BOWLING BALL ACCELERATOR MECHANISM
United States Patent 3425691

Inventors:
Lenhart, Ronald A.
Publication Date:
02/04/1969
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Assignee:
Ronald, Lenhart A.
Primary Class:
473/110
International Classes:
A63D5/02; A63D5/00; A63D5/02
US Patent References:
2969982Ball delivery mechanism for bowling pin spotting machines
3101195Bowling ball impeller
3206199Bowling ball accelerating return system
3313540Variable speed ball lift
3015489Bowling ball stop mechanism




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