Patent ID: 6078235
Filing Date: 2000-06-20
Classification: F01L,H01F

Abstract:
An electromagnetic actuator for operating a setting member, comprising(a) two electromagnets each having a first outer lateral surface and a second outer lateral surface opposite said first outer lateral surface; each said electromagnet including(1) a respective housing made of a non-magnetic material and defined by a housing wall having a first outer lateral surface constituting one part of said first outer lateral surface of said electromagnet and a second outer lateral surface constituting one part of said second outer lateral surface of said electromagnet;(2) a recess provided in said housing wall;(3) a yoke body fixedly held in said housing and occupying said recess; said yoke body having(i) a first outer lateral surface constituting one part of said first outer lateral surface of said electromagnet;(ii) a second outer lateral surface constituting one part of said second outer lateral surface of said electromagnet; and(iii) an end surface constituting a pole face of the electromagnet; said yoke body forming a lateral face of said electromagnet in a region of said first and second openings; and(4) a solenoid supported by said yoke body and being fixedly held in said housing;(b) spacers interconnecting said electromagnets in a mirror image to one another and maintaining the housings of the two electromagnets separated from one another;(c) an armature movable towards and away from the pole faces of said electromagnets in said space;(d) two oppositely acting resetting springs opposing motions of said armature towards respective said pole faces;(e) means for guiding said armature in displacements thereof; and(f) means for coupling said armature to the setting member.