发明名称 Sport swing training device
摘要 A swing training device is described, comprising a base assembly, a height adjustable stanchion on the base assembly and a spring for flexing built into the stanchion. An adjustable seat for steadying a hitter astride the stanchion, so as to help the hitter to perform a proper weight shift through the executing of a pre-swing stage and a swing stage for hitting a ball. Methods for training a tennis player using the swing training device are also described.
申请公布号 US5769741(A) 申请公布日期 1998.06.23
申请号 US19950487807 申请日期 1995.06.07
申请人 RITCHIE, GREGORY 发明人 RITCHIE, GREGORY
分类号 A63B69/00;A63B69/36;A63B69/38;(IPC1-7):A63B69/36 主分类号 A63B69/00
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