Method and apparatus for controlling a bowling ball lift mechanism
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United States of America Patent
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-
Sep 13, 1988
Grant Date -
N/A
app pub date -
Nov 13, 1987
filing date -
Nov 13, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Method and apparatus for controlling and operating the return ball lift mechanism in a bowling alley. In a preferred embodiment the motor which drives the lifting belt is normally inoperative and it is actuated when a ball arrives to be lifted into the storage rack. A photo detector is utilized to detect the presence of the returning ball and provision is made to actuate the motor for a total of four seconds. In the event a second ball arrives before the end of four seconds, timing begins all over again. A feature of the invention is the elimination of a centrifugally operated switch to control the START winding of the motor as a solid state timer controls the operation of both windings of the motor.
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