Electronic access control system for use with conventional switc

Details Electronic access control system for use with conventional switc Electronic access control system for use with conventional switc

1984-12-24

1987-03-31

Gelliner, Michael L.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

310543, H01H 4722, E05B 4506

Patent

active

046547452

ABSTRACT:
An electronic access control system is provided including a two dual button self contained sequential code device that can be accommodated in a standard wall box and used in conjunction with a standard toggle switch type wall plate. The device is particularly useful as a disarming mechanism for security systems because of its inconspicuousness. The device comprises an electronic voltage regulator, input circuit network, timing circuit, coding circuit, logic network and output circuit. A condition indicating circuit and tamper circuit are also provided. The logic network preferably comprises an integrated circuit with 9 code inputs and a debouncing circuit arrangement is incorporated in the input network circuit.

REFERENCES:
patent: 3717866 (1973-02-01), Ehrlich
patent: 3772574 (1973-11-01), Hughes
patent: 3828340 (1974-08-01), Bauer, Jr.
patent: 3885408 (1975-05-01), Clark, Jr.
patent: 3940738 (1976-02-01), Teeters
patent: 3958231 (1976-05-01), Hoffman
patent: 4114147 (1978-09-01), Hile
patent: 4258346 (1981-03-01), Williams
patent: 4258358 (1981-03-01), Lee et al.
patent: 4408251 (1983-10-01), Kaplan
Technical Publication LS7228/LS7229 by LSI Computer Systems Inc. dated Feb. 1983 Entitled Address Decorder/Two Pushbutton Digital Lock.

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