发明名称 GOLF CLUB HEAD
摘要 A hollow golf club head is disclosed, wherein a front member including a face portion and a hosel portion of the club head is made of a material having a specific gravity &rgr;1; a rear member forming a backmost point of the club head is made of a material having a specific gravity &rgr;2; and an intermediate member extending annularly through in a crown portion, a sole portion and a sidewall portion of the head is made of a material having a specific gravity &rgr;3; and the specific gravity &rgr;3 is more than the specific gravity &rgr;1 which is more than the specific gravity &rgr;2.
申请公布号 US2010304888(A1) 申请公布日期 2010.12.02
申请号 US20100787899 申请日期 2010.05.26
申请人 HIRANO TOMOYA 发明人 HIRANO TOMOYA
分类号 A63B53/04 主分类号 A63B53/04
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