Valves and valve actuation – Electrically actuated valve – Having element dimensionally responsive to field
Patent
1987-09-11
1989-05-09
Chambers, A. Michael
Valves and valve actuation
Electrically actuated valve
Having element dimensionally responsive to field
251 65, 1376254, F16K 3108
Patent
active
048282200
ABSTRACT:
A control valve device including a body member having two input ports and an output port is provided with a chamber which communicated with each port therein. A valve member is received in the chamber and is freely movable in the chamber to control fluid communication between either of the input ports and the output port. A piezo-electric element engaged with the body member thrusts the valve member toward either of the input ports by the impression of voltage thereto. A valve hold member holds the valve member for closing either of the input ports by the valve member. The device is changed over by the impulse of the momentary transformation of the piezo-electric element generated when the piezo-electric element is impressed with the voltage.
REFERENCES:
patent: 2991805 (1961-07-01), Page
patent: 3421549 (1969-01-01), Webb
patent: 4176822 (1979-12-01), Chadrick
Aisin Seiki Kabushiki Kaisha
Chambers A. Michael
Fox John C.
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