Door control system and release mechanism

Details Door control system and release mechanism Door control system and release mechanism

1996-11-22

1998-11-24

Lindsey, Rodney M.

Closure fasteners

Bolts

Sliding

292150, 29234116, 292DIG66, E05C 106

Patent

active

058397663

ABSTRACT:
Fire control systems and release mechanisms. The release mechanisms of the present invention comprise a digital logic circuit for processing signals which are indicative of a condition in an outside environment, and for providing a trigger that will actuate the mechanical release mechanism in response to the condition, a power circuit for providing regulated power to the electronic circuit in response to the input power, the regulated power being used to operate the digital logic circuit, and a power backup circuit interfaced to the power circuit for providing the regulated power for a predetermined time in the event of an input power failure so that the digital logic circuit can be operated for the predetermined time during the input power failure.

REFERENCES:
patent: 1877788 (1932-09-01), Barber
patent: 2733918 (1956-02-01), Fischer
patent: 3151698 (1964-10-01), Pollock
patent: 3650069 (1972-03-01), Alley
patent: 3955840 (1976-05-01), Rawls et al.
patent: 4917419 (1990-04-01), Mora, Jr. et al.
patent: 5082316 (1992-01-01), Wardlaw
patent: 5216909 (1993-06-01), Armoogam
patent: 5551187 (1996-09-01), Brouwer et al.

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