Combination lock with an additional security lock

Details Combination lock with an additional security lock Combination lock with an additional security lock

1988-06-10

1990-02-27

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

70333R, 34082531, 361172, E05B 4506, G06F 704, H01H 4700

Patent

active

049049844

ABSTRACT:
A combination lock is provided with an additional security lock wherein an electrically operable solenoid, having an armature post normally biased outwardly of a solenoid body is mounted to the combination lock housing so as to position the armature post normally to block movement of either the combination lock bolt or the bolt release lever associated with the bolt. An electrical signal generator which may be an electrical switch, electronic lock mechanism or other electrical signal generating means, is provided for selectively operating the solenoid to retract the post from a bolt and/or bolt release lever blocking position to thereafter allow operation of the combination lock in an otherwise standard mechanical manipulation or electronic digital input of the main combination lock.

REFERENCES:
patent: 3702070 (1972-11-01), Gartner
patent: 3702551 (1972-11-01), Blizard
patent: 3981167 (1976-09-01), Phillips
patent: 4148092 (1979-04-01), Martin
patent: 4532785 (1986-08-01), Uyeda
patent: 4628715 (1986-12-01), Uyeda et al.
patent: 4745784 (1988-05-01), Gartner
patent: 4754629 (1988-07-01), Allen
patent: 4756176 (1988-07-01), Uyeda
patent: 4774512 (1988-09-01), Jolidon
patent: 4831851 (1989-05-01), Larson

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