Patent ID: 6604726
Filing Date: 2003-08-12
Classification: F16K,G05D,H01F

Abstract:
A solenoid assembly comprising:a solenoid coil producing a magnetic field, and having a longitudinal axis and a bore coaxial therewith; a magnetic pole piece disposed within said bore of said solenoid coil; and an axially movable armature of magnetic material, supported for axial translation relative to said magnetic pole piece; and wherein said magnetic pole piece includes a first, generally axial portion having an end thereof axially spaced apart from and magnetically coupled with said axially movable armature, a second, generally annular portion continuous with said first, generally axial portion of said magnetic pole piece and being radially spaced apart from said end thereof, and a third, generally radial portion continuous with said second, generally annular portion, and being radially spaced apart from and magnetically coupled with said axially moveable armature.