发明名称 Golf club shaft
摘要 A golf club shaft which can enhance the directivity of a golf ball. In the golf club shaft, the kick point and the position at which the torsional rigidity in the circumferential direction is lowest are set at a position distant from the front end portion of the shaft by 30 to 50% with respect to the overall length of the shaft and made to coincide substantially with each other.
申请公布号 US5947839(A) 申请公布日期 1999.09.07
申请号 US19970792730 申请日期 1997.01.31
申请人 DAIWA SEIKO, INC. 发明人 KUSUMOTO, HARUNOBU
分类号 A63B53/10;B32B5/00;B32B5/12;(IPC1-7):A63B53/10 主分类号 A63B53/10
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