Torque and speed control methods and apparatus for pneumatic motors
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United States of America Patent
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Jan 2, 1996
Grant Date -
N/A
app pub date -
Apr 15, 1994
filing date -
Apr 15, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
Apparatus and methods to facilitate alteration of the torque and speed characteristics of a pneumatic motor to reduce start-up reaction torque and minimize run-on time after disconnection of the motor from a source of pressurized gas. A series connected accumulator and proportional gas flow/control/dump valve are inserted between a pressurized gas supply and a pneumatic motor, after which the accumulator volume is optimized by an iterative method to satisfactorily reduce transient motor start-up reaction torque while maintaining motor run-on time within an acceptable range.
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