Multi-combination push button lock

Details Multi-combination push button lock Multi-combination push button lock

1974-11-06

1976-02-10

Craig,, Jr.,

Locks

Special application

For closures

70298, 70315, 70443, 292175, E05B 3716

Patent

active

039370461

ABSTRACT:
The lock comprises a lock casing in which there is slidably mounted a lock plate movable between a projected locking position and a retracted unlocking position by a manually actuable operating member projecting from the front face of the casing. A plurality of push button assemblies are mounted in the casing, and each assembly includes a push button, an interlock block and a code changer, the push buttons projecting from the front of the casing and the code changers being accessible at the rear of the casing. By operating the push buttons to selected positions in accordance with the "combination", the interlock blocks are positioned to release the lock plate for operation by the actuating member. The code changers are operable to angularly adjust the interlock blocks to set the desired "combination".

REFERENCES:
patent: 1085894 (1914-02-01), Eagle
patent: 1439154 (1922-12-01), Decremer
patent: 2558619 (1951-06-01), Lehman
patent: 3680336 (1972-08-01), Schendel

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