ROTARY FLUID PRESSURE DEVICE WITH DRIVE-IN-DRIVE VALVE ARRANGEMENT
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United States of America Patent
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Nov 16, 2015
filing date -
Nov 17, 2014
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Abstract
A rotary fluid pressure device, such as a low-speed, high-torque gerotor motor, is provided with a valve drive shaft that is partially inserted into and engaged with a main drive shaft as the main drive shaft engages a rotating output shaft and engages a rotating and orbiting star member of a positive displacement device. The device is also provided with a drive retainer configured to retain the engagement of the main drive shaft and the valve drive shaft.
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