Baseball batting practice apparatus

Details Baseball batting practice apparatus Baseball batting practice apparatus

1976-01-26

1977-03-08

Grieb, William H.

Amusement devices: games

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

Target

A63B 6900

Patent

active

040109500

ABSTRACT:
Baseball batting practice apparatus includes a shaft for detachable connection to a vertical wall and a pair of rotatable gear elements mounted thereon. One of the gear elements is an internal gear and the other gear element is an external gear having a lesser number of teeth and eccentrically mounted so as to mesh with the internal gear in one diametral region. A spring is carried by the shaft and urges the external gear into engagement with the internal gear. A ball is suspended from a hub section which is integral with the internal gear. Striking of the ball causes it to rotate on the hub and effects relative rotation between the gears. Indicia on both of the gears indicates the degree of relative rotation and correlates with the impact force on the batted ball.

REFERENCES:
patent: 2606025 (1952-08-01), Hornig
patent: 2976040 (1961-03-01), Bales
patent: 3454275 (1969-07-01), Pontone
patent: 3588104 (1971-06-01), Griffin
patent: 3767198 (1973-10-01), Boyer
patent: 3830494 (1974-08-01), Biskup
patent: 3837654 (1974-09-01), Hall

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