发明名称 GOLF CLUB
摘要 A golf club includes a shaft and a head. The shaft has a torque of the entire length of the shaft of from 3 to 5°. In the torsional rigidity distribution of the shaft, an integrated value of the torsional rigidity on the grip end side of the shaft is at least 85% of the integrated value of the torsional rigidity of the entire length of the shaft. The head has a distance to the center of gravity of from 25 mm to 35 mm and has a gravity center angle of from 10° to 20°.
申请公布号 US2013260910(A1) 申请公布日期 2013.10.03
申请号 US201313850905 申请日期 2013.03.26
申请人 BRIDGESTONE SPORTS CO., LTD. 发明人 SATO FUMIAKI
分类号 A63B53/10 主分类号 A63B53/10
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