发明名称 Ball retrieving and storage device
摘要 A ball retrieving and storage device for gathering balls lying upon a court floor or other flat surface and including a wheeled box-like collector having a bar extending across the front of the collector, the bar having a ball engaging surface which is normally carried above the floor at a height slightly less than the diameter of the balls to be collected so that when the device is moved over the floor and the bar contacts a ball, the bar is caused to ride across the top of the ball and trap it within the collector.
申请公布号 US4252490(A) 申请公布日期 1981.02.24
申请号 US19780927098 申请日期 1978.07.24
申请人 KELLER, ERNST 发明人 KELLER, ERNST
分类号 A63B47/02;(IPC1-7):B60P1/00 主分类号 A63B47/02
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