Programmable combination electronic lock

Details Programmable combination electronic lock Programmable combination electronic lock

1983-01-14

1985-04-16

Eisenzopf, Reinhard J.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

34082531, 70278, H01H 4728

Patent

active

045119465

ABSTRACT:
An operating scheme for electronic locks wherein both the key and the lock have a first and second combination. The lock will open when the first key combination equals the first lock combination and the second key combination equals the second lock combination. The lock recombinates to the first key combination and the second key combination when the first key combination equals the second lock combination.

REFERENCES:
patent: 3821704 (1974-06-01), Sabsay
patent: 4148092 (1979-04-01), Martin
patent: 4177657 (1979-12-01), Aydin
patent: 4347545 (1982-08-01), Weishaupt et al.

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