Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor
Patent
1976-12-30
1979-02-06
Schwadron, Martin P.
Valves and valve actuation
Fluid actuated or retarded
Pilot or servo type motor
91186, 91363A, 92 73, 92146, 13762564, F16K 3112, F01B 100
Patent
active
041380886
ABSTRACT:
A device for controlling hydraulic motors as in an aircraft "fly-by-wire" system wherein redundant hydraulic motors and controls are required to protect against failure of portions of the system or device. The device includes two master valves for controlling flow of fluid to and from the motors, one controlled by electrical signals from a command station and the other controlled mechanically through manual or automatic operation. There is a transfer valve for selecting which of the master valves is to be operable and to provide for smooth transition of control from the electrically controlled valve to the mechanically controlled valve. The electrically controlled valve is positioned by means of an articulated command shaft of hybrid force displacement summing structure having redundant hydraulic drive units each controlled by redundant electro-hydraulic servo valves and wherein failed servo valves are accounted for in the force displacement summing structure in a manner to avoid the need for rapid failure detection and correction.
REFERENCES:
patent: 3263572 (1966-08-01), Sunderland
patent: 3585902 (1971-06-01), Anderson
patent: 3750532 (1973-08-01), Kubilos
patent: 3817150 (1974-06-01), Cox
patent: 3915427 (1975-10-01), Swogger
Hershkovitz Abraham
Parker-Hannifin Corporation
Schwadron Martin P.
Wolfram John N.
LandOfFree
Device for controlling hydraulic motors does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for controlling hydraulic motors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for controlling hydraulic motors will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-888421