Electropneumatic position controller

Details Electropneumatic position controller Electropneumatic position controller

1993-09-29

1995-09-26

Michalsky, Gerald A.

Fluid handling

Systems

Supply and exhaust

13762544, F15B 13043

Patent

active

054527422

ABSTRACT:
Electropneumatic position controller having two solenoid operated pneumatic valves, each of which is respectively provided with a regulating pressure nozzle, an exhaust nozzle, a discharge line leading to a power amplifier, and a hinged armature that is driven by an electromagnetic system and alternatively closes the regulating pressure nozzle or the exhaust nozzle, characterized in that the solenoid valves each respectively comprise a channel that communicates with their exhaust nozzle and can be manually closed, the respective power amplifier being capable of being switched as a result of the closing of said channel even without electrical excitation of the magnet system.

REFERENCES:
patent: 3420494 (1969-01-01), Egner
patent: 4516604 (1985-05-01), Taplin
patent: 4516605 (1985-05-01), Taplin
patent: 4540020 (1985-09-01), Taplin
patent: 4765370 (1988-08-01), Ariizumi et al.
patent: 4922952 (1990-05-01), Kemmler
patent: 4925498 (1990-05-01), Kemmler

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