Speed indicating ball

Details Speed indicating ball Speed indicating ball

1994-12-20

1996-06-11

Roskoski, Bernard

Horology: time measuring systems or devices

Combined with disparate device

368101, 273 55R, 273 60R, G04F 100

Patent

active

055263267

ABSTRACT:
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.

REFERENCES:
patent: 4775948 (1988-10-01), Dial et al.
patent: 5163014 (1992-11-01), Calimeri

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