Electromagnetic shear lock

Details Electromagnetic shear lock Electromagnetic shear lock

E - Fixed Constructions

05

C

70/3

E05C 17/16 (2006.01) E05C 19/16 (2006.01)

Patent

CA 1296197

ABSTRACT An electromagnetic shear lock comprising an electromagnet having an E-shaped cross section with a coil positioned about the middle leg of the E is mounted in a doorway and an armature having a centrol projection is mounted to the door, where the middle leg of the E is shortened to define a recess to receive the armature projection and provide mechanical reinforcement against shearing when the electromagnet is energized. The inner edges of the outer legs of the E and the edges of the armature projection are matingly beveled to prevent binding when the electromagnet is de-energized and an airgap is defined between the middle leg of the E and the armature projection to overcome any effects of residual magnetism.

543020

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