Subminiature polarized electrically actuated contactor

Claim 1

AN ELECTRICALLY ACTUATED CONTACTOR, COMPRISING A FERROMAGNETIC SHIELD, MEANS FOR PRODUCING A VARIABLE MAGNETOMOTIVE FORCE INCLUDING A COIL WITHIN SAID SHIELD, FERROMAGNETIC POLAR MEMBERS EXTENDING IN SAID COIL SUBSTANTIALLY PARALLEL WITH THE MAGNETIC AXIS THEREOF, PERMANENT MAGNETIC FIELD PRODUCING MEANS IN SAID SHIELD AND HAVING OPPOSITE POLAR SURFACES ENGAGING RESPECTIVE ONES OF SAID POLAR MEMBERS, A MOVABLE FERROMAGNETIC ARMATURE FORMING OPERATING MAGNETIC GAPS WITH SAID POLAR MEMBERS, THE MUTUALLY REMOTE PORTIONS OF SAID ARMATURE AND SAID POLAR MEMBERS FORMING LOW RELUCTANCE GAPS WITH SAID SHIELD, SAID SHIELD CLOSELY MAGNETICALLY COUPLING SAID MUTUALLY REMOTE PORTIONS OF SAID ARMATURE AND SAID POLAR MEMBERS AND FORMING THEREBETWEEN A RETURN PATH FOR THE OPERATING FLUX OF SAID COIL AND PERMANENT MAGNETIC FIELD PRODUCING MEANS, MEANS SUPPORTING SAID ARMATURE FOR MOVEMENT RELATIVE TO SAID POLAR MEMBERS WHEREBY MOVEMENT OF SAID ARMATURE RELATIVE TO SAID POLAR MEMBERS CHANGES THE RELATIVE MAGNETIC RELUCTANCE OF SAID OPERATING GAPS, SAID ARMATURE HAVING A FERROMAGNETIC PORTION THEREOF EXTENDING TRANSVERSELY IN SAID SHIELD WITH SAID COIL AND SAID PERMANENT MAGNETIC