发明名称 |
Golf club head |
摘要 |
According to an aspect of this invention, a golf club head includes: a head main body; and a weight material detachably mounted in a weight material mounting portion in the head main body, an external screw thread on the weight material meshing with an internal screw thread in the weight material mounting portion, wherein: the weight material comprises a head portion having the external screw thread and a rod portion which projects from the head portion; and the internal screw thread is provided on an entrance side and a cylindrical portion is provided on a deeper side for engagement with the rod portion in the weight material mounting portion. |
申请公布号 |
US8926449(B2) |
申请公布日期 |
2015.01.06 |
申请号 |
US201313795846 |
申请日期 |
2013.03.12 |
申请人 |
Bridgestone Sports Co., Ltd. |
发明人 |
Sato Fumiaki |
分类号 |
A63B53/08;A63B53/06;A63B53/04 |
主分类号 |
A63B53/08 |
代理机构 |
Sughrue Mion, PLLC |
代理人 |
Sughrue Mion, PLLC |
主权项 |
1. A golf club head comprising:
a head main body; and a weight material detachably mounted in a weight material mounting portion in the head main body, an external screw thread on the weight material meshing with an internal screw thread in the weight material mounting portion, wherein: the weight material comprises a head portion having the external screw thread and a rod portion which projects from the head portion; the internal screw thread is provided on an entrance side and a cylindrical portion is provided on a deeper side for engagement with the rod portion in the weight material mounting portion; an opposite surface of the head portion that is opposite to the top end surface is formed into a recess portion, and a locking recess portion is provided in a deepest bottom surface of the recess portion; the rod portion comprises a small diameter portion which is inserted into the recess portion; and a locking projecting portion which projects from a distal end face of the small diameter portion; and a circumferential edge portion of an entrance of the weight material mounting portion is chamfered to thereby form a chamfered or tapered surface at the edge portion. |
地址 |
Tokyo JP |