公开(公告)号：US20180311560A1

公开(公告)日：2018-11-01

申请号：US15643247

申请日：2017-07-06

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Yuki MOTOKAWA ,  Naruhiro MIZUTANI ,  Jacob LAMBETH

IPC: A63B69/36 ,  A63B60/46 ,  A63B60/42

CPC classification number: A63B60/46 ,  A63B53/04 ,  A63B53/0466 ,  A63B60/42 ,  A63B69/3617 ,  A63B2053/045 ,  A63B2069/3605 ,  A63B2102/32 ,  A63B2220/803 ,  A63B2220/833

Abstract: A golf club head having a striking face configured to impact a golf ball comprises the striking face comprising an effective striking area, the effective striking area having an expected COR value, defined by the following expression, not less than 0.810, Expected   COR = ∑ i = 1 n  ∑ j = 1 m  p ij * c ij wherein pij is an impact probability at location or region (i, j) within the effective striking area, and cij is a COR value of the location or region (i, j).

公开(公告)号：US20180361211A1

公开(公告)日：2018-12-20

申请号：US16112192

申请日：2018-08-24

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Jacob LAMBETH ,  Mika BECKTOR

IPC: A63B53/04

Abstract: A putter-type golf club head has a top portion, a bottom portion, a heel portion, a toe portion, and a striking face having a variably textured region. The variably textured region includes a central portion and an outer portion laterally spaced from the central portion towards one of the heel portion and the toe portion. The central portion has a material ratio of less than 20% at a cutoff height of 0.1 mm and the outer portion has a material ratio greater than that of the central portion at the cutoff height of 0.1 mm. Variation of the textured region provides consistent ball speed upon impact at different lateral positions of the striking face.

公开(公告)号：US20180361206A1

公开(公告)日：2018-12-20

申请号：US15625526

申请日：2017-06-16

Applicant: DUNLOP SPORTS CO., LTD.

Inventor： Mika BECKTOR ,  Dustin BREKKE ,  Jacob LAMBETH

IPC: A63B53/02 ,  A63B53/00 ,  A63B60/54

CPC classification number: A63B53/02 ,  A63B53/007 ,  A63B60/54 ,  A63B2102/32 ,  A63B2209/00

Abstract: A coupling for securing a golf shaft to a golf club head includes a first component configured to contact, and engage with, the golf shaft, and a second component bonded to the first component and configured to space the first component from the golf club head. The second component includes a second material having a Young's modulus less than a first material of the first component. In another aspect, a coupling includes a shaft engagement element, and a spacer configured to space the first component from the golf club head so that the golf shaft is above the golf club head in its entirety. The spacer includes a material having a Young's modulus no greater than about 10 Gpa. In another aspect, a kit includes a first coupling and a second coupling with at least one of a structural configuration or a material of a vibration dampening element differing.

公开(公告)号：US20190209904A1

公开(公告)日：2019-07-11

申请号：US16235977

申请日：2018-12-28

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Yuki MOTOKAWA ,  Naruhiro MIZUTANI ,  Jacob LAMBETH

IPC: A63B60/46 ,  A63B69/36 ,  A63B60/42 ,  A63B53/04

CPC classification number: A63B60/46 ,  A63B53/04 ,  A63B53/0466 ,  A63B60/42 ,  A63B69/3617 ,  A63B2053/045 ,  A63B2069/3605 ,  A63B2102/32 ,  A63B2220/803 ,  A63B2220/833

Abstract: A golf club head includes a top portion, a sole portion opposite the top portion, and a striking face configured to impact a golf ball. The striking face includes a face center and a variable thickness distribution such that the club head exhibits an Expected COR value of not less than 0.810, the Expected COR value being determined based on the following relationship: Expected   COR = ∑ i = 1 n  ∑ j = 1 m  p ij * c ij The variable cij corresponds to an average COR value associated with bin i, j, and the variable pij corresponds to a bin-specific impact probability value. And the club head exhibits a characteristic time no greater than 257 microseconds.

公开(公告)号：US20190168088A1

公开(公告)日：2019-06-06

申请号：US16271169

申请日：2019-02-08

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Mika BECKTOR ,  Jacob LAMBETH

IPC: A63B53/04 ,  A63B53/00

Abstract: A golf club is disclosed that has a golf club head with a face having peaks or ridges and deep grooves or valleys. The deep grooves or valleys promote improved “feel” and/or reduced “smash factor” which may be particularly desirable when the golf club head comprises a putter face. The deep grooves or valleys may eliminate the need for costly soft metal alloy faces and/or polymeric or other resilient inserts between the face and the body of the golf club head.

公开(公告)号：US20180311552A1

公开(公告)日：2018-11-01

申请号：US15941786

申请日：2018-03-30

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Jacob LAMBETH ,  Jeff D. BRUNSKI

IPC: A63B60/46 ,  A63B60/42 ,  A63B53/04

Abstract: A method of manufacturing a golf club head includes: (a) providing a model of a golf club head, the model including a striking face portion and a first plurality of structural attributes; (b) generating first data comprising relationship information between locations about the striking face and predicted coefficient of restitution or characteristic time values based on modeled golf ball impact; (c) providing second data comprising relationship information between generalized striking face position and impact probability; (d) calculating a first expected overall performance value based on the first data and the second data; (e) modifying the first plurality of structural attributes based on the first expected overall performance value, resulting in a second plurality of structural attributes different from the first plurality of structural attributes; and (f) forming a golf club head having club head structural attributes corresponding to the second plurality of structural attributes of the model.

公开(公告)号：US20180311545A1

公开(公告)日：2018-11-01

申请号：US15946961

申请日：2018-04-06

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Jacob LAMBETH ,  Mika BECKTOR

IPC: A63B53/04 ,  B23P15/00

Abstract: A putter-type golf club head includes a striking face with a plurality of grooves having a variable depth profile and a variable pitch. Groove variation is tailored to correspond to the golf club heads' moment-of-inertia, mass, or another attribute. A surface treatment method includes selecting a variable depth profile and a variable pitch for a plurality of grooves and surface milling a striking face of a golf club head to form the plurality of grooves.

公开(公告)号：US20180001163A1

公开(公告)日：2018-01-04

申请号：US15198867

申请日：2016-06-30

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Mika BECKTOR ,  Jacob LAMBETH

IPC: A63B53/04 ,  A63B53/00

CPC classification number: A63B53/0487 ,  A63B53/007 ,  A63B53/04 ,  A63B2053/0408 ,  A63B2053/0445

Abstract: A golf club is disclosed that has a golf club head with a face having peaks or ridges and deep grooves or valleys. The deep grooves or valleys promote improved “feel” and/or reduced “smash factor” which may be particularly desirable when the golf club head comprises a putter face. The deep grooves or valleys may eliminate the need for costly soft metal alloy faces and/or polymeric or other resilient inserts between the face and the body of the golf club head.