Patent ID: 6305664
Filing Date: 2001-10-23
Classification: F16H,F16K

Abstract:
A fluid control valve comprising:a housing defining a chamber therein;an electromagnetic coil wound on a bobbin and coaxially mounted within the chamber;a movable armature positioned within the chamber and having a first end and a second end, said second end including an extended armature poppet valve, said armature poppet valve including a seal surface;an armature spring in contact with the first end of the armature and the bobbin, wherein the armature is in a first position when the coil is de-energized and wherein the armature moves to a second position in conjunction with the bias of the armature spring when the coil is energized;a pole piece mounted to the housing and positioned adjacent to the second end of the armature and defining an air gap therebetween, said pole piece including an extended ring positioned below the second end of the armature such that the armature poppet valve extends through the ring;a mounting bracket secured to the housing adjacent to the pole piece; anda valve sleeve connected to the mounting bracket and including a central bore axially aligned with the armature, said central bore including a widened portion defining a shoulder therein and said valve sleeve including a control ball positioned in the widened portion adjacent to the armature poppet valve such that when the armature is in the second position, the seal surface of the poppet valve is in contact with the control ball and the control ball is in contact with a seat edge of the shoulder, said valve sleeve including a supply pressure orifice and a control pressure opening, wherein the valve sleeve is adjustable relative to the mounting bracket so as to adjust the distance between the seal surface and the seat edge so as to provide a magnetic force adjustment.