发明名称 Power swing training bat
摘要 The power swing training device of the invention is a tethered, truncated, training device attached by flexible elastic to a fixed anchor point, or to a pulley and weight system. A swivel attachment is attached to the distal end of the training device and a flexible yoke is attached to the swivel attachment, and an elastic cord is attached to the yoke at one end and to a fixed point at the other. In a second embodiment, a cord is hung on a pulley attached to an anchor and a weight is placed at the other end.
申请公布号 US6592474(B1) 申请公布日期 2003.07.15
申请号 US20020187243 申请日期 2002.07.02
申请人 HALSWORTH ROBERT M. 发明人 HALSWORTH ROBERT M.
分类号 A63B15/00;A63B21/055;A63B69/00;A63B69/36;A63B69/38;(IPC1-7):A63B69/00 主分类号 A63B15/00
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