公开(公告)号：US10279230B2

公开(公告)日：2019-05-07

申请号：US15157855

申请日：2016-05-18

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Hiroshi Abe ,  Naruhiro Mizutani ,  Daisuke Kohno

IPC: A63B53/06 ,  A63B53/04 ,  A63B60/02 ,  A63B71/06 ,  A63B60/00

Abstract: Provided is a golf club head that is able to suppress lowering of the pitch of a ball hitting sound. The golf club head according to the present invention includes a crown portion, a face portion, and a sole portion having at least one recessed portion. The recessed portion is configured to house a weight member such that the weight member does not protrude externally. The sole portion is provided with a placement region connected to the face portion and to be at least partially placed on a placement surface in a reference state, and a rear region arranged further to a back side in a face-back direction than the placement region and in which the recessed portion is arranged. The rear region inclines upward relative to the placement region toward the back side.

公开(公告)号：US10272301B2

公开(公告)日：2019-04-30

申请号：US15176377

申请日：2016-06-08

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Hiroshi Abe ,  Daisuke Kohno

IPC: A63B53/04 ,  A63B53/06 ,  A63B60/02 ,  A63B71/06

Abstract: The golf club head includes a decoration member to be attached in the recessed portion, and a fixing member for fixing the decoration member in the recessed portion. A fixing hole is formed in a bottom surface of the recessed portion, and the fixing member is provided with a tubular head portion and a shaft portion that is attached to the head portion, has a smaller diameter than the head portion and is to be fixed in the fixing hole. The decoration member has a through hole. The through hole includes a shaft portion insertion portion and a head portion in which the head portion is to be arranged, with a gap being formed at least in a portion that is externally exposed between the inner wall surface of the head portion arrangement portion and the outer peripheral surface of the head portion.

公开(公告)号：US20190118047A1

公开(公告)日：2019-04-25

申请号：US16230360

申请日：2018-12-21

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Patrick RIPP ,  Roberto AGUAYO ,  Michael J. KLINE

IPC: A63B53/04

CPC classification number: A63B53/047 ,  A63B53/04 ,  A63B53/0466 ,  A63B2053/0408 ,  A63B2053/0445 ,  A63B2053/0479 ,  A63B2060/004 ,  Y10T29/49998

Abstract: 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.

公开(公告)号：USD846053S1

公开(公告)日：2019-04-16

申请号：US29626925

申请日：2017-11-21

Applicant: DUNLOP SPORTS CO. LTD.

Designer： Mika Becktor ,  Keith Dolezel

公开(公告)号：US10252124B2

公开(公告)日：2019-04-09

申请号：US15481902

申请日：2017-04-07

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Nick Trahan ,  Thomas Carlson ,  Christopher R. Cooper ,  Adam Sheldon

IPC: A63B53/04

Abstract: A putter-type golf club head that, when oriented in a reference position, includes a striking wall extending in the heel to toe direction and defines a substantially planar striking face for hitting a golf ball. A central elongate member is in communication with, and extends rearward from, the striking wall. An upper surface of the central elongate member includes a plurality of separate alignment elements. At least one of the plurality of alignment elements has an edge that extends substantially parallel to the striking face. The length of the parallel edge is substantially equivalent to the diameter of a golf ball.

公开(公告)号：US10238934B2

公开(公告)日：2019-03-26

申请号：US15640437

申请日：2017-06-30

Applicant: Dunlop Sports Co., Ltd.

Inventor： Mika Becktor

IPC: A63B53/14 ,  A63B53/00

Abstract: A grip for a putter-type golf club including a bottom end having a recess to receive a golf shaft, and a top end opposite the bottom end. The recess defines a longitudinal axis, and an exterior side surface extends about the circumference of the longitudinal axis. The exterior side surface defines a generally planar portion and a generally arcuate portion adjoining the planar portion. A grip cross-section no greater than 15 mm from the top end includes a planar portion cross-sectional width no less than 4 mm, a first cross-sectional length, L1, and a maximum cross-sectional width located at a depth D1 from the planar portion such that D1/L1 is no greater than 0.40. According to another aspect, a grip cross-section between 120 mm and 140 mm from the top end includes a cross-sectional maximum width, W3, and a cross-sectional length, L3, such that W3/L3 is no greater than 0.90.

公开(公告)号：US10232224B2

公开(公告)日：2019-03-19

申请号：US15608684

申请日：2017-05-30

Applicant: Dunlop Sports Co. Ltd.

Inventor： Ayaka Shindo ,  Hiroshi Tadaoka ,  Chiemi Mikura ,  Kazuyoshi Shiga

IPC: A63B37/02 ,  C08K5/14 ,  A63B37/00 ,  C08K5/098 ,  C08K5/09 ,  C08L9/00

Abstract: An object of the present invention is to provide a golf ball having excellent resilience performance. The present invention provides a golf ball having a spherical core and at least one cover layer, wherein the spherical core is formed from a rubber composition containing (a) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, and (c) a crosslinking initiator, provided that the rubber composition further contains (d) a metal compound in the case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent, wherein (c) the crosslinking initiator includes a peroxy ketal represented by the formula (1), and substituents represented by R1 and R2 have a bond dissociation energy of 435 KJ/mol or more.

公开(公告)号：USD842408S1

公开(公告)日：2019-03-05

申请号：US29619357

申请日：2017-09-28

Applicant: DUNLOP SPORTS CO. LTD.

Designer： Satoko Tsuchihashi

公开(公告)号：US10207163B2

公开(公告)日：2019-02-19

申请号：US15628174

申请日：2017-06-20

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Naruhiro Mizutani

IPC: A63B53/08 ,  A63B53/04

Abstract: A head 2 includes a face part 4. The face part 4 includes a plurality of constant thickness regions S1 and S2, and a plurality of thickness transition regions R1, R2 and R3. The constant thickness regions include a first constant region S1 and a second constant region S2 which is thinner than the first thickness region S1. The thickness transition regions R1, R2 and R3 which are adjacent to each other is disposed between the first constant region S1 and the second constant region S2. The thickness transition regions adjacent to each other have different thickness change rates from each other.

公开(公告)号：US10195488B2

公开(公告)日：2019-02-05

申请号：US15179233

申请日：2016-06-10

Applicant: Dunlop Sports Co. Ltd.

Inventor： Kazuyoshi Shiga ,  Hiroshi Tadaoka ,  Masanori Taguchi ,  Takahiro Shigemitsu

IPC: A63B37/04 ,  A63B37/06 ,  A63B37/00 ,  C08K5/09 ,  C08K5/19 ,  C08K3/22 ,  C08K3/04 ,  C08K5/098 ,  C08K5/20

Abstract: An object of the present invention is to provide a golf ball resin composition having a high resilience, flexibility and high fluidity. The present invention provides a golf ball resin composition having a bending stiffness (M21-30) ranging from 600 kgf/cm2 to 5,000 kgf/cm2 within a bending angle from 21° to 30°, a rebound resilience (R) of 50% or more, a slab hardness (Shore D) ranging from 40 to 65, a melt flow rate (190° C., 2.16 kgf) of 1.0 g/10 min or more, and a resilience index value ((M21-30)0.5×(R/100)3) of 8.5 or more.