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    Pneumatic tire for motorcycle
    1.
    发明授权
    Pneumatic tire for motorcycle 有权

    公开(公告)号：US11780269B2

    公开(公告)日：2023-10-10

    申请号：US16740565

    申请日：2020-01-13

    Applicant: BRIDGESTONE CORPORATION

    Inventor： Junichi Takahashi ,  Mitsunori Uchida

    IPC: B60C11/03 ,  B60C11/13

    CPC classification number: B60C11/0302 ,  B60C11/1323 ,  B60C2011/0372 ,  B60C2200/10

    Abstract: Provided is a motorcycle pneumatic tire in which the wet grip performance is improved while the steering stability during turning is ensured. The motorcycle pneumatic tire includes, on its ground-contact surface: a first inclined groove (21) that extends on a tire width-direction outer side from the vicinity of a tire equator and is inclined in the same direction as a tire rotation direction; and a short groove (22) that is arranged on the extension of a tire width-direction outer end of the first inclined groove (21). The tire width-direction outer end of the first inclined groove is positioned in the vicinity of a point at ¼ of a tread width (TW) from the tire equator on the tire width-direction outer side, while a tire width-direction inner end of the short groove is positioned in a range of ¼ to 5/16 of the tread width (TW) from the tire equator on the tire width-direction outer side; an inclination angle of the first inclined groove with respect to a tire circumferential direction increases toward the tire width-direction outer side; and an angle θA formed by a groove wall of the tire width-direction outer end of the first inclined groove with respect to the direction perpendicular to the tire surface, and an angle θB formed by a groove wall of the tire width-direction inner end of the short groove with respect to the direction perpendicular to the tire surface, satisfy a relationship of θA>θB.

    PNEUMATIC TIRE
    3.
    发明申请
    PNEUMATIC TIRE 审中-公开

    公开(公告)号：US20180134095A1

    公开(公告)日：2018-05-17

    申请号：US15683012

    申请日：2017-08-22

    Applicant: TOYO TIRE & RUBBER CO., LTD.

    Inventor： Yuji Izuhara

    IPC: B60C11/13

    CPC classification number: B60C11/1315 ,  B60C11/01 ,  B60C11/1323 ,  B60C2011/013

    Abstract: A pneumatic tire includes a shoulder land portion and a narrow groove in a tread surface. The narrow groove extends in the tire circumferential direction and sections the shoulder land portion into a main land portion and a sub land portion. A first groove portion extends in parallel to the tire equator surface from the tread surface toward an inner side in a tire radial direction. A second groove portion is provided closer to the inner side in the tire radial direction and the tire equator surface side than the first groove portion, and extends in parallel to the tire equator surface. A connection portion is connected to the first groove portion and the second groove portion. A groove bottom portion is provided in an end portion of the second groove portion and has a widened groove width by depressing a groove wall of the second groove portion.

    PNEUMATIC TIRE
    4.
    发明申请
    PNEUMATIC TIRE 审中-公开

    公开(公告)号：US20180126792A1

    公开(公告)日：2018-05-10

    申请号：US15577769

    申请日：2016-04-19

    Applicant: BRIDGESTONE CORPORATION

    Inventor： Takayuki KURATA

    IPC: B60C11/12 ,  B60C11/13

    CPC classification number: B60C11/124 ,  B60C11/0302 ,  B60C11/0309 ,  B60C11/0316 ,  B60C11/1204 ,  B60C11/1259 ,  B60C11/1272 ,  B60C11/1307 ,  B60C11/1323 ,  B60C2011/0313 ,  B60C2011/1213

    Abstract: Taking a groove side-wall to a position at ½ a groove depth from a tread face of lug groove as a tread-in side first inclined portion, and taking a groove side-wall from the position at ½ groove depth to a groove bottom as a tread-in side second inclined portion, then the following A1 is set less than the following B1. When viewed in cross-section orthogonal to a length direction of the lug groove: A1 is an area of a region enclosed by an imaginary line passing through an end portion on a tread face side of the tread-in side first inclined portion and perpendicular to the tread face, by an imaginary line passing through an end portion on a groove bottom side of the tread-in side first inclined portion and orthogonal to the imaginary line, and by the tread-in side first inclined portion; and B1 is an area of a region enclosed by an imaginary line passing through an end portion on a tread face side of the tread-in side second inclined portion and perpendicular to the tread face, by an imaginary line passing through the deepest portion of the lug groove and parallel to the tread face, and by the tread-in side second inclined portion.

    TIRE GROOVE
    6.
    发明申请
    TIRE GROOVE 审中-公开

    公开(公告)号：US20180056729A1

    公开(公告)日：2018-03-01

    申请号：US15253983

    申请日：2016-09-01

    Applicant: THE GOODYEAR TIRE & RUBBER COMPANY

    Inventor： Austin Gale YOUNG ,  Robert John HERMANN

    IPC: B60C11/13

    CPC classification number: B60C11/13 ,  B60C11/1315 ,  B60C11/1323 ,  B60C11/1353 ,  B60C2011/0341

    Abstract: A tire includes a tread portion having at least one circumferential main groove extending in a circumferential direction of the tire and spaced axially apart from an equator of the tire. The groove has a circumferential profile shape including an inner wall portion extending radially inward from an axially inner edge of the groove, an inner arc portion continuous with the inner wall portion and having a smaller radius of curvature than the inner wall portion, an outer wall portion extending radially inward from an axially outer edge of the groove and having a larger length than the inner wall portion, an outer arc portion continuous with the outer wall portion and having a smaller radius of curvature than the outer wall portion, and a groove bottom portion extending straight from the outer arc portion toward the inner arc portion while being inclined in a radially inward direction whereby the groove bottom portion has a constant radius of curvature.

    Pneumatic Vehicle Tyre
    7.
    发明申请
    Pneumatic Vehicle Tyre 审中-公开

    公开(公告)号：US20170313136A1

    公开(公告)日：2017-11-02

    申请号：US15526596

    申请日：2015-08-03

    Applicant: CONTINENTAL REIFEN DEUTSCHLAND GMBH

    Inventor： Björn-Birk Gläser ,  Charles Henry Boston ,  Andreas Domscheit ,  Oliver Schürmann ,  Ulrich Behr

    IPC: B60C11/04 ,  B60C11/13 ,  B60C11/03

    CPC classification number: B60C11/045 ,  B60C11/0304 ,  B60C11/0309 ,  B60C11/1315 ,  B60C11/1323

    Abstract: A pneumatic vehicle type for passenger vehicles or vans having at least one wide circumferential groove (1, 1′, 1″, 1″′), which runs in the circumferential direction and is bounded on the tread periphery by two edge borders (1a, 1′a, 1″a, 1′″a) which run parallel to one another and linearly, and has a groove base (13, 13′, 13″) as well as two groove edges (9, 10, 9′, 10′, 9″, 10″), wherein elements (11, 12, 11′12′, 11″, 12″) which project on the groove edges (9, 10, 9′, 10′, 9″, 10″) are formed alternately in the circumferential direction on one or other of the groove edges (9, 10, 9′, 10′, 9″, 10″), wherein each projecting element (11, 12, 11′, 12′, 11″, 12″) has a groove edge section (9a, 10a, 9′a, 10′a, 9″a, 10″a) lying opposite on the opposite groove edge (9, 10, 9′, 10′, 9″, 10″), which groove edge section (9a, 10a, 9′a, 10′a, 9″a, 10″a) runs least essentially in the radial direction starting at the edge border (1a, 1′a, 1″a, 1′″a) as far as the groove base (13, 13′, 13″), wherein the groove base (13, 13′, 13″) runs in a meandering or corrugated shape along and between the projecting elements (11, 12, 11′, 12′, 11″, 12″), wherein the projecting elements (11, 12, 11′, 12′, 11″, 12″) are essentially of wedge-like design and are bounded by oblique faces (14, 14′, 14″) which extend in the axial direction as far as the groove base (13, 13′, 13″) and run in the circumferential direction at least essentially over the circumferential extent of the elements (11, 12, 11′, 12′, 11″, 12″), wherein the projecting elements (11, 12; 11′,12′,11″,12″) are provided in at least two different circumferential lengths (L1 to L5, L1′ to L5′; L1″ to L5″) and follow one another according to a specific sequence over the circumference of the circumferential groove (1, 1′, 1″, 1″′).

    Pneumatic tire
    8.
    发明授权
    Pneumatic tire 有权

    公开(公告)号：US09731560B2

    公开(公告)日：2017-08-15

    申请号：US14225485

    申请日：2014-03-26

    Applicant: Sumitomo Rubber Industries, Ltd.

    Inventor： Hirokazu Takano

    IPC: B60C11/13 ,  B60C11/03

    CPC classification number: B60C11/13 ,  B60C11/0309 ,  B60C11/1307 ,  B60C11/1323 ,  B60C11/1392 ,  B60C2011/0358 ,  B60C2011/0365 ,  B60C2011/0367 ,  B60C2011/0369 ,  B60C2011/0372

    Abstract: A pneumatic tire includes a tread portion provided with at least one circumferentially extending main groove, and at least one lateral groove extending from the main groove. The at least one lateral groove comprises a bottom, and at least one stepwise groove wall that includes at least one level part, wherein the number of level part is not more than three. In a cross-sectional view of the lateral groove, a depth Da from a ground contacting surface of the tread portion to a radially innermost level part is in a range of from 50% to 80% a maximum groove depth D4 of the lateral groove, and a width Wa from the radially innermost level part to a groove edge of the stepwise groove wall measured along in a groove width direction is in a range of from 50% to 150% the depth Da.

    Heavy duty tire
    9.
    发明授权
    Heavy duty tire 有权

    公开(公告)号：US09701162B2

    公开(公告)日：2017-07-11

    申请号：US14199388

    申请日：2014-03-06

    Applicant: Sumitomo Rubber Industries, Ltd.

    Inventor： Kaori Tanaka

    IPC: B60C11/13 ,  B60C11/03

    CPC classification number: B60C11/0309 ,  B60C11/0311 ,  B60C11/0316 ,  B60C11/1315 ,  B60C11/1323 ,  B60C2011/0346 ,  B60C2200/06 ,  B60C2200/065

    Abstract: A heavy duty tire includes a tread portion provided with a pair of circumferential main grooves including at least one zigzag groove, lateral grooves extending between the main grooves to form center blocks therebetween, and lug grooves. Each lug groove includes an axially inner portion connecting to the zigzag groove while curving toward a first circumferential direction of the tire. The lug groove has a first groove edge disposed on a side of the first circumferential direction and a second groove edge facing against the first groove edge. The first groove edge is connected to an axially outer groove edge of the zigzag groove. The second groove edge is connected to an axially inner groove edge of the zigzag groove. The lug groove includes a constant groove width, and a groove-bottom width smoothly decreasing axially inward from the tread edge.

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