发明名称 Gravitationally restored ball practice device
摘要 A ball practice device including a base secured with a plurality of cushioning pads on the base, a telescopic post erected on the base having an elbow tube telescopically held on the post, and a practice ball and a counterweight ball having a weight slightly heavier than that of the practice ball with the two balls generally symmetrically disposed on opposite ends of a T-shaped connector which is rotatably engageable with a horizontal tube portion of the elbow tube, with the practice ball and the counterweight ball linearly aligned to be perpendicular to the horizontal tube portion of the elbow tube, whereby upon hitting of the practice ball, the practice ball and the counter weight ball will be rotated about the horizontal tube portion, and when stopped, the practice ball will be automatically restored upwardly ready for next hitting while the counterweight ball is gravitationally pendent downwardy.
申请公布号 US5833555(A) 申请公布日期 1998.11.10
申请号 US19970923825 申请日期 1997.09.04
申请人 JER-MIN, LIAW 发明人 JER-MIN, LIAW
分类号 A63B69/00;(IPC1-7):A63B69/40 主分类号 A63B69/00
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