发明授权
- 专利标题： Speed indicating ball
- 专利标题（中）： 速度指示球
-
申请号： US359621申请日： 1994-12-20
-
公开(公告)号： US5526326A公开(公告)日： 1996-06-11
- 发明人: Ferenc Fekete , Kai Chung-Ho , Norma Rosenhain
- 申请人： Ferenc Fekete , Kai Chung-Ho , Norma Rosenhain
- 申请人地址： IL Wilmette
- 专利权人： Creata Inc.
- 当前专利权人： Creata Inc.
- 当前专利权人地址： IL Wilmette
- 主分类号： A63B43/00
- IPC分类号： A63B43/00 ; A63B69/00 ; G04F1/00
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.
公开/授权文献
信息查询
