DUTY TRAILER TYPE AND MOLDING ELEMENT|
    US9150057B2|2011-07-13|2015-10-06|Compagnie Generale Des Establissements Michelin|Tire having tread with hidden tread blocks|
    HU1100389A2|2011-07-19|2013-03-28|Tauform Abroncsformagyarto Kft|Blades for producing sipes, tires with sipes, method for forming blades|
    DE102011053743A1|2011-09-19|2013-03-21|Continental Reifen Deutschland Gmbh|Vehicle tires|
    RU2667710C2|2013-02-28|2018-09-24|Пирелли Тайр С.П.А.|Winter tire|
    US9463672B2|2013-08-20|2016-10-11|The Goodyear Tire & Rubber Company|Pneumatic tire tread with sipes and mold blade|
    US20170021675A1|2013-11-26|2017-01-26|Compagnie Generale Des Etablissements Michelin|Method for forming a tire having a zero thickness sipe and tire obtained thereby|
    WO2015080772A1|2013-11-27|2015-06-04|Compagnie Generale Des Etablissements Michelin|Method of moulding tire treads having a zero thickness sipe and tire obtained thereby|
    JP2017531584A|2014-09-30|2017-10-26|コンパニー ゼネラール デ エタブリッスマン ミシュラン|Stiffeners for sipe molded parts|JP2017531584A|2014-09-30|2017-10-26|コンパニー ゼネラール デ エタブリッスマン ミシュラン|Stiffeners for sipe molded parts|
    WO2017058226A1|2015-09-30|2017-04-06|Compagnie Generale Des Etablissements Michelin|Variable thickness sipes|
    ES2794792T3|2016-11-17|2020-11-19|Aeolus Tyre Co Ltd|Tread|
    DE102017203166A1|2017-02-27|2018-08-30|Continental Reifen Deutschland Gmbh|vehicle tires|
    FR3065902B1|2017-05-05|2020-11-13|Michelin & Cie|SET OF MOLDING ELEMENTS FOR PNEUMATIC MOLD|
    US11090888B2|2017-11-30|2021-08-17|Compagnie Generale Des Etablissements Michelin|Molding element comprising a particular assembly means|
    WO2019106540A1|2017-11-30|2019-06-06|Compagnie Générale Des Établissements Michelin|Moulding element with a plurality of enlargements|
    JP2019135124A|2018-02-05|2019-08-15|住友ゴム工業株式会社|tire|
    DE102018204024A1|2018-03-16|2019-09-19|Continental Reifen Deutschland Gmbh|Rib or lamellar element, profile ring segment and method for producing a profile ring segment|
    FR3090484A3|2018-12-21|2020-06-26|Michelin & Cie|Truck tire tread with improved incisions.|
    WO2020128281A1|2018-12-21|2020-06-25|Compagnie Generale Des Etablissements Michelin|Tyre tread for a heavy goods vehicle tyre having improved incisions|
    法律状态:
    2019-03-19| B25A| Requested transfer of rights approved|Owner name: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN; (F |
    2020-02-04| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-03-30| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-06-08| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 30/09/2015, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    WOPCT/US2014/058351|2014-09-30|
    PCT/US2014/058351|WO2016053307A1|2014-09-30|2014-09-30|Stiffeners for sipe-molding members|
    PCT/US2015/053346|WO2016054278A1|2014-09-30|2015-09-30|A tire tread comprising variable thickness sipes with multiple areas of reduced thickness|
    [返回顶部]