| 摘要 |
<p>A hydraulic actuator that is capable of substantial actuation but does not require a conventional pump, uses only deflectable membranes (112,114,116,118) and passive valves (121-128), 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 (112,114,116,118) to move fluid throughout the actuator. The movement of the fluid actuates a shaft (110) or other suitable device, as required. <IMAGE></p> |
