Sequential time-base lock system

Details Sequential time-base lock system Sequential time-base lock system

1974-07-01

1976-05-18

Pitts, Harold I.

Communications: electrical

Systems

Call station

340274R, 340164R, 340149A, G05B 100

Patent

active

039582310

ABSTRACT:
An electronic, push-button, combination door lock or electronic lock system which can only be activated by an individual having knowledge of a predetermined, arbitrary combination. The invention utilizes a series of sequential time-based logic gates to activate the lock system's devices. The system also includes inherent circuitry: (1) which will reset the system to its initial or ground reset state, in the event of a combination error; (2) which will prohibit the combination from activating the lock system's devices, if the combination is registered too rapidly. Every combination entry, made too quickly, is counted as an input error and resets the lock system; (3) which will tally input error factors and trigger alarm circuits or activate any type of defense system, which the degree of security requires.

REFERENCES:
patent: 3633167 (1972-01-01), Hedin
patent: 3731076 (1973-05-01), Nagata
patent: 3805246 (1974-04-01), Colucci

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