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公开(公告)号:US5526326A
公开(公告)日:1996-06-11
申请号:US359621
申请日:1994-12-20
申请人: Ferenc Fekete , Kai Chung-Ho , Norma Rosenhain
发明人: Ferenc Fekete , Kai Chung-Ho , Norma Rosenhain
CPC分类号: A63B43/00 , A63B69/0002 , A63B2208/12
摘要: A speed indicating ball includes a timer, which is activated upon throwing of the ball, and deactivated upon catching of the ball, for measuring the ball's time of flight. The timer is connected to a display which provides a direct read out which is inversely proportional to the time of flight of the ball, and which corresponds to the relative velocity of the ball.
摘要翻译: 速度指示球包括定时器,该定时器在投掷球时被激活,并且在捕捉到球时被停用,用于测量球的飞行时间。 定时器连接到显示器,其提供与球的飞行时间成反比的直接读出,并且其对应于球的相对速度。