Electronic key-operable lock and key thereof

Details Electronic key-operable lock and key thereof Electronic key-operable lock and key thereof

1988-05-23

1989-09-19

Locks

Operating mechanism

Using a powered device

70278, 70409, E05B 4700

Patent

active

048669628

ABSTRACT:
A key for an electronic lock is provided with a relief coding for reading by a mechanically actuated reading device. The key has a blade along a narrow edge face of which there are formed grooves (or pairs of notches) extending either perpendicularly to the length of the blade or inclined to the perpendicular in one sense or the other.
A lock is described in which the grooves or notches are read by two separate reading elements and an electronic circuit determines the key coding by detecting whether the reading elements detect the grooves or notches at the same time or in one order or the other.

REFERENCES:
patent: 4712398 (1987-12-01), Clarkson

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