公开(公告)号：US10080931B2

公开(公告)日：2018-09-25

申请号：US14677742

申请日：2015-04-02

Applicant: DUNLOP SPORTS CO., LTD.

Inventor： Jeff D. Brunski ,  Darius Cyrulik ,  Matthew R. Daraskavich ,  Michael T. Prichard ,  Ryan J A. Ritchie ,  Michael J. Cohen

IPC: A63B53/04 ,  A63B60/42

CPC classification number: A63B53/04 ,  A63B53/0466 ,  A63B53/047 ,  A63B60/42 ,  A63B2053/0408 ,  A63B2053/0412 ,  A63B2053/0437 ,  A63B2053/045 ,  Y10T29/49764

Abstract: A golf club head comprises a loft angle no less than 18°, a striking face, a sole portion, and a top portion having an exterior surface. In an imaginary vertical plane spaced from a face center by no more than 10 mm and perpendicular to an imaginary striking face plane, an imaginary line segment has a length of 25 mm, a first endpoint located in the imaginary striking face plane, a second endpoint located above the exterior surface, and forms an angle θ with the striking face plane between 55° and 65°. The line segment is tangent to the exterior surface at a first point. A second point is located on the imaginary line segment and spaced from the first point by no less than 1 mm. The second point is spaced from the exterior surface by a gap distance that is no greater than 0.15 mm.