Electronic lock

Details Electronic lock Electronic lock

1978-09-27

1980-09-09

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

340147MD, E05B 4900

Patent

active

042220882

ABSTRACT:
An electronic lock having two normally open electrical contacts as input means, the closing and reopening of said contacts sequentially resulting in the entry of a binary code into a shift register. When the contents of the shift register match a predetermined but resettable programmed code, an integrating one-shot delay is triggered and a relay activated after the delay to open the lock. Momentary or continuous operation may also be programmed and reset for the lock. A power reset function is included to clear the shift register when initial power is applied or in the event of a power failure. The input means may be activated by a single three position, spring return switch or two push buttons.

REFERENCES:
patent: 3751718 (1973-08-01), Hanchett, Jr.
patent: 3784839 (1974-01-01), Weber
patent: 3845362 (1974-10-01), Roe

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