Patent ID: 6304161
Filing Date: 2001-10-16
Classification: F01L

Abstract:
An electromagnetic actuator in combination with a driven component, comprising(a) first and second electromagnets having respective first and second pole faces oriented toward one another and defining a space therebetween;(b) an armature disposed in said space and movable back and forth between said first and second pole faces in a direction of motion;(c) a driving component attached to said armature for moving therewith as a unitary structure;(d) an adjusting mechanism for setting a mid position of said armature between said first and second pole faces;(e) a spring unit attached solely to one of said driving component and said driven component and exerting forces opposing movements of said armature caused by electromagnetic forces generated by said electromagnets; said spring unit being in a relaxed state when said armature is in said mid position and being in an armed state upon movement of said armature in either direction from the mid position; and(f) means for connecting said driving component with said driven component for effecting a transmission of moving forces from said driving component to said driven component to cause displacements of said driven component as a function of displacements of said armature and said driving component.