Opto-electronic lock device

Details Opto-electronic lock device Opto-electronic lock device

1977-02-04

1978-05-16

Pitts, Harold I.

Communications: electrical

Digital comparator systems

340149A, 340274C, 340149R, 70363, H04Q 300

Patent

active

040901750

ABSTRACT:
An opto-electronic, key-operated lock device means which provides a connection for one or more opto-electric circuits (control circuits employing light and logic for control of electrical circuits) as an incident to the insertion and operation therein of the proper key. The proper key is encoded for completion of predetermined light paths to photosensors coupled to decoder logic circuits for establishment and disestablishment of the opto-electrical circuits coincident with the use of the proper key.

REFERENCES:
patent: 2036738 (1936-04-01), Zygmunt
patent: 2618957 (1952-11-01), Tonnessen
patent: 2772557 (1956-12-01), Audicio
patent: 3500326 (1970-03-01), Benford
patent: 3688269 (1972-08-01), Miller
patent: 3786471 (1974-01-01), Hochman
patent: 3893314 (1975-07-01), Raymond

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