Touch bar release locking system

Details Touch bar release locking system Touch bar release locking system

1988-09-08

1989-10-03

Moore, Richard E.

Closure fasteners

Magnetic

2923363, 70276, E05B 4700

Patent

active

048712043

ABSTRACT:
The touch bar release locking system includes a hollow metal channel which affixes to a door at two points via insulating spacer blocks. Within the channel is housed a capacitive sensor which functions by detecting the additional capacitance coupled to the hollow channel by the act of a person touching it (even through gloves or clothing). When the additional capacitance is detected, a relay energizes and actuation of the relay contacts releases an electric lock which had been securing the door, thereby providing free egress. In the event of catastrophic sensor failure, egress can still be accomplished by pressing an electromechanical push button, mounted on the rear of the hollow channel, which duplicates the effect of energization of the sensor relay.

REFERENCES:
patent: 3495353 (1968-09-01), Forsberg
patent: 3496381 (1968-05-01), Wisnia
patent: 4168495 (1979-09-01), Sweeney
patent: 4287513 (1981-09-01), Lam et al.
patent: 4652862 (1987-03-01), Verslychen
patent: 4682801 (1987-07-01), Cook et al.
patent: 4763937 (1988-08-01), Sittnick, Jr. et al.

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