Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Patent
1985-04-09
1987-03-03
Gellner, Michael L.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Multiple contact type
336 67, 336 92, 336198, H01H 6702
Patent
active
046478868
ABSTRACT:
The invention is a coil and armature return spring mounting system for an electromagnetic contactor. One embodiment of the invention is an electromagnetic contactor comprising a housing; a stationary magnetic core having two arms and a connecting link, the stationary magnetic core mounted in the housing and fixedly attached thereto; a coil assembly having two winding bobbins mounted in a coil cup and placed around the stationary magnetic core so that each winding bobbin surrounds one arm of the stationary magnetic core; a moveable magnetic armature; a carrier fixedly attached to the moveable armature; at least two compression springs, each mounted having a first end bearing against the coil assembly and each having a second end bearing against the carrier so that the springs force the moveable armature away from the stationary magnetic core when the coil assembly is not energized, and when the coil assembly is energized magnetic forces generated from the energization urge the moveable armature to move toward the stationary magnetic core thereby compressing the at least two springs, so as to hold the coil assembly in place as the armature moves toward the stationary magnetic core thereby dampening bounce of the coil assembly as the armature comes to rest.
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Schmiedel James P.
Tschanz Lee R.
Brown Brian W.
Gellner Michael L.
Johnston A. Sidney
Square D Company
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