Magnetic card key operated door lock structure

Details Magnetic card key operated door lock structure Magnetic card key operated door lock structure

1975-05-30

1976-12-07

Gilliam, Paul R.

Locks

Special application

For control and machine elements

70215, 70276, 70387, 70389, 70413, E05B 1310, E05B 3514, E05B 4700, E05B 6300

Patent

active

039954609

ABSTRACT:
A door lock structure adapted to be actuated by a magnetic card key and to actuate a conventional cylindrical door lock with substantially no modification to such door lock. A housing containing the magnetically operated elements of the lock is mounted coaxially relative to the cylinder plug of the conventional lock. Insertion of a properly coded magnetic card releases a locking bar which normally holds the structure in locked position, and the entire assembly may be turned to retract the latch or dead bolt.

REFERENCES:
patent: 440069 (1890-11-01), Stein
patent: 2732703 (1956-01-01), Noregaard
patent: 3633393 (1972-01-01), Hisatsune
patent: 3834197 (1974-09-01), Sedley
patent: 3837195 (1974-09-01), Pelto
patent: 3935720 (1976-02-01), Boving

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