Optical key reader for door locks

Details Optical key reader for door locks Optical key reader for door locks

1976-05-03

1978-03-21

Frazier, Roy D.

Locks

Operating mechanism

Using a powered device

70DIG51, 356 71, E05B 4700

Patent

active

040796051

ABSTRACT:
An optical key reader for door locks is disclosed including optical scanning means for detecting a code pattern on a key unit when the unit is randomly oriented in an area near a given surface; the detected code being then compared by comparator means with a predetermined code which is stored in the reader. If a match is found in this comparison, the comparator means generates an actuation signal which is coupled to an electrically-actuatable securing means to cause the securing means to allow access through a door.

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patent: 3919527 (1975-11-01), Bowen et al.
patent: 3926021 (1975-12-01), Genest et al.

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