Electronic actuated bleed valve

Details Electronic actuated bleed valve Electronic actuated bleed valve

1979-07-09

1981-11-03

Michalsky, Gerald A.

Valves and valve actuation

Electrically actuated valve

Remote or follow-up control system for electrical actuator

13762564, 251 30, F16K 3102

Patent

active

042981816

ABSTRACT:
A bleed valve assembly which includes a bleed valve seat having a bleed orifice partially defined thereby and a piezoelectric crystal mounted adjacent thereto so that upon bending of the crystal, as by energization thereof, pressure contact is made with an intermediate valve element. The valve element is in turn adapted to move against the bleed valve seat to close the same. When the bleed valve assembly is closed in the manner above described, pressure is permitted to build up in the orifice to modify the position of a main valve with which the bleed valve assembly is utilized. In addition the crystal is beam mounted within a bore in which the valve seat is positioned and essentially in contact with said bore solely at spaced peripheral edge positions thereof.

REFERENCES:
patent: 2887294 (1959-05-01), Hahn
patent: 2928409 (1960-03-01), Johnson
patent: 3152612 (1964-10-01), Avery
patent: 3524474 (1970-08-01), McCormick
patent: 3583443 (1971-06-01), Beckett
patent: 3618636 (1971-11-01), Grimland
patent: 3712339 (1973-01-01), Bartholomaus et al.
patent: 3804120 (1974-04-01), Garnett
patent: 4195811 (1980-04-01), Corrado et al.

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