Membrane-activated hydraulic actuator
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United States of America Patent
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-
Oct 28, 2003
Grant Date -
Jul 24, 2003
app pub date -
Oct 19, 2001
filing date -
Oct 19, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A hydraulic actuator that is capable of substantial actuation but does not require a conventional pump, uses only deflectable membranes and passive valves, or, at most, a minimum of active valves, and, under certain circumstances, may be free to move when the actuator is de-energized, is provided. The actuator utilizes the deflectable membranes to move fluid throughout the actuator. The movement of the fluid actuates a shaft or other suitable device, as required.
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