Time delay relay movement

Details Time delay relay movement Time delay relay movement

H - Electricity

01

H

306/265

H01H 7/03 (2006.01) H01H 43/28 (2006.01)

Patent

CA 1112273

TIME DELAY RELAY MOVEMENT Abstract of the Disclosure An improved movement for a time delay relay cooper- ates with an electromagnet and a timer to provide either "On Delay" or "Off Delay" operation of the relay contacts. The movement has an elongated operating plunger that is movable in forward and backward strokes, a latch, and a contact actuator coupling the latch to the relay contacts. A pair of springs are disposed in a spring cage formed in the actuator and at least one spring-compressing flange is carried by the plunger and disposed between the springs. In the on delay mode of operation, one spring is loaded against the actuator upon a forward stroke of the plunger. In the off delay mode of operation, the other spring is loaded against the actuator upon a backward stroke of the plunger. The latch is restrained upon the movement of the plunger to load one of the springs, and is subsequently released from its restraint after a time delay to operate the relay contacts with spring action.

322353

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