Servo pressure operated piston arrangements

Details Servo pressure operated piston arrangements Servo pressure operated piston arrangements

1975-08-19

1976-08-03

Rosenthal, Arnold

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

91 49, 91461, 251 44, F16K 3102

Patent

active

039725030

ABSTRACT:
A servo-pressure operated piston arrangement includes a pilot valve which is movable by a torque motor against a biasing spring. A closed chamber is defined between one end of the piston and its surrounding cylinder, and this chamber communicates with an orifice which is shut by the pilot valve, under control of the biasing spring, to lock the piston relative to the cylinder if the torque motor fails.

REFERENCES:
patent: 3105671 (1963-10-01), Teitelbaum et al.
patent: 3934816 (1976-01-01), Terrell et al.

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