Patent ID: 6036167
Filing Date: 2000-03-14
Classification: F01P

Abstract:
A flow control apparatus, comprising:an annular flux housing having an axial bore extending therethrough;a coil configured to generate a magnetic field disposed within said flux housing;a magnetic pole piece disposed within said flux housing axial bore;a magnetic armature slidably secured within said flux housing axial bore;biasing means positioned between said pole piece and said armature, said biasing means configured to bias said armature away from said pole piece;a spool sleeve secured to said flux housing, said spool sleeve having a supply port and an exhaust port; anda spool valve slidably secured within said spool sleeve, said spool valve mechanically coupled with said armature such that said spool valve follows movement of said armature as a slave while remaining in contact with said armature in all positions thereof, said spool valve configured to control fluid entering said supply port and exiting said exhaust port.