Valves and valve actuation – Fluid actuated or retarded – Flexible wall expansible chamber reciprocating valve actuator
Patent
1979-04-02
1981-01-13
Schwadron, Martin P.
Valves and valve actuation
Fluid actuated or retarded
Flexible wall expansible chamber reciprocating valve actuator
251 30, 251 45, 92 94, F16K 31126
Patent
active
042445540
ABSTRACT:
A valve having a flexible diaphragm for opening and closing the valve. The diaphragm is biased into valve-closing position by a ridge, formed in the valve body, which presses the diaphragm toward the valve seat. A rigid backup washer is secured to the diaphragm solely by an elastomeric type adhesive. A bleed hole in the diaphragm establishes communication between the valve inlet port and a chamber on the side of the diaphragm opposite the valve seat. The bleed hole is in the margin of the diaphragm which is sandwiched between two portions of the valve body.
REFERENCES:
patent: 2208149 (1940-07-01), Vernet
patent: 2305151 (1942-12-01), Fields
patent: 2635635 (1953-04-01), Eimermann
patent: 3038488 (1962-06-01), Welch et al.
patent: 3090592 (1963-05-01), Fleer
patent: 3379406 (1968-04-01), Greer
DiMauro Joseph
Kaemmer Herbert H.
Otto Noel A.
Riefler Roger G.
Automatic Switch Company
Levine Alan H.
Schwadron Martin P.
Walton G. L.
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