Electronic combination lock with high security features
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 7, 2000
Issued Date -
N/A
app pub date -
Jul 6, 1998
filing date -
Jun 21, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
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 dialing by an automatic dialer.
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Family
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