Electronic key locks

Details Electronic key locks Electronic key locks

1990-04-10

1991-04-09

Wolfe, Robert L.

Locks

Operating mechanism

Using a powered device

70134, E05B 4700

Patent

active

050053930

ABSTRACT:
A lock which is adapted to transduce the code from a key by electronic means is constructed to resemble the form and functionality of a conventional mechanical cylinder lock. A main casing houses the bolt, a rotatable thrower or cam for retracting the bolt, an electromechanical release mechanism which normally blocks rotation of the thrower, and a processor to control the release mechanism in response to the detected key code. The electronic reading means are located in association with the keyway of a rotatable barrel in a cylinder unit manufactured as a separate unit from the main casing. The thrower and barrel have respective cooperating mechanical couplings and the main casing and cylinder unit have respective cooperating electrical connectors. The lock is therefore assembled by attaching the cylinder unit to the outside of the main casing, thus establishing a rotary driving connection from the barrel to the thrower and establishing an electrical connection from the key reader to the processor.

REFERENCES:
patent: 4616491 (1986-10-01), Genest
patent: 4633687 (1987-01-01), Fane
patent: 4771620 (1988-09-01), Kleinhany
patent: 4789859 (1988-12-01), Clarkson

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