Valves and valve actuation – Fluid actuated or retarded – With mechanical movement between actuator and valve
Patent
1983-07-11
1984-08-28
O'Connor, Daniel J.
Valves and valve actuation
Fluid actuated or retarded
With mechanical movement between actuator and valve
251 611, F16K 3112
Patent
active
044679980
ABSTRACT:
An amplifying pneumatic switch which is responsive to low pressure signals includes a first chamber for receiving an input signal from a first pneumatic pressure source at a first pressure. The first chamber includes a wall formed by a movable, highly resilient diaphragm. A diaphragm plate is disposed generally coextensive with the diaphragm and is responsive to diaphragm movement. A nozzle is coupled to a second source of pneumatic pressure and is sealable for generating a pneumatic output signal at a second pressure. A sealing mechanism including a lever and a plunger coact between the diaphragm and the nozzle for sealing the nozzle in response to the input signal. A spring is provided for biasing the diaphragm plate to a quiescent position in the absence of an input signal.
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Jochman, Jr. Joseph J.
Johnson Service Company
O'Connor Daniel J.
Ryan John Phillip
Shupe Larry L.
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