Fitting method of golf club
    1.
    发明授权

    公开(公告)号:US10806979B2

    公开(公告)日:2020-10-20

    申请号:US13871055

    申请日:2013-04-26

    摘要: This fitting method includes, for example, the following steps A1 to E1: (A1) a step of measuring a plurality of impact conditions using a reference club; (B1) a step of obtaining hit ball arrival point data; (C1) a step of selecting two or more of the plurality of impact conditions as explanation variables and performing multiple linear regression analysis with the hit ball arrival point data as an objective variable; (D1) a step of selecting a specific explanation variable from the two or more explanation variables based on a result of the multiple linear regression analysis; and (E1) a step of determining a recommended club including a specification capable of suppressing variation in the specific explanation variable.

    Golf ball
    4.
    发明授权

    公开(公告)号:US10590259B2

    公开(公告)日:2020-03-17

    申请号:US15716972

    申请日:2017-09-27

    摘要: A golf ball includes a spherical core, and a cover covering the spherical core. The spherical core is formed from a rubber composition including a base rubber, a co-cross-linking agent, a cross-linking initiator, and an unsaturated fatty acid and/or a metal salt thereof, the co-cross-linking agent includes α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof, the unsaturated fatty acid and/or metal salt thereof excludes an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and a metal salt thereof, an unsaturated aliphatic carboxylic acid that forms the unsaturated fatty acid and/or metal salt thereof has a functional group other than a carboxy group and a carbon-carbon unsaturated bond, and the rubber composition further includes a metal compound when the co-cross-linking agent is only an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms.

    Golf club head
    5.
    发明授权

    公开(公告)号:US10561909B2

    公开(公告)日:2020-02-18

    申请号:US16037547

    申请日:2018-07-17

    IPC分类号: A63B53/04 A63B53/02

    摘要: A golf club head includes a striking face having a face center and a virtual striking face plane generally parallel to the striking face. The golf club head further includes a sole portion, a top portion, a rear portion, and a loft L no less than 40°. A virtual vertical plane perpendicular to the striking face plane passes through the face center. A club head center of gravity is spaced from the virtual vertical plane in the heel-to-toe direction by a distance D1 that is no greater than 6.0 mm. The golf club head further includes a hosel including an internal bore configured to receive a golf shaft. The internal bore includes a peripheral side wall and a shaft abutment surface configured to abut a tip end of the golf club shaft. The hosel further comprises an auxiliary recess extending sole-ward from the abutment surface of the internal bore.

    Golf club head having texture pattern and method for producing the same

    公开(公告)号:US10537771B2

    公开(公告)日:2020-01-21

    申请号:US16230360

    申请日:2018-12-21

    IPC分类号: A63B53/04 A63B60/00

    摘要: Provided are a golf club head and a method for producing the golf club head. The golf club head comprises a striking face that in turn comprises a recurrent texture pattern that has a period T and that is defined by a plurality of depressions, each depression having an average depth no greater than 0.10 mm. The striking face also comprises a plurality of scorelines that at least partially intersect the recurrent texture pattern and that have a scoreline pitch Ps such that T/Ps is greater than 1.0, each scoreline having an average depth no less than 0.10 mm.

    Weight member for a golf club head

    公开(公告)号:US10456641B2

    公开(公告)日:2019-10-29

    申请号:US16038500

    申请日:2018-07-18

    摘要: A weight member for removable attachment to a weight port of a golf club head is provided. The weight member comprises a head that has a tool mating port for operatively receiving a portion of a fastening tool. The weight member further comprises a shaft that is associated with the head such that the shaft terminates at an end surface. The shaft has a threaded external surface and a non-threaded internal bore that extends from the end surface.

    Golf club head with textured striking face

    公开(公告)号:US10376755B2

    公开(公告)日:2019-08-13

    申请号:US15793538

    申请日:2017-10-25

    IPC分类号: A63B53/04

    摘要: A golf club head includes a striking face with a plurality of scorelines. A first virtual vertical plane is perpendicular to the striking face and passes through a toe-wardmost extent of the scorelines, and a second virtual vertical plane is parallel to the first virtual vertical plane and passes through a heel-wardmost extent of the scorelines. A central region bounded by the first virtual vertical plane, the second virtual vertical plane, and a striking face periphery has a first average surface roughness Ra1 of between about 40 μin and about 180 μin. And a majority of a toe region hounded by the first vertical plane and the striking face periphery is textured to have a second average surface roughness Ra2 no less than 1.5 times Ra1.

    Golf club head
    9.
    发明授权

    公开(公告)号:US10369431B2

    公开(公告)日:2019-08-06

    申请号:US15299890

    申请日:2016-10-21

    IPC分类号: A63B53/04

    摘要: A head includes a head body and a face plate fixed to the head body. The face plate includes a plate front surface, a plate back surface, and a plate side surface. The plate back surface includes a center of figure. The head body includes a receiving surface which supports the plate back surface from rear. An outer peripheral edge part of the plate back surface includes a projection part which abuts on the receiving surface. If a toe-side region, a top-side region, and a sole-side region of the projection part are defined as a first section, and a heel-side region of the projection part is defined as a second section, then a width of the projection part is varied in the first section.

    Rubber composition, crosslinked rubber molded product and golf ball

    公开(公告)号:US10293215B2

    公开(公告)日:2019-05-21

    申请号:US15851135

    申请日:2017-12-21

    摘要: An object of the present invention is to provide a rubber composition from which a crosslinked rubber molded product excellent in the resilience performance can be obtained. The present invention provides a rubber composition containing (a) a base rubber, (b) a co-crosslinking agent and (c) a crosslinking initiator, wherein (b) the co-crosslinking agent contains a complex represented by a general formula (1). [In the formula (1), M is a metal atom, and L is a carboxylate represented by the general formula (2). In the formula (2), R is a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, an alkenyl group having 2 to 18 carbon atoms or an alkynyl group having 2 to 18 carbon atoms, and the dotted line shows a resonance structure. In the formula (1), a plurality of R may be identical to or different from each other, and at least one of R is the alkenyl group having 2 to 18 carbon atoms or the alkynyl group having 2 to 18 carbon atoms.]