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    Golf ball
    5.
    发明授权
    Golf ball 有权

    公开(公告)号：US12083391B2

    公开(公告)日：2024-09-10

    申请号：US18109703

    申请日：2023-02-14

    申请人： Sumitomo Rubber Industries, Ltd.

    发明人： Sho Goji ,  Kazuyoshi Shiga

    IPC分类号： A63B37/06 ,  A63B37/00 ,  A63B47/00

    CPC分类号： A63B37/0062 ,  A63B37/0045 ,  A63B37/0064 ,  A63B37/0075 ,  A63B37/0076 ,  A63B37/0096 ,  A63B47/008

    摘要： An object of the present disclosure is to provide a golf ball having an increased spin rate when being hit with an 8-iron while suppressing rise in a spin rate when being hit with a driver. The present disclosure provides a golf ball comprising a spherical core having an inner core and an outer core, and a cover positioned outside the spherical core, wherein A×a is 12,200 or less and B×b is 20,400 or more, where “a” represents an average hardness (Shore C) of a hardness (H2.5) at a point of 2.5 mm from a center of the spherical core and a hardness (H5) at a point of 5 mm from the center of the spherical core, “b” represents an average hardness (Shore C) of a hardness (H7.5) at a point of 7.5 mm from the center of the spherical core and a hardness (H9) at a point of 9 mm from the center of the spherical core, “A” represents an impulse difference (kN·μs) between a back spin impulse and a top spin impulse measured using a contact force tester under a condition corresponding to a condition when the golf ball is hit with a driver, and “B” represents an impulse difference (kN·μs) between a back spin impulse and a top spin impulse measured using a contact force tester under a condition corresponding to a condition when the golf ball is hit with an 8-iron.

    GOLF BALL
    7.
    发明公开
    GOLF BALL 审中-公开

    公开(公告)号：US20240278080A1

    公开(公告)日：2024-08-22

    申请号：US18438957

    申请日：2024-02-12

    申请人： Sumitomo Rubber Industries, Ltd.

    发明人： Hikaru NAGAKURA ,  Takumi KANEKO ,  Takehiko HYODO ,  Kazuyoshi SHIGA

    IPC分类号： A63B37/00 ,  C08L9/00

    CPC分类号： A63B37/0063 ,  A63B37/00622 ,  A63B37/0073 ,  A63B37/008 ,  A63B37/0087 ,  C08L9/00 ,  A63B37/0074 ,  A63B37/0075 ,  C08L2205/03

    摘要： An object of the present disclosure is to provide a novel golf ball aiming at realization of a sustainable and better society and having a low spin rate on driver shots. The present disclosure provides a golf ball comprising a spherical constituent member, wherein the spherical constituent member is formed from a rubber composition containing (a) a rubber component containing a natural rubber, (b) a co-crosslinking agent, (c) a crosslinking initiator, and (d) an organic sulfur compound, a surface hardness (Hs) of the spherical constituent member is 75 or more in Shore C hardness, a hardness difference (Hs−H75) between the surface hardness (Hs) of the spherical constituent member and a hardness (H75) at a 75% point of a radius of the spherical constituent member from a center of the spherical constituent member is 3 or more and 10 or less in Shore C hardness, and a hardness difference (Hs−Ho) between the surface hardness (Hs) and a center hardness (Ho) of the spherical constituent member is 16 or more in Shore C hardness.

    MULTI-LAYER GOLF BALLS WITH IMPROVED INTERLAYER ADHESION
    8.
    发明公开
    MULTI-LAYER GOLF BALLS WITH IMPROVED INTERLAYER ADHESION 审中-公开

    公开(公告)号：US20240278075A1

    公开(公告)日：2024-08-22

    申请号：US18108260

    申请日：2023-02-10

    申请人： Acushnet Company

    发明人： Michael Michalewich ,  Shawn Ricci

    IPC分类号： A63B37/00

    CPC分类号： A63B37/0024 ,  A63B37/0039 ,  A63B37/005

    摘要： Casing compositions including carboxyl groups, cover compositions including hydroxyl groups and an adhesion promoter capable of crosslinking carboxyl and hydroxyl groups, and golf balls made from such compositions that have crosslinks between carboxyl groups in the casing composition and hydroxyl groups in the cover composition. The type and concentration of the components in the casing and cover compositions, including the adhesion promoter, affect the adhesion between golf balls having components made from such compositions and, thus, can be used to produce a golf ball having increased durability.