Rotary piston type actuator with hydraulic supply
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United States of America Patent
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Mar 14, 2017
Grant Date -
Aug 28, 2014
app pub date -
Apr 22, 2014
filing date -
Feb 27, 2013
priority date (Note) -
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Abstract
A rotary actuator includes a housing defining a first arcuate chamber comprising a cavity, a fluid port in fluid communication with the cavity, and an open end. A rotor assembly in the housing includes an output shaft and a rotor arm extending radially outward from the output shaft. An arcuate-shaped piston is disposed in the housing for movement in the arcuate chamber. The rotary actuator includes a fluid line is coupled to the fluid port, a high pressure fluid line, a low pressure fluid line, and a central pressure source coupled to the high pressure fluid line. A servo valve is positioned between the central pressure source and the hydraulic actuator and is controllable to selectively connect the fluid line to the high pressure fluid line and the low pressure fluid line to control movement of the hydraulic actuator.
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