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2034 条记录 (耗时 0.023 秒)

    PNEUMATIC TIRE
    1.
    发明公开
    PNEUMATIC TIRE 审中-公开

    公开(公告)号：EP4450300A1

    公开(公告)日：2024-10-23

    申请号：EP22907375.4

    申请日：2022-12-09

    申请人： The Yokohama Rubber Co., Ltd.

    发明人： OZAKI Makoto ,  ISHII Hidekazu ,  SUZUKI Sakiko

    IPC分类号： B60C11/00 ,  B60C1/00 ,  B60C9/00 ,  B60C9/08 ,  B60C9/22 ,  C08K3/04 ,  C08K3/36 ,  C08L7/00 ,  C08L9/00 ,  C08L21/00

    摘要： Provided is a pneumatic tire that can provide improved high-speed steering stability, low rolling resistance, and high-speed durability and provide these performances in a highly compatible manner in reducing road noise by using PET fiber cords for a belt cover layer. In a pneumatic tire including a belt reinforcing layer (8) and a tread portion (1) made up of a cap tread layer (11) and an under tread layer (12), a cover cord constituting the belt reinforcing layer (8) is made of a polyethylene terephthalate fiber cord having an elongation ratio under a load of 2.0 cN/dtex at 100°C ranging from 2.0% to 4.0%, the under tread layer (11) is made up of rubber that is made of a rubber composition blending, per 100 parts by mass of rubber component, 35 parts by mass to 60 parts by mass of carbon black having a CTAB adsorption specific surface area of less than 70 m 2 /g and 3 parts by mass to 30 parts by mass of silica having the CTAB adsorption specific surface area of less than 180 m 2 /g and has a hardness at 20°C ranging from 60 to 65, a tensile stress at 100% elongation at 100°C ranging from 2.0 MPa to 4.0 MPa, and a product of a tensile strength at 100°C and an elongation at break at 100°C of 2000 or more.

    TIRE
    5.
    发明公开
    TIRE 审中-公开

    公开(公告)号：EP4438332A1

    公开(公告)日：2024-10-02

    申请号：EP22898255.9

    申请日：2022-10-12

    申请人： BRIDGESTONE CORPORATION

    发明人： ONOUE, Shingo ,  MATSUMOTO, Kyohei

    IPC分类号： B60C9/00 ,  B60C9/20 ,  C08L21/00

    CPC分类号： C08L21/00 ,  B60C9/00 ,  B60C9/20

    摘要： Provided is a tire comprising at least one reinforcement layer in a tread portion, wherein the reinforcement layer includes a reinforcement element 2 consisting of a plurality of metal filaments 1 that are aligned in a single row without being twisted together, and crosslinked rubber 3 coating the reinforcement element 2, and the metal that constitutes the metal filaments 1 is steel whose surface is coated with a ternary plating of copper, zinc, and iron. This tire has a reinforcement layer with excellent adhesive durability between the steel cord and its coating crosslinked rubber and high fuel efficiency.

    PNEUMATIC TIRE
    10.
    发明公开
    PNEUMATIC TIRE 审中-实审

    公开(公告)号：EP4400332A1

    公开(公告)日：2024-07-17

    申请号：EP22867044.4

    申请日：2022-06-29

    申请人： The Yokohama Rubber Co., Ltd.

    发明人： NAKAJIMA, Miyuki ,  HARIKAE, Shinya ,  FUJISHIRO, Masayuki

    IPC分类号： B60C9/22 ,  B60C9/00 ,  B60C9/20

    CPC分类号： B60C9/22 ,  B60C9/00 ,  B60C9/20

    摘要： Provided is a pneumatic tire that includes a belt reinforcing layer formed of an organic fiber cord and allows providing improved durability of the tire and weight reduction and a reduction in rolling resistance of the tire in a compatible manner. A belt layer (7) disposed on an outer circumferential side of a carcass layer in a tread portion (1) is made of a monofilament wire having a wire diameter of 0.30 mm or more and 0.45 mm or less. A belt reinforcing layer (8) disposed on an outer circumferential side of the belt layer (7) is made of a belt reinforcing cord made of a polyethylene terephthalate fiber and having an intermediate elongation under 2.0 cN/dtex load of from 2.0% to 4.0%. Circumferential portions of a strip (S) in which belt reinforcing cords (8c) are arranged are disposed at intervals in a tire width direction.