Intelligent lock system

Details Intelligent lock system Intelligent lock system

1997-07-28

1998-10-13

Gall, Lloyd A.

Locks

Operating mechanism

Using a powered device

70283, 70389, 70422, 70432, 70434, 70472, E05B 4900

Patent

active

058195637

ABSTRACT:
In a preferred embodiment, a lock system including a lock and a key, including: a lock housing; a rotatable member disposed in the housing, rotation of which rotatable member selectively effects locking and unlocking of the lock; blocking apparatus operatively connected to the rotatable member to prevent unlocking of the lock except upon receipt of an electrical unlocking signal; key apparatus having an end insertable in the housing and into an end of the rotatable member for rotation of the rotatable member; and apparatus to permit a portion of the rotatable member to rotate without damage to any elements of the lock if rotation of the rotatable member is attempted without receipt of the electrical unlocking signal.

REFERENCES:
patent: 2136859 (1938-11-01), Michel
patent: 2475220 (1949-07-01), Chaulk et al.
patent: 4325240 (1982-04-01), Gable
patent: 4546345 (1985-10-01), Naito
patent: 4616491 (1986-10-01), Genest
patent: 4762212 (1988-08-01), Fish et al.
patent: 4909053 (1990-03-01), Zipf, III et al.
patent: 5140317 (1992-08-01), Hyatt, Jr. et al.
patent: 5351042 (1994-09-01), Aston

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