Electronic delayed egress locking system

Details Electronic delayed egress locking system Electronic delayed egress locking system

1992-10-22

1995-07-04

Lindsey, Rodney M.

Closure fasteners

Bolts

Emergency operating means

2922515, 292DIG65, E05B 6510

Patent

active

054293995

ABSTRACT:
A security system for use on doors which have an electrically operated door locking mechanism is disclosed, which security system is operative to provide a preset egress time delay following an effort to exit through the controlled door before actuating the door locking mechanism to unlock the door and allow egress. During the egress time delay, the system provides a visual input of the time remaining until the door locking mechanism will unlock the door to allow egress or access therethrough. In the preferred embodiment, a speech synthesizer and digital display is also utilized to inform the individual demanding egress or access of the delay, and to provide other information as desired.

REFERENCES:
patent: 4328985 (1982-05-01), Logan
patent: 4439808 (1984-03-01), Gillham
patent: 4609910 (1986-09-01), Geringer et al.
patent: 4652028 (1987-03-01), Logan et al.
patent: 4652862 (1987-03-01), Verslycken
patent: 4762350 (1988-08-01), Hurtado
patent: 4763937 (1988-08-01), Sittnick, Jr. et al.
patent: 4803482 (1989-02-01), Verslycken
patent: 4986099 (1991-06-01), Johnson et al.
patent: 5000497 (1991-03-01), Geringer et al.

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