Load-adaptive hybrid actuator system and method for actuating control surfaces
March 16, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1996466 3679156 3794276 Redundant EHV fault detector Redundant control actuation system-concentric direct drive valve Hydraulic drive system having a plurality of prime movers Pressure equalization of multiple valves Check device for a redundant flight control apparatus Electro-hydraulic actuator systems Aircraft flight control system InventorAssigneeApplicationNo. 496069 filed on 03/16/1990US Classes:60/403, Apparatus having means responsive to or ameliorating the effects of breakage, plugging, mechanical failure or power failure60/430, Pressure or volume responsive means shifts the relationship244/226FluidExaminersPrimary: Barefoot, Galen L.Attorney, Agent or FirmForeign Patent References
International ClassB64C 003/40AbstractAn actuator system for a control surface of an aircraft having a hydraulic system and a source of actuation system commands. The actuator system includes hydraulic circuits connected to the aircraft hydraulic system and an electrically-powered hydraulic circuit integrated with the actuator. The electrically-powered hydraulic circuit includes an electric motor connected to a hydraulic fluid pump. The pump can be controlled to adapt to the power requirements to actuate the control surface.Other References
Field of SearchAutomaticFluid With electric control Having (1) stand-by or (2) redundant means enabling load to be driven upon failure of primary load moving means Stand-by means utilizes an auxiliary motive fluid source for another working member to drive same load Apparatus having means responsive to or ameliorating the effects of breakage, plugging, mechanical failure or power failure Stand-by stored energy means activated responsive to malfunction or power failure Second motive fluid supply means takes load responsive to failure of first Output means locked, positioned or released on failure of motive fluid supply means Having condition responsive control in a system of separately operable power input pumps, pump motors, pump cylinders or pressure fluid sources With externally operated multiway valve changing the relationships of the motive fluid pressurizing or supplying means Pressure or volume responsive means shifts the relationship Pump displacement varied responsive to position of motor or output device Of by-pass of motor, pump or flow control element Having plural energy outputs (e.g., plural motors, etc.) | |
