Apparatus for evaluating ball pitching performance

Details Apparatus for evaluating ball pitching performance Apparatus for evaluating ball pitching performance

1991-11-08

1993-07-27

Brown, Theatrice

Amusement devices: games

Aerial projectile game; game element or accessory therefor...

Target

273371, 2502222, 2502062, 356 28, A63B 6940

Patent

active

052305058

ABSTRACT:
There is disclosed an apparatus for monitoring and calculating the position and speed of a projectile as it is pitched over a target zone. A grid of infrared emitters aligned with respective infrared receivers are in continuous optical links until the ball passes an d cuts some of the links. Upon this cut, the position of the ball is stored in memory and the time of passage of the ball across the grid is recorded to later calculate the speed of the ball. The infrared grid is enclosed in a chamber to prevent interference of external light rays with the reception of the receivers.

REFERENCES:
patent: 3229975 (1966-01-01), Tompkins et al.
patent: 4180726 (1979-12-01), De Crescent
patent: 4304406 (1981-12-01), Cromarty
patent: 4563005 (1986-01-01), Hand
patent: 4657250 (1987-04-01), Newland et al.
patent: 4770527 (1988-09-01), Park
patent: 4830369 (1989-05-01), Poitras
patent: 4949972 (1990-08-01), Goodwin et al.
patent: 4979745 (1990-12-01), Kobayashi

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