Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor
Patent
1994-04-01
1994-12-06
Schwadron, Martin P.
Valves and valve actuation
Fluid actuated or retarded
Pilot or servo type motor
25112915, 251366, F16K 3106
Patent
active
053703545
ABSTRACT:
A hermetic solenoid valve structure and method of forming the same wherein the valve housing includes two sections of thinly formed flexible material are hermetically joined to provide two chambers of selected volume in which a ported piston valve assembly including two separate, relatively moveable piston members is disposed with a solenoid assembly surrounding the valve assembly to control fluid flow through the assembly.
REFERENCES:
patent: 2946551 (1960-07-01), Kovach
patent: 3430918 (1969-03-01), Kolze
patent: 4452424 (1984-06-01), Kawata
patent: 4597558 (1986-07-01), Hafner et al.
patent: 5188339 (1993-02-01), Bartoschek et al.
Emerson Electric Co.
Lee Kevin L.
Schwadron Martin P.
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