发明名称 Ball-suspending device and modified ball
摘要 A device for practicing striking a standard sports ball that also has means to be held against gravity and released upon sufficient impact. A ball contains means for both retaining and releasing itself from a mating pivotable, attachment arm that is generally downwardly supported to allow the ball to be suspended above the ground, be struck, released and propelled in a preferred downward trajectory, e.g. a volleyball spike. The ball is usually retained on a minor portion of the upper 75 percent (relative to vertical) of the outer surface of the suspended ball so that its propelled trajectory and the striker's path are essentially not hindered before, during and after the strike and release.
申请公布号 US5913739(A) 申请公布日期 1999.06.22
申请号 US19970811260 申请日期 1997.03.04
申请人 BRENNEISEN, SCOTT MICHAEL 发明人 BRENNEISEN, SCOTT MICHAEL
分类号 A63B43/00;A63B69/00;(IPC1-7):A63B69/00 主分类号 A63B43/00
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