Patent ID: 6994406
Filing Date: 2006-02-07
Classification: B60T,F16K,H01F

Abstract:
1. A coil operated control valve comprising: a valve seat; a pole piece defining at least a first pole shoulder and a second pole shoulder that are both stationary relative to said valve seat; a coil for selectively inducing a magnetic flux in said pole piece; an armature moving a valve portion relative to said valve seat to control flow of a fluid through said valve seat, said armature defining at least a first armature shoulder and a second armature shoulder, said first armature shoulder cooperating with said first pole shoulder to define a first lateral flux gap and said second armature shoulder cooperating with said second pole shoulder to define a second lateral flux gap; and a closed tube structure formed by a sleeve wherein said sleeve forms a pressure boundary about the armature, and the armature is disposed within said sleeve, and said coil is disposed outside said sleeve.