Locking system

Locks – Operating mechanism – Combination

Patent

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Details

70315, E05B 3716

Patent

active

039980790

ABSTRACT:
An improvement in a locking system of the type having a series of reference combinations arranged serially upon a tape. A combination entered into said system is compared with the reference combination, and if both combinations are complementary, a lock in the system is released.
The improvement comprises apparatus for preventing the unlocking of the system when all the reference combination setting fingers are depressed, or alternately when all the reference combination setting fingers are in a non-depressed position.

REFERENCES:
patent: 1416250 (1922-05-01), Wismiewski
patent: 3664231 (1972-05-01), Hanson
patent: 3869885 (1975-03-01), Uthenwoldt

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