Electronic combination lock security system
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United States of America Patent
Stats
-
Jul 30, 1996
Issued Date -
N/A
app pub date -
Jul 26, 1994
filing date -
May 11, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electronic security system includes an electronic lock mechanism and an electronic key, each of which is provided with a microprocessor controller and a memory storing data including an ID code and encryption key codes. The lock microprocessor may either change ID codes stored in its memory or encrypt a seed number to be used for determining access to the lock. A novel combination dial electronic lock utilizes the electronic lock and key in association with a conventional combination lock dial to prevent rotation of the combination dial unless an authorized electronic key has been inserted into the electronic lock.
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