Hydraulic servo valve

Details Hydraulic servo valve Hydraulic servo valve

1980-04-23

1982-08-03

Cline, William R.

Fluid handling

Systems

Multi-way valve unit

91459, 13759616, 13762564, 137806, 251 30, F16K 1107

Patent

active

043423345

ABSTRACT:
A hydraulic servo valve suitable for controlling flow of a pressurized fluid in dirty and explosive environments, comprises a control valve actuated by a contamination-free sealed pilot circuit of electroviscous fluid commanded by electroviscous valves requiring minimal electrical power. Fluid is circulated in the pilot circuit by pressure pulses derived from the pressurized fluid by means of a fluidic oscillator and transmitted to the pilot circuit via flexible diaphragms.

REFERENCES:
patent: 2605079 (1952-07-01), Miller et al.
patent: 3302532 (1967-02-01), Graham
patent: 4038511 (1977-07-01), Yamaga et al.

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