发明名称 Golf club head with center of gravity near its striking face
摘要 The golf club head has a metal face plate, vertically spaced horizontal fins extending rearwardly from the back side thereof, and a central vertical rib between each pair of fins. Weight-carrying inserts are threadedly mounted in the face plate and also extend rearwardly from the back side of the face plate. Molded about the fins, ribs and inserts is a plastic material in the form of rigid or structural foamed polyurethane.
申请公布号 US4213613(A) 申请公布日期 1980.07.22
申请号 US19770865702 申请日期 1977.12.29
申请人 NYGREN, GORDON W 发明人 NYGREN, GORDON W
分类号 A63B53/04;(IPC1-7):A63B53/04 主分类号 A63B53/04
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