发明名称 Iron golf club head
摘要 There is provided an iron golf club head comprising a head body and a face plate made of a highly resilient metal which is attached to a front face of said head body, wherein a thick-walled portion is formed in the lower central part of said face plate; multiple narrow ribs are formed to radially extend from said thick-walled portion toward the upper and lateral peripheral parts of said face plate, said ribs having a thickness not substantially exceeding the thickness of said thick-walled portion; and broad thin-walled portions are formed between said adjacent ribs.
申请公布号 US2003144080(A1) 申请公布日期 2003.07.31
申请号 US20030351441 申请日期 2003.01.27
申请人 YONEYAMA KOSAKU 发明人 YONEYAMA KOSAKU
分类号 A63B53/04;(IPC1-7):A63B53/04 主分类号 A63B53/04
代理机构 代理人
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