Electronic combination lock with high security features
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United States of America Patent
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-
May 14, 1996
Issued Date -
N/A
app pub date -
May 2, 1994
filing date -
Jun 21, 1991
priority date (Note) -
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status (Latency Note)
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Abstract
An electronic combination lock includes a combination lock having a dial with no markings thereon. Rotation of the dial drives a generator which produces electrical pulses. The voltage pulses serves as a power source for the electronics of the lock. The lock also includes a security feature to disable the lock if the combination dial is stopped between dial rotations for a period of time which indicates dailing by an automatic dialer.
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