发明名称 Golf club head
摘要 A golf club head having a face portion that hits a ball, which includes: a center thick portion; a portion of a varying thickness in annular form; and a peripheral thin portion provided around the portion of a varying thickness, where the peripheral thin portion of which the thickness is the smaller than that of the center thick portion. The peripheral thin portion includes a first thin portion and a second thin portion. The first thin portion is provided in at least one portion of a sole portion, a toe portion and a heel portion of the peripheral thin portion.
申请公布号 US2005101407(A1) 申请公布日期 2005.05.12
申请号 US20040968172 申请日期 2004.10.20
申请人 SUMITOMO RUBBER INDUSTRIES, LTD. 发明人 HIRANO TOMOYA
分类号 A63B53/04;(IPC1-7):A63B53/04 主分类号 A63B53/04
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