Programmable cylinder lock, provided with master keys

Details Programmable cylinder lock, provided with master keys Programmable cylinder lock, provided with master keys

1998-03-06

2000-09-19

Boucher, Darnell M.

Locks

Operating mechanism

Key

70495, 70384, E05B 3510, E05B 2700

Patent

active

061194956

ABSTRACT:
A programmable cylinder lock that is operable with a first key and a first master key having a different shape than the first key, and that is programmable so that the lock is no longer operable with the first key or the first master key. The reprogrammed lock is operable with a second key having a shape different from the first key and with a second master key having a shape different from the first master key.

REFERENCES:
patent: 3999413 (1976-12-01), Raymond et al.
patent: 4015458 (1977-04-01), Mercurio
patent: 4028917 (1977-06-01), Schlage
patent: 4376382 (1983-03-01), Raymond et al.
patent: 4712399 (1987-12-01), Mattossovich
patent: 4729231 (1988-03-01), Wu
patent: 4741188 (1988-05-01), Smith
patent: 4912953 (1990-04-01), Wobig
patent: 4942749 (1990-07-01), Rabinow
patent: 4966021 (1990-10-01), Boag
patent: 5000019 (1991-03-01), Foster
patent: 5079936 (1992-01-01), Stefanek
patent: 5826451 (1998-10-01), Cook

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