Variable magnetic lock

Details Variable magnetic lock Variable magnetic lock

1974-06-17

1976-07-27

Moore, Richard E.

Closure fasteners

Magnetic

E05C 1916

Patent

active

039715817

ABSTRACT:
A variable remote control locking device comprising an electromagnet arranged to contact a ferrous metal plate to lock a door, a variable current supply for controlling the electromagnet, a remote transmitter and a receiver to control the variable current supply. Force exerted by the electromagnet is varied by a signal from the remote transmitter to the receiver which energizes a relay to change the variable current supply, thereby varying the current to the electromagnet and thereby regulate the force required to open the door.

REFERENCES:
patent: 2587983 (1952-03-01), Durand
patent: 2871676 (1959-02-01), Miller et al.

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