Portable spring type impact ball pitching device

Details Portable spring type impact ball pitching device Portable spring type impact ball pitching device

1997-01-13

1999-11-02

Brown, Theatrice

Amusement devices: games

Surface projectile game; game element

Projectors

124 7, 124 36, A63B 7100

Patent

active

059755270

ABSTRACT:
In a baseball, softball tennis practice ball throwing machine having a spring actuated pivot arm having a ball impact element at a free end thereof and biasing spring elements at its pivot end. A hand crank is attached to a pivot shaft for rotating the arm against the bias of the spring elements. A ball support station is provided to support a ball in the path of the ball impact element to be impacted and projected a distance by the arm as it rapidly rotate about the pivot shaft when under the influence of the biasing spring elements.

REFERENCES:
patent: 1268187 (1918-06-01), Velk
patent: 2815743 (1957-12-01), Brunderman
patent: 3838677 (1974-10-01), Alvares
patent: 4237851 (1980-12-01), Haller
patent: 4254755 (1981-03-01), Morgan
patent: 4368885 (1983-01-01), Katada et al.
patent: 4699378 (1987-10-01), Sung

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