Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor
Patent
1998-08-25
2000-03-14
Walton, George L.
Valves and valve actuation
Fluid actuated or retarded
Pilot or servo type motor
123 4112, 123 4149, 251 38, 251 44, F16K 3104, F16K 31383, F16K 3142
Patent
active
060361670
ABSTRACT:
Solenoid-actuated control valves having low hysteresis include an annular flux housing with an axial bore extending therethrough. A coil configured to generate a magnetic field is disposed within the flux housing. A magnetic pole piece is disposed within the flux housing axial bore. A magnetic armature is slidably secured within the flux housing axial bore. A spring, positioned between the pole piece and armature, is configured to urge the armature away from the pole piece. A spool valve, slidably secured within a spool sleeve, is mechanically coupled with the armature such that the spool valve follows movement of the armature as a slave.
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Fasco Controls Corp.
Walton George L.
LandOfFree
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