Valves and valve actuation – Electrically actuated valve – Having element dimensionally responsive to field
Patent
1989-11-03
1991-02-26
Rosenthal, Arnold
Valves and valve actuation
Electrically actuated valve
Having element dimensionally responsive to field
251 57, 310311, 310328, 92 84, F16K 3104
Patent
active
049955870
ABSTRACT:
An electromechanical motion amplifier in accordance with this invention is useful for controllably converting an input displacement into an amplified output displacement. This device comprises a first piston movable within a predetermined range of travel along an axis in response to the input displacement, and a second piston movable within a predetermined amplified range of travel along such axis. Force transmission means cooperating with the first and second pistons is utilized for effecting movement of the second piston in response to movement of the first piston. The relationship between the first and second pistons is such that movement of the first piston along the axis produces amplified movement of the second piston along the axis in a selected direction. In a preferred embodiment, the force transmission means is an elastomer, and the second piston is connected to a valve located in a nearby chamber, so as to directly control the positioning of the valve. The chamber is designed to contain a fluid under pressure, and the valve is designed to interact with a valve seat located on an outlet in the sidewall of the chamber. The positioning of the valve with respect to the valve seat thus serves to selectively control the flow of fluid out of the chamber.
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Chin Gay
Martin Marietta Corporation
Renfro Julian C.
Rosenthal Arnold
Slonecker Michael L.
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