Key for use with 5-pin and 6-pin door locks

Details Key for use with 5-pin and 6-pin door locks Key for use with 5-pin and 6-pin door locks

1994-03-18

1996-05-07

Boucher, Darnell M.

Locks

Operating mechanism

Key

70406, 70337, 70367, 70370, 70493, E05B 1906

Patent

active

055135099

ABSTRACT:
A key 20 is formed with a blade 22 having six bits 30, 32, 34, 36, 38 and 40 formed along one edge of the blade. A shoulder 42 is formed on a trailing end 28 of blade 22 and is positioned to cooperate with a front face 82 of a plug 50 of a five-pin cylinder lock 46 to locate bits 30, 32, 34, 36 and 38 adjacent five respective sets of tumbler pins in the operation of the lock. Key 20 can also be used with a six-pin cylinder lock 110. Shoulder 42 is moved through a slot 130 in a front face 134 of a plug 114 of lock 110 and engages a stop surface 132 whereby bits 30, 32, 34, 36, 38 and 40 are properly positioned adjacent six respective sets of tumbler pins in the operation of the lock.

REFERENCES:
patent: 1009155 (1911-11-01), Kohlberger
patent: 1679558 (1928-08-01), Best
patent: 1953535 (1934-04-01), Hurd
patent: 2807158 (1957-09-01), Best
patent: 2910860 (1959-11-01), Camba
patent: 3167943 (1965-02-01), Schreiber et al.
patent: 3348392 (1967-10-01), Schreiber
patent: 3349587 (1967-10-01), Keller
patent: 3418833 (1968-12-01), Kerr
patent: 3788110 (1974-01-01), Sugae
patent: 4075879 (1978-02-01), Christopher
patent: 4162623 (1979-07-01), Yorio et al.

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