Permissive-make electromagnetic switch
AssigneeEsterline Electronics Corporation
InventorJack M. Brown
Life of this patent
Estimating the term…
Abstract
A permissive make double throw electromagnetic switch having maximum efficiency in utilizing electrical energy supplied thereto, though being extremely small and compact for use on printed circuit boards. The means for moving the contact actuator comprises a pivotal armature which carries a permanent magnet and a pole piece whereby the permanent magnet causes the pole piece to be drawn into engagement with the core of an electromagnetic winding to thereby move the armature to a retracted position. Energization of the winding causes the armature to be drawn into attracted position in engagement with the core, the flux path through the armature being directly through the core and other flux-conducting means.
Claims7
A permissive-make double throw electromagnetic switch comprising in combination,
- at least one stationary contact and a pair of movable contacts on opposite sides thereof individually biased toward engagement with said stationary contact,
- an actuator operatively interposed between said movable contacts to alternatively move said movable contacts to disengagement with said stationary contacts against the respective bias,
- an electromagnetic assembly comprising a winding and flux-conducting means associated therewith,
- an armature operatively connected to said actuator and having a first portion pivotally mounted on one end of said flux-conducting means and a second portion movable from retracted to attracted postion on one side of the other end of said flux-conducting means upon energization of said winding,
- and auxilliary magnet means on said armature having a pole piece on the side of said flux-conducting means opposite said one side to move said armature to retracted position upon de-energization of said winding.
Dependencies are inferred from the claim text.