Motors: expansible chamber type – Constantly applied motive fluid with controlled venting – Fluid vented through working member
Patent
1989-05-15
1991-07-09
Look, Edward K.
Motors: expansible chamber type
Constantly applied motive fluid with controlled venting
Fluid vented through working member
91 51, 91 52, 91189A, 91399, 91408, 91416, 23926533, 60271, 60912, F15B 2104, F02K 115
Patent
active
050295144
ABSTRACT:
A hydraulic actuator system, for use in an aircraft, and in which the servo fluid supply to the system is used to provide for the operation and cooling of the system. The system comprises a hydraulically operated piston mechanism including at least one hydraulically operated piston, a servo vluid input to the system, which is connected in a ring main to a first side of the hydraulically operated piston, a servo fluid output from the system, which is connected in a ring main to a second side of the hydraulically operated piston, a variable restrictor arrangement which provides an interface between the servo fluid input ring main and the servo fluid output ring main, and a restrictor arrangement positioned in the servo fluid output side of the system. The position of the piston of the hydraulic piston and the adjustment thereof, are controlled by the restriction applied on the system by the variable restrictor arrangement.
REFERENCES:
patent: 2729937 (1956-01-01), Hausmann
patent: 3002500 (1961-10-01), Diesing et al.
patent: 3187772 (1965-06-01), Hanson
patent: 3699847 (1972-10-01), Little
patent: 4393751 (1983-06-01), Kelley
patent: 4465497 (1984-08-01), Howeth
patent: 4594936 (1986-06-01), Bacardit
patent: 4771841 (1988-09-01), Uchida et al.
patent: 4781262 (1988-11-01), Nakamura et al.
Dowty Defence and Air Systems Limited
Kapsalas George
Look Edward K.
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