Independent dual deadbolt locking mechanism

Details Independent dual deadbolt locking mechanism Independent dual deadbolt locking mechanism

1995-02-10

1996-11-05

Lindsey, Rodney M.

Closure fasteners

Bolts

Multiple

292 37, 292 42, 70418, E05C 106

Patent

active

055709133

ABSTRACT:
An independent dual deadbolt locking mechanism for securing doors, windows or the like. The dual locking mechanism has a single pivot key that acts to place two deadbolt locks in either a locked or unlocked position simultaneously. The deadbolts may be oriented at various angles to one another. Typically, the deadbolts are oriented at a 90 degree angle from one another, with one deadbolt locking into the side frame of a door, and the other locking into the upper door frame or floor. The mechanical arrangements of the locking mechanism allows one deadbolt to be broken or forced into an unlocked position without affecting or unlocking the other independent deadbolt.

REFERENCES:
patent: 724521 (1903-04-01), Teeter
patent: 993235 (1911-05-01), Friedman
patent: 1460166 (1923-06-01), McArthur
patent: 1635714 (1927-07-01), Hoffman
patent: 1909697 (1933-05-01), MacBeth et al.
patent: 2473065 (1949-06-01), Miller
patent: 3633389 (1972-01-01), Horgan, Jr.
patent: 3699788 (1972-10-01), Gerlach
patent: 4037440 (1977-07-01), Shabtai et al.
patent: 4142747 (1979-03-01), Beck et al.
patent: 5077992 (1992-01-01), Su

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