发明名称 GOLF CLUB HEAD
摘要 <p>PROBLEM TO BE SOLVED: To provide a golf club head capable of improving a carry by lowering the center of gravity even in a deep face, reducing the spin of a ball, and increasing the hitting angle without hindering the appearance of the golf club head and without lowering the strength thereof. SOLUTION: In this golf club head having the hollow structure, a crown part 2 is provided with an opening 2a, and a plate member 5 made of a material having a specific strength >=294 N/mm<2> is installed in the opening 2a. As a result, the golf club head having a volume >=350 cc, the center-of-gravity retreat quantity GR from a shaft axis S >=15 mm, a center-of-gravity position ratio GH/FH obtained from the maximum height FH of a face surface 1a and the center-of-gravity height GH on the face surface 1a <=0.61.</p>
申请公布号 JP2003111874(A) 申请公布日期 2003.04.15
申请号 JP20020226080 申请日期 2002.08.02
申请人 YOKOHAMA RUBBER CO LTD:THE 发明人 NAKAHARA NORIHIKO;NISHIZAWA HIROSHI;MORI TOMOAKI
分类号 A63B53/04;(IPC1-7):A63B53/04 主分类号 A63B53/04
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