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    TIRE
    1.
    发明公开
    TIRE 审中-公开

    公开(公告)号：US20230415511A1

    公开(公告)日：2023-12-28

    申请号：US18210372

    申请日：2023-06-15

    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

    Inventor： Ayuko YAMADA ,  Kentaro NAKAMURA

    IPC: B60C1/00 ,  C08K3/36 ,  C08L9/06

    CPC classification number: B60C1/0008 ,  C08K3/36 ,  C08L9/06 ,  B60C2001/0083

    Abstract: It is provided a tire having a tread portion, wherein the cap rubber layer forming the tread portion is formed from a rubber composition containing 60 parts by mass or more and 80 parts by mass or less of styrene-butadiene rubber having a styrene content of 25% by mass or less in 100 parts by mass of the rubber component, and containing 100 parts by mass or less of silica with respect to 100 parts by mass of the rubber component, whose loss tangent (30° C. tan δ) is 0.25 or less; and the thickness of the tread portion is 6 mm or more and 12 mm or less; and an object of the present invention is to improve rolling resistance at the time of starting.

    PNEUMATIC TYRE
    2.
    发明申请
    PNEUMATIC TYRE 有权

    公开(公告)号：US20210129599A1

    公开(公告)日：2021-05-06

    申请号：US16478439

    申请日：2018-01-29

    Applicant: Sumitomo Rubber Industries, Ltd.

    Inventor： Masako NAKATANI ,  Takahiro KAWACHI ,  Ayuko YAMADA ,  Noboru OKABE ,  Keiji TAKAGI ,  Natsuki MAEKAWA ,  Kenji HAMAMURA ,  Subaru TOYA

    IPC: B60C19/00

    Abstract: A pneumatic tyre 1 includes a carcass 6 extending between bead cores of bead portions via a tread portion 2 and sidewall portions, and a belt layer 7 arranged on an outer side in a tyre radial direction of the carcass 6 and inside of the tread portion 2. The pneumatic tyre 1 has a damping rubber body 30 arranged between the carcass 6 and the belt layer 7, and a noise damper 20 arranged on an inner cavity surface of the tread portion 2. A width W1 in a tyre axial direction of the damping rubber body 30 is in a range of from 60% to 130% of a width W2 in the tyre axial direction of the belt layer 7, and air permeability of the noise damper 20 measured in accordance with the Japanese Industrial Standard JIS-L1096 is 3.0 cm3/cm2/s or less.

    PNEUMATIC TIRE
    3.
    发明申请
    PNEUMATIC TIRE 有权

    公开(公告)号：US20200164700A1

    公开(公告)日：2020-05-28

    申请号：US16080210

    申请日：2017-12-06

    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

    Inventor： Masako NAKATANI ,  Takahiro KAWACHI ,  Nanaho KAMI ,  Ayuko YAMADA ,  Takuya HORIGUCHI ,  Tatsuhiro TANAKA ,  Keiji TAKAGI ,  Subaru TOYA

    IPC: B60C19/00 ,  B60C1/00 ,  B60C9/18 ,  B60C11/00 ,  C08K3/04 ,  C08K3/06 ,  C08K3/36

    Abstract: To be capable of preventing deterioration of uniformity after puncture repair while suppressing running noise.[Solution] A pneumatic tire 1 comprises a noise damper 20 fixed to a tire inner cavity surface of a tread portion 2 and formed of a porous material. The noise damper 20 includes a first part 23 arranged on an outer side in a tire radial direction and fixed to the tire inner cavity surface 16, and a second part 24 arranged on an inner side in the tire radial direction of the first part 23 and exposed in a tire inner cavity 17. A water absorption rate of the first part 23 calculated by a following formula (1) is in a range of from 5% to 25%. Air permeability of the second part 24 measured in accordance with Japanese Industrial standard JIS-L1096 is in a range of from 1 to 7 cm3/cm2/s. The formula (1) is: water absorption rate (%)=weight change before and after immersion (g)/volume at 50% compression (cm3)×100 (1).

    PNEUMATIC TIRE
    8.
    发明申请
    PNEUMATIC TIRE 审中-公开

    公开(公告)号：US20170233562A1

    公开(公告)日：2017-08-17

    申请号：US15503314

    申请日：2015-07-10

    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

    Inventor： Ayuko YAMADA ,  Yuhei YAMASHIRO ,  Soh ISHINO

    IPC: C08L15/00 ,  C08K3/04 ,  C08K3/36

    CPC classification number: C08L15/00 ,  B60C1/00 ,  C08K3/04 ,  C08K3/36 ,  C08K2201/006 ,  C08L91/00 ,  C08L91/06 ,  C08L7/00

    Abstract: The present invention provides a pneumatic tire having well-improved rubber tensile strength and abrasion resistance. The present invention relates to a pneumatic tire formed from a rubber composition, the rubber composition containing: a hydrogenated copolymer obtained by copolymerization of an aromatic vinyl compound and a conjugated diene compound, the hydrogenated copolymer having a degree of hydrogenation of the conjugated diene units of 75 mol % or more; a fine particle silica having a CTAB specific surface area of 160 m2/g or more and a BET specific surface area of 170 m2/g or more; and carbon black, the rubber composition containing, per 100% by mass of the rubber component, 75% by mass or more of the hydrogenated copolymer, the rubber composition containing, relative to 100 parts by mass of the rubber component, 3 parts by mass or more of the carbon black.

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