Patent ID: 8729995
Filing Date: 2014-05-20
Classification: F02M,H01F

Abstract:
1. A solenoid comprising: a stator assembly including: a housing that includes a top piece defining a pin bore a fragile highly magnetic core extending between a top end and an armature end; a coil winding positioned around the fragile highly magnetic core; a centerpiece extending completely through the fragile highly magnetic core with one end received in the pin bore, and an opposite end including a core shield covering the armature end of the fragile highly magnetic core; the core shield including an armature stop; and a flux ring; an armature assembly including: a pin movable between an energized position and a de-energized position; an armature attached to move with the pin, and being movable within the flux ring, but being separated from the flux ring by a sliding air gap; and one of the stator assembly and the armature assembly including a non-magnetic insert that moves into and out of contact with an other of the stator assembly and the armature assembly at the energized position and the de-energized position, respectively.