Electronic lock system for door latch assembly

Details Electronic lock system for door latch assembly Electronic lock system for door latch assembly

1994-07-14

1995-12-05

Ro, Bentsu

Electricity: motive power systems

Motor-reversing

Automatic and/or with time-delay means

318265, 70277, E05B 4700

Patent

active

054732360

ABSTRACT:
An electronic lock assembly mounts to the opposite sides of a door to provide an electronically operable level of security. An electronic reader generates a signal which is employed to control the operation of a conventional latch installation. A card reader, key pad or contact activatable data port generates a signal to actuate a motor to disengage a locking dog to thereby allow rotation of the latch handle. The motor shaft is connected to a drive screw by a coil spring to permit proper operation if a jamming condition is present.

REFERENCES:
patent: 3622991 (1971-11-01), Lehrer et al.
patent: 4433355 (1984-02-01), Chew et al.
patent: 4534194 (1985-08-01), Aydin
patent: 4616491 (1986-10-01), Genest
patent: 4833465 (1989-05-01), Abend et al.
patent: 4848115 (1989-07-01), Clarkson et al.
patent: 5020345 (1991-06-01), Gartner et al.
patent: 5437174 (1995-08-01), Aydin

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