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    Pneumatic tire
    11.
    发明授权
    Pneumatic tire 有权

    公开(公告)号：US10737533B2

    公开(公告)日：2020-08-11

    申请号：US15519501

    申请日：2015-10-05

    Applicant: c/o The Yokohama Rubber Co., LTD.

    Inventor： Yukihito Yamaguchi ,  Shoei Kakuta ,  Hideki Hamanaka ,  Risa Tauchi ,  Toshiyuki Sato

    IPC: B60C11/11 ,  B60C11/03 ,  B60C11/13

    Abstract: A pneumatic tire includes a plurality of center lug grooves disposed at intervals in a tire circumferential direction that extend crossing a tire equator line and include a first groove turning portion and a second groove turning portion; a plurality of shoulder lug grooves disposed in the intervals between the plurality of center lug grooves in the tire circumferential direction extending outward in the tire width direction, an inner end in the tire width direction being disposed outward of an end of the center lug groove in the tire width direction; a pair of circumferential main grooves to which the ends of the center lug grooves and the inner ends of the plurality of shoulder lug grooves in the tire width direction alternately connect; and a circumferential secondary groove disposed around the entire circumference of the pneumatic tire with a wave-like shape.

    Heavy duty pneumatic tire
    12.
    发明授权
    Heavy duty pneumatic tire 有权

    公开(公告)号：US10322609B2

    公开(公告)日：2019-06-18

    申请号：US15328427

    申请日：2015-05-13

    Applicant: The Yokohama Rubber Co., LTD.

    Inventor： Shoei Kakuta ,  Hideki Hamanaka ,  Yukihito Yamaguchi ,  Risa Tauchi ,  Toshiyuki Sato

    IPC: B60C11/11 ,  B60C11/117 ,  B60C11/13 ,  B60C11/03

    Abstract: A tread pattern is provided with: shoulder lug grooves open at ground contact ends; center lug grooves each having opposite ends; circumferential primary grooves each formed in a wavy shape by connecting ends of the center lug grooves and the inner ends of the shoulder lug grooves in the width direction of the tire; and center blocks defined by the center lug grooves and the pair of circumferential primary grooves. The width of the circumferential primary grooves is smaller than the width of the shoulder lug grooves. The center lug grooves are tilted relative to both the circumferential direction and the width direction of the tire and each have a third groove turning portion and a fourth groove turning portion which protrude in the different directions in the circumferential direction of the tire.

    Heavy-duty pneumatic tire
    13.
    发明授权
    Heavy-duty pneumatic tire 有权

    公开(公告)号：US10029517B2

    公开(公告)日：2018-07-24

    申请号：US15523326

    申请日：2015-10-19

    Applicant: The Yokohama Rubber Co., LTD.

    Inventor： Mitsuru Manabe ,  Shoei Kakuta ,  Hideki Hamanaka ,  Yukihito Yamaguchi ,  Risa Tauchi ,  Toshiyuki Sato

    IPC: B60C11/11 ,  B60C9/20 ,  B60C11/03 ,  B60C11/13

    Abstract: A heavy-duty pneumatic tire includes a tread pattern including center lug grooves, shoulder lug grooves, a pair of circumferential primary grooves formed in wave-like shapes by alternately connecting ends of the center lug grooves and ends of the shoulder lug grooves and having a smaller width than the width of the shoulder lug grooves, center blocks defined by the center lug groove and the circumferential primary grooves, and a circumferential secondary groove extending in the tire circumferential direction so as to divide regions of the center blocks. The belt portion includes two or greater pairs of belts. The ratio of the width W8 of a belt having a smaller width in each of the belt pairs to the width W7 of a belt having a greater width is 0.75 or greater and 0.90 or less.

    Heavy-duty pneumatic tire
    20.
    发明授权
    Heavy-duty pneumatic tire 有权

    公开(公告)号：US11312187B2

    公开(公告)日：2022-04-26

    申请号：US16090158

    申请日：2017-03-28

    Applicant: The Yokohama Rubber Co., LTD.

    Inventor： Takamasa Motomitsu ,  Yukihito Yamaguchi

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

    Abstract: A tread pattern of a heavy duty pneumatic tire includes: a linear shaped center lug groove; a pair of circumferential main grooves formed in a wave shape in a tire circumferential direction; a center block; and a central narrow groove that does not have a linear shape, having an opening end that opens in the adjacent center lug grooves in a tire lateral direction position excluding on a tire equator line, and having a groove width that is narrower than the groove width of the shoulder lug groove. The groove width of the center lug groove and the circumferential main groove is narrower than the groove width of the shoulder lug groove. The central narrow groove has a portion that extends outwards in a tire lateral direction from the opening end in the half tread region where the opening end is positioned.

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