Dead bolt assembly

Details Dead bolt assembly Dead bolt assembly

1991-09-10

1992-03-10

Moore, Richard E.

Closure fasteners

Bolts

Sliding

292166, 292DIG62, 2923363, 70109, E05B 5504

Patent

active

050944860

ABSTRACT:
A lock mechanism for a dead bolt assembly. The lock assembly includes a conventional key actuated cylinder for mounting outside the door for extending and retracting the dead botl between a locked and an unlocked position. An exterior thumb turn assembly is accessible from the exterior of the door and includes a rotatable actuator arm which is connected to a pushing link for pushing the dead bolt from its retracted to its extended position. The exterior thumb turn, however, does not permit the retraction of the dead bolt, but only permits its extension.

REFERENCES:
patent: 541454 (1895-06-01), Sweigart et al.
patent: 2203817 (1940-06-01), Ferris
patent: 2275128 (1942-03-01), Campbell
patent: 3064462 (1962-11-01), Ng et al.
patent: 4116027 (1978-09-01), Tannery
patent: 4422677 (1983-12-01), Gates
4500 and 4600 Series Small Cylinder Dead Bolts--Installation Instructions 0001-10-8130.

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