发明名称 |
Golf club head |
摘要 |
An iron-type golf club head has a face having a face surface of a flat surface, and a hosel which is continuous with the face on its heel side. A shaft insertion hole is disposed in the hosel. A protrusion protruding rearward in the vicinity of the center in a toe-heel direction is disposed. A material of the golf club head is pure iron having a high purity of at least 99.995%, for instance, a purity within a range of 99.995 to 99.9999%. The golf club head is subjected to carburizing so that carbon diffuses to a range of about 0.2 to 0.5 mm from the surface.
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申请公布号 |
US2005245329(A1) |
申请公布日期 |
2005.11.03 |
申请号 |
US20050115235 |
申请日期 |
2005.04.27 |
申请人 |
BRIDGESTONE SPORTS CO., LTD. |
发明人 |
NISHITANI MASAFUMI;YAMAGISHI HISASHI;KUBOTA MAKOTO;MOTOYOSHI KOKI |
分类号 |
A63B53/04;(IPC1-7):A63B53/04 |
主分类号 |
A63B53/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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