Solenoid-operated valve for selecting one of two pressure source

Details Solenoid-operated valve for selecting one of two pressure source Solenoid-operated valve for selecting one of two pressure source

1983-05-11

1985-03-26

Michalsky, Gerald A.

Fluid handling

Systems

Supply and exhaust

137870, 251 65, 251137, 251139, F15B 13044

Patent

active

045067015

ABSTRACT:
A solenoid-operated valve for selecting one of two pressure sources has a stationary core which comprises a cylindrical magnetic body which is energized by an excitation current of selected direction and which is housed in a cylindrical valve housing. First and second magnet chambers communicating with first and second pressure sources at two ends of the stationary core are defined in the portions of the housing which oppose first and second pole faces. First and second permanent magnets which are magnetized to the poles opposite to those of the first and second pole faces are respectively housed in the first and second magnet chambers. A first valve member is formed integrally with the first permanent magnet and closes a vent hole communicating with the first pressure source when the first permanent magnet is repelled from the first pole face. A second valve member is formed integrally with the second permanent magnet and closes a vent hole formed in the stationary core when second permanent magnet is attracted to the second pole face.

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