Patent ID: 9435460
Filing Date: 2016-09-06
CPC Classification: F16K

Claim Text:
1. An electromagnetic actuator, comprising: a solenoid coil and an armature housing, providing an armature chamber, constructed and arranged to receive a movable armature including a distal part; a membrane arranged to enclose at least partially said distal part to seal armature fluid inside said armature chamber providing a volume in which said armature fluid is enclosed, said armature being constructed to control flow of fluid through a valve passage by a linear displacement of said distal part caused by a coil drive current applied to said solenoid coil thereby acting on said armature, said displacement of said distal part displaces said membrane with respect to said valve passage controlled by said actuator; a fluid passage arranged within said armature and constructed to enable force-balancing fluid displaced between a proximal part and a distal part of said armature during said displacement; and a radial magnet arranged to maintain said armature in a stationary position by a force of a magnetic field.