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    TIRE
    1.
    发明公开
    TIRE 审中-公开

    公开(公告)号：EP4427946A2

    公开(公告)日：2024-09-11

    申请号：EP24156586.0

    申请日：2024-02-08

    申请人： Sumitomo Rubber Industries, Ltd.

    发明人： MIURA, Akiko

    IPC分类号： B60C11/03

    CPC分类号： B60C11/0304 ,  B60C11/0332 ,  B60C2011/034120130101 ,  B60C2011/035820130101 ,  B60C2011/038120130101

    摘要： The tire (1) includes a tread portion (2) provided with a first tread edge (T1), a shoulder circumferential groove (3), and a shoulder land region (5). The shoulder land region (5) includes an inner area (5A) demarcated axially inside from a center position (5c) in the tire axial direction of the shoulder land region (5), an outer area (5B) demarcated axially outside from the center position (5c), and a plurality of shoulder axial grooves (8) extending in the tire axial direction at least in the outer area (5B). In a standard tire load loaded state, an average ground contact pressure (Pb) in the outer area (5B) is larger than an average ground contact pressure (Pa) in the inner area 5A.

    PNEUMATIC TIRE
    4.
    发明授权
    PNEUMATIC TIRE 审中-公开

    公开(公告)号：EP3061628B1

    公开(公告)日：2018-12-26

    申请号：EP14855078.3

    申请日：2014-07-04

    申请人： Bridgestone Corporation

    发明人： SUGIYASU, Shinpei

    IPC分类号： B60C11/00 ,  B60C11/03 ,  B60C11/13

    CPC分类号： B60C11/0332 ,  B60C11/0304 ,  B60C11/0306 ,  B60C11/1376 ,  B60C2011/0334 ,  B60C2011/0353 ,  B60C2011/0381 ,  B60C2011/039

    摘要： The pneumatic tire of this disclosure includes on a tread surface at least one circumferential main groove having a groove width cyclically varying, and a lib-like land portion, wherein: among the lib-like land portions, a lib-like land portion disposed on at least one side of the circumferential main groove is formed in a shape such that: an outline shape of the lib-like land portion has a shape forming a protrusion, a tire widthwise position of the apex being equal on a tire circumference; a widthwise end portion adjacent to the circumferential main groove of the lib-like land portion is located on a side 0.3 mm or more inner than a position of the apex; an area on a tire widthwise end side of the tread surface of the lib-like land portion has a descending area with a width of 3% or more of the width of the lib-like land portion.

    TIRE
    6.
    发明授权
    TIRE 有权

    公开(公告)号：EP3156259B1

    公开(公告)日：2018-10-31

    申请号：EP15807378.3

    申请日：2015-05-25

    申请人： Bridgestone Corporation

    发明人： KATAYAMA, Shinsaku ,  KAJI, Yoshio ,  KURATA, Takayuki

    IPC分类号： B60C11/03 ,  B60C11/12

    CPC分类号： B60C11/0302 ,  B60C11/03 ,  B60C11/033 ,  B60C11/0332 ,  B60C11/12 ,  B60C11/1236 ,  B60C2011/0344 ,  B60C2011/0374

    摘要： A tire having V-shaped lug grooves displays both improved grip performance on snow and anti-hydroplaning performance. To that end, an absolute value of difference between a lug groove diagonal angle ( ¸ LG ), which is an angle of diagonal lug grooves (13) in a tread (11) surface with respect to a tire axial direction, and a profile line diagonal angle ( ¸ FP ), which is an angle of a normal line of a leading-end profile line of a contact patch shape of the tire (10) with respect to the tire axial direction, is set to 0° or more and 60° or less at respective positions in the tire axial direction. And diagonal lug grooves (13) are formed such that absolute values of difference in a center portion, which is defined to be 20% in width of a contact patch width (W) with an equatorial plane at a center, and an intermediate portion, which is defined to be 20% of the contact patch width (W) on each axially outer side adjacent to the center portion, are larger than an absolute value of difference in a shoulder portion, which is defined to be 20% of the contact patch width (W) on each axially outer side adjacent to the intermediate portion.

    TIRE WITH IMPROVED TREAD
    8.
    发明授权
    TIRE WITH IMPROVED TREAD 有权

    公开(公告)号：EP2516180B1

    公开(公告)日：2018-07-04

    申请号：EP10794989.3

    申请日：2010-12-17

    申请人： Compagnie Générale des Etablissements Michelin

    发明人： FAURE, Jean-Claude ,  IGIER, Emmanuel ,  MANGERET, Jean-Luc

    IPC分类号： B60C11/00 ,  B60C11/03

    CPC分类号： B60C11/0058 ,  B60C1/0016 ,  B60C11/03 ,  B60C11/0332 ,  B60C2011/0025 ,  Y10T152/10495

    摘要： Tire (10) comprising a tread (40) having a mean radial height HB, an outer edge (45) and an inner edge (46), the axial distance between the outer edge (45) and the inner edge (46) defining the axial width L of the tread, the tread comprising a first portion (411) made of a first rubber compound, extending from the outer edge (45) to a first axial position at an axial distance from the outer edge of between 20% and 40% of the axial width; a second portion (412) made of a second rubber compound, extending from said first axial position to a second axial position at an axial distance from the outer edge of between 50% and 60% of the axial width L; a third portion (413) made of a third rubber compound extending from said second axial position to a third axial position at an axial distance from the outer edge of between 80% and 90% of the axial width L; and a fourth portion (414) made of a fourth rubber compound, extending from said third axial position to the inner edge (46) of the tread, wherein said first and third rubber compounds are predominantly filled with carbon black filler, wherein said second and fourth rubber compounds are predominantly filled with non carbon black filler, and wherein said first rubber compound and said third rubber compound have a value for tan δ at 0° C., at a stress of 0.7 MPa, that is lower than that of said second rubber compound and said fourth rubber compound.