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    Tread for a heavy-duty vehicle tire
    1.
    发明授权
    Tread for a heavy-duty vehicle tire 有权

    公开(公告)号：US11760134B2

    公开(公告)日：2023-09-19

    申请号：US16757728

    申请日：2018-10-31

    申请人： COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

    发明人： Damien Bardin

    IPC分类号： B60C11/03 ,  B60C11/13 ,  B60C11/12

    CPC分类号： B60C11/0323 ,  B60C11/125 ,  B60C11/1369 ,  B60C2011/1338

    摘要： Tread (1) for a heavy-duty vehicle tire having, when new, a tread surface (10), with at least one evolving cut (2) comprising a part (22) hidden inside the tread which is delimited by opposing walls (221, 222) distant from one another by a maximum width Lc. The part (22) being extended towards the tread surface (10) by a sipe (21), opening into the hidden part (22) to be offset from one of the walls (221, 222) delimiting the hidden part to form a bridge situated radially over said hidden part (22). The tread having a plurality of grooves (4) open when new onto the tread surface (10), these grooves (4) opening into an evolving cut (2) to form a connecting region (41), the tread (1) further comprising, in at least 50% of the connecting regions (41, 42), a protuberance (5) extending over the entire height Hc of the hidden part (22) and over a maximum thickness Ep so as to act as a support for the bridge (211) situated radially over the hidden part (22) in the connecting region (41).

    Pneumatic tire
    2.
    发明授权
    Pneumatic tire 有权

    公开(公告)号：US11701924B2

    公开(公告)日：2023-07-18

    申请号：US16636007

    申请日：2018-07-26

    申请人： The Yokohama Rubber Co., LTD.

    发明人： Kenji Horiuchi

    IPC分类号： B60C11/11 ,  B60C11/12 ,  B60C11/13 ,  B60C11/03

    CPC分类号： B60C11/12 ,  B60C11/125 ,  B60C11/1307 ,  B60C2011/0346 ,  B60C2011/1213 ,  B60C2011/133

    摘要： A pneumatic tire is provided. A tread portion includes shallow grooves formed in a road contact surface of each of shoulder blocks, intermediate blocks, and center blocks, defined by a plurality of longitudinal grooves extending in a tire circumferential direction and a plurality of lateral grooves extending in a tire lateral direction, the shallow groove having a smaller groove depth than the longitudinal groove and the lateral groove. The shallow groove extends along the tire lateral direction, and at least one end thereof communicates with the longitudinal groove or the lateral groove. A contour line of the shallow groove is provided with at least one bend point. A sipe is provided in a flat bottom surface of the shallow groove extending along the shallow groove. Among the shallow grooves, center shallow grooves formed in the center block are each provided with a terminating end portion terminating in the center block.

    Pneumatic Tire
    4.
    发明申请
    Pneumatic Tire 审中-公开

    公开(公告)号：US20180207993A1

    公开(公告)日：2018-07-26

    申请号：US15747405

    申请日：2016-07-08

    申请人： The Yokohama Rubber Co., LTD.

    发明人： Masatoshi Kuriyama

    IPC分类号： B60C11/12 ,  B60C11/03 ,  B60C11/13

    CPC分类号： B60C11/125 ,  B60C11/0304 ,  B60C11/0309 ,  B60C11/1204 ,  B60C11/1259 ,  B60C11/1307 ,  B60C11/1353 ,  B60C11/1392 ,  B60C2011/0346 ,  B60C2011/0348 ,  B60C2011/0372 ,  B60C2011/1213 ,  B60C2011/1361

    摘要： A pneumatic tire comprises main grooves extending in a tire circumferential direction in a tread surface of a tread portion, a pair of the main grooves adjacent in a tire lateral direction having a wave-like shape with periodic oscillation; land portions adjacent to one another in the tire lateral direction formed by the main grooves; lug grooves disposed in a row in the tire circumferential direction in the land portions formed between the wave-like main grooves adjacent to one another in the tire lateral direction, the lug grooves each intersecting the tire circumferential direction and communicating with the main grooves at both ends; and a zigzag narrow groove disposed in a groove bottom of each of the lug grooves, the zigzag narrow groove having a narrower groove width than the lug grooves and having a zigzag shape extending in an extension direction of the lug grooves.

    TIRE
    5.
    发明申请
    TIRE 审中-公开

    公开(公告)号：US20180126793A1

    公开(公告)日：2018-05-10

    申请号：US15804310

    申请日：2017-11-06

    申请人： Sumitomo Rubber Industries, Ltd.

    发明人： Kae ITO

    IPC分类号： B60C11/12 ,  B60C11/03 ,  B60C11/13

    CPC分类号： B60C11/1236 ,  B60C11/0306 ,  B60C11/1204 ,  B60C11/125 ,  B60C11/1369 ,  B60C2011/0346 ,  B60C2011/0353 ,  B60C2011/0365 ,  B60C2011/1213 ,  B60C2011/1254

    摘要： A tire comprises a tread portion 2 comprising blocks 20. At least one of the blocks has a first block wall (25a), a second block wall (25b), and a first region (26a) and a second region (26b) divided by a crossing sipe 30. In a plan view, the first and second block walls (25a) and (25b) are each formed in a convex V-shape so as to have an apex portion 27 protruding toward the outside of the block. The crossing sipe 30 has a first end (28a) positioned on a first side of the apex portion 27 of the first block wall (25a) and a second end (28b) positioned on a second side of the apex portion 27 of the second block wall (25b) in the tire circumferential direction. The first and second regions (26a) and (26b) each have a closed sipe 38 having both ends terminating within the region.

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

    公开(公告)号：US09616714B2

    公开(公告)日：2017-04-11

    申请号：US14243088

    申请日：2014-04-02

    申请人： Sumitomo Rubber Industries, Ltd.

    发明人： Taro Okabe

    IPC分类号： B60C11/13 ,  B60C11/03 ,  B60C11/12

    CPC分类号： B60C11/0309 ,  B60C11/0306 ,  B60C11/033 ,  B60C11/125 ,  B60C2011/0365 ,  B60C2200/06

    摘要： A heavy duty pneumatic tire includes a tread portion provided with at least three circumferential main grooves, and a plurality of lateral grooves extending between adjacent main grooves or between one main groove and a tread edge, to form at least one block row comprising a plurality of blocks. The block row comprises a plurality of pitch elements each of which consists of circumferentially adjacent one lateral groove and one block. The tread portion has a land ratio in a range of from 70% to 80%. The block row comprises a number of pitch elements in a range of from 40 to 50, and each lateral groove has a groove width in a range of from 5% to 15% in relation to a circumferential length of the block in each pitch element.