发明名称 Golf club
摘要 The inventive golf club comprises a head of a metal having a face and a flexural range, defined in the face, where the quantity of flexure in a direction perpendicular to the face is at least 45% of the maximum quantity of vertical flexure of the face. The flexural range is arranged in coincidence with a hitting spot distribution range of a player in the face. Alternatively, a flexural range having a spring constant of at least 2 kN/mm and not more than 4 kN/mm is present in the face of the inventive golf club.
申请公布号 US2001051548(A1) 申请公布日期 2001.12.13
申请号 US20010845661 申请日期 2001.04.30
申请人 IWATA MOTOTAKA;ONODA KENJI;SAKAI KOJI;TERANISHI YUKIHIRO;NARUO TAKESHI;OHMORI KAZUHIRO;FUJIKAWA YOSHIHIRO 发明人 IWATA MOTOTAKA;ONODA KENJI;SAKAI KOJI;TERANISHI YUKIHIRO;NARUO TAKESHI;OHMORI KAZUHIRO;FUJIKAWA YOSHIHIRO
分类号 A63B53/04;A63B53/08;A63B59/00;(IPC1-7):A63B53/04 主分类号 A63B53/04
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