发明名称 Sports training device
摘要 A training device for improving one's swing in a particular sport having a weighted member flexibly tethered to a handle. The handle is gripped swinging the weighted member against a target.
申请公布号 US8172696(B2) 申请公布日期 2012.05.08
申请号 US201113224952 申请日期 2011.09.02
申请人 LUM CALVIN KWAI ON;CALGOLF LLC 发明人 LUM CALVIN KWAI ON
分类号 A63B69/36 主分类号 A63B69/36
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