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    Golf ball
    1.
    发明授权
    Golf ball 有权

    公开(公告)号：US10279222B2

    公开(公告)日：2019-05-07

    申请号：US14981418

    申请日：2015-12-28

    Applicant: Dunlop Sports Co., Ltd.

    Inventor： Kazuya Kamino ,  Kosuke Tachibana

    IPC: A63B37/06 ,  A63B37/00

    Abstract: An object of the present invention is to provide a golf ball traveling a great flight distance on driver shots and an excellent shot feeling. The present invention provides a golf ball comprising a spherical core, an intermediate layer covering the spherical core, and a cover covering the intermediate layer, wherein a material hardness (Hm) of a resin composition constituting the intermediate layer ranges from 65 to 80 in Shore D hardness, a material hardness (Hc) of a resin composition constituting the cover ranges from 57 to 72 in Shore D hardness, a hardness difference (Hm−Hc) between the material hardness (Hm) and the material hardness (Hc) is more than 0, and the intermediate layer has a surface hardness satisfying a hardness difference (HmsC−HmsD) between a hardness thereof shown in Shore C hardness (HmsC) and a hardness thereof shown in Shore D hardness (HmsD) of 27 or less.

    Golf ball
    3.
    发明授权
    Golf ball 有权

    公开(公告)号：US10350458B2

    公开(公告)日：2019-07-16

    申请号：US14981004

    申请日：2015-12-28

    Applicant: DUNLOP SPORTS CO. LTD.

    Inventor： Kosuke Tachibana ,  Kazuya Kamino

    IPC: A63B37/00

    Abstract: An object of the present invention is to provide a golf ball traveling a great distance on driver shots. The present invention provides a golf ball comprising a spherical core including an inner layer and an outer layer, wherein a difference (HX+1−HX−1) between a hardness (HX+1) at a point outwardly away in a radial direction from a boundary between the inner layer and the outer layer of the spherical core by 1 mm and a hardness (HX−1) at a point inwardly away in the radial direction from the boundary between the inner layer and the outer layer of the spherical core by 1 mm is 0 or more in Shore C hardness, a surface hardness (HX+Y) of the spherical core is more than 70 in Shore C hardness, an angle α of a hardness gradient of the inner layer is 0° or more, and a difference (α−β) between the angle α and an angle β of a hardness gradient of the outer layer is 0° or more.

    Golf ball
    4.
    发明授权
    Golf ball 有权

    公开(公告)号：US10188911B2

    公开(公告)日：2019-01-29

    申请号：US15783042

    申请日：2017-10-13

    Applicant: DUNLOP SPORTS CO. LTD.

    Inventor： Hidetaka Inoue ,  Kazuya Kamino

    IPC: A63B37/06 ,  A63B37/00 ,  A63B69/36

    Abstract: A golf ball 2 includes a core 4, a mid layer 6, and a cover 8. A hardness H75 at a point to which a distance from a central point of the core 4 is 75% of a radius of the core 4 is greater than a hardness H0 at the central point of the core 4. A difference D1=(H75−H0) is not less than 10.0 and not greater than 27.0 in Shore C hardness. A hardness Hs at a surface of the core 4 is greater than the hardness H75. A difference D2=(Hs−H75) is not less than 0 and not greater than 6.5 in Shore C hardness. The hardness H75 is less than a Shore C hardness HmC of the mid layer 6. A Shore D hardness HmD of the mid layer 6 is greater than a Shore D hardness Hc of the cover 8.

    GOLF BALL
    5.
    发明申请
    GOLF BALL 审中-公开

    公开(公告)号：US20180178075A1

    公开(公告)日：2018-06-28

    申请号：US15854039

    申请日：2017-12-26

    Applicant: DUNLOP SPORTS CO. LTD.

    Inventor： Toshiyuki TARAO ,  Kazuya Kamino ,  Mami Tanaka ,  Hidetaka Inoue

    IPC: A63B37/00

    CPC classification number: A63B37/0022 ,  A63B37/0043 ,  A63B37/0044 ,  A63B37/0062 ,  A63B37/0063 ,  A63B37/0073 ,  A63B37/0074 ,  A63B37/0075 ,  A63B37/0076 ,  A63B37/0092 ,  A63B37/0096

    Abstract: An object of the present invention is to provide a golf ball having good spin performance on approach shots and good shot feeling as well as excellent stain resistance by precisely controlling physical properties of a paint film actually formed on a surface of a golf ball body. The present invention provides a golf ball comprising a golf ball body and a paint film formed on a surface of the golf ball body, wherein the paint film is such that a linear approximation curve obtained by a least square method has a slope in a range from 0.0015 to 0.0045 when a storage modulus (GPa) thereof measured by a nanoindentation method is plotted as a vertical axis against a measuring frequency (Hz) as a horizontal axis, and that an elastic modulus thereof measured by a nanoindentation method ranges from 0.040 GPa to 0.600 GPa.

    Golf ball
    9.
    发明授权
    Golf ball 有权

    公开(公告)号：US09468813B2

    公开(公告)日：2016-10-18

    申请号：US14752427

    申请日：2015-06-26

    Applicant: DUNLOP SPORTS CO. LTD.

    Inventor： Kosuke Tachibana ,  Kazuya Kamino ,  Takahiro Sajima

    IPC: A63B37/06 ,  A63B37/00

    CPC classification number: A63B37/0075 ,  A63B37/0006 ,  A63B37/0012 ,  A63B37/0021 ,  A63B37/0033 ,  A63B37/0043 ,  A63B37/0092

    Abstract: A golf ball 2 includes a core 4, a mid layer 6, a cover 8 and a paint layer 10. The core 4 includes a center 12 and an envelope layer 14. The golf ball 2 satisfies the following mathematical formulas. In the mathematical formulas, Hm represents a Shore D hardness of the mid layer, Hc represents a Shore D hardness of the cover, and Hb represents a Shore D hardness of the surface of the golf ball. The golf ball 2 has a large number of dimples 16 on a surface thereof. The number of planes that can divide a pattern of the dimples so that divided patterns are mirror symmetry to each other is one. Hc≦49 Hm−Hc≧15 Hm−Hb≦2

    Golf club set fitting device, fitting method, and computer-readable medium storing fitting program
    10.
    发明授权
    Golf club set fitting device, fitting method, and computer-readable medium storing fitting program 有权
    高尔夫球杆套装装置，装配方法以及存储装配程序的计算机可读介质

    公开(公告)号：US09463366B2

    公开(公告)日：2016-10-11

    申请号：US14515109

    申请日：2014-10-15

    Applicant: DUNLOP SPORTS CO. LTD.

    Inventor： Kazuya Kamino

    IPC: A63B53/00 ,  A63B69/36 ,  A63B71/06

    CPC classification number: A63B60/46 ,  A63B60/42 ,  A63B69/36 ,  A63B2053/005 ,  A63B2069/3605 ,  A63B2071/0694 ,  A63B2220/807

    Abstract: A device is provided with an obtaining unit, a specifying unit, and a determination unit. The obtaining unit obtains measurement data in which the golfer has performed a test-hit of at least one number of a golf club for each type of golf club from among the multiple types of golf clubs. The specifying unit specifies a relationship of correspondence between a loft angle and a flight-distance for each type of golf club based on the measurement data. The determination unit determines, based on the relationship of correspondence, a type of golf club having a large flight-distance with respect to a loft angle as a best-match type, which is a type of golf club best matched to the golfer.

    Abstract translation: 设备具有获取单元，指定单元和确定单元。 获取单元从多种类型的高尔夫球杆中获得测量数据，其中高尔夫球手已经针对每种类型的高尔夫球杆进行了至少一个数量的高尔夫球杆的测试命中。 指定单元基于测量数据指定每种类型的高尔夫球杆的顶角和飞行距离之间的对应关系。 确定单元基于对应关系确定作为与高尔夫球员最佳匹配的高尔夫球杆类型的作为最佳匹配类型的具有相对于鸽舍角度的大飞行距离的高尔夫球杆的类型。

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