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Duane W Tressler DeceasedMobile, AL
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Us Patents
Automatic Ball Throwing Machine
US Patent:
4611571, Sep 16, 1986
Filed:
Aug 26, 1985
Appl. No.:
6/769436
Inventors:
Duane W. Tressler - Mobile AL
J. C. McLeod - Grand Bay AL
J. C. McLeod - Grand Bay AL
International Classification:
A63B 6512
US Classification:
124 7
Abstract:
An automatic ball throwing machine comprising a motorized arm for activating a ball receiving arm which is adapted to be positioned under a ball delivery chute and following the delivery of a ball into the receiving arm, a coil spring mounted at the other end of the receiving arm is released whereupon the receiving arm is caused to be projected upwardly and upon reaching its uppermost position the ball is released and projected toward one using the machine to practice hitting the ball with a suitable bat.
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