Electronic bolt lock with enhanced security features
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United States of America Patent
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-
Dec 8, 1992
Grant Date -
N/A
app pub date -
Sep 20, 1991
filing date -
Sep 20, 1991
priority date (Note) -
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status (Latency Note)
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Abstract
A high security bolt lock is described having the ability to reencrypt the combination code for the lock each time a key is used and thus partially defeat the use of an unauthorized key. The lock may be operated by a temporary one time use key. The key for the lock carries a data storage means and battery to provide a date/time stamp and key identification for any key used. The key and lock may be coded to only allow access in a particular time block, or only in conjunction with an other key. The access to the lock may be controlled such that two keys must be used in a prescribed order to gain access through the lock.
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