Electronic combination lock with high security features

Details Electronic combination lock with high security features Electronic combination lock with high security features

1994-05-02

1996-05-14

Swarthout, Brent A.

Communications: electrical

Continuously variable indicating

With meter reading

34082532, 340542, 70278, 341 35, G06F 704

Patent

active

055171842

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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patent: 4684945 (1987-08-01), Sanderford, Jr.
patent: 5061923 (1991-10-01), Miller et al.
"X-07: A Safe Lock that Operates Electronically", 2342 Locksmith Ledger International, vol. 51, No. 9 (Jul. 1991), p. 150.

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