High security key operated lock

Details High security key operated lock High security key operated lock

1996-08-30

1998-06-02

Barrett, Suzanne Dino

Locks

Operating mechanism

Key

70404, 70411, E05B 2100

Patent

active

057585253

ABSTRACT:
A lock and a key are provided wherein the key is used in conjunction with the lock. The key has a stop bit and a series of coding bits along its shank. The stop bit and each coding bit have a leading edge and a trailing edge to provide coding of the key and to form one side of a groove. The lock has a housing having a key-actuated cogwheel assembly. The cogwheels are registered with a keyhole and are spaced for engagement by the coding bits of the key. A driven cogwheel assembly has a series of cogwheels that mesh with a corresponding key-actuated cogwheel. A lock bolt is projected and retracted between two positions by a lock bolt actuating mechanism responding to position of the stop bit and coding bits.

REFERENCES:
patent: 8071 (1851-05-01), Yale, Jr.
patent: 17293 (1857-05-01), Perry
patent: 370183 (1887-09-01), Doremus
patent: 374784 (1887-12-01), Doremus
patent: 940300 (1909-11-01), Borland
patent: 1145870 (1915-07-01), Marvel
patent: 1151080 (1915-08-01), Borland
patent: 1287089 (1918-12-01), Patterson
patent: 2062010 (1936-04-01), Neer
patent: 2301755 (1942-11-01), Seiffert
patent: 3668909 (1972-06-01), Roberts

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