Doorknob with a lock

Details Doorknob with a lock Doorknob with a lock

2006-02-07

2006-02-07

Gall, Lloyd A. (Department: 3676)

Locks

Special application

For closures

C070S149000, C070S222000, C070S224000, C292SDIG027

Reexamination Certificate

active

06993945

ABSTRACT:
The doorknob with a lock has a bolt assembly, a lock activating assembly, an outer doorknob assembly and an inner doorknob assembly. The bolt assembly is mounted in a door and has a bolt head and a rotatable plug. The lock activating assembly has a base, a head, an outer clutch plate and an inner clutch plate. The base and the head respectively have an annular longitudinal protrusion, and the base is covered by the annular longitudinal protrusion. Each annular longitudinal protrusion has two opposite gaps. The outer and inner clutch plates respectively have a long protruding end, a short end, a longitudinal slot and a transverse slot. The ends of the clutch plates are slidably mounted in the gaps in the annular longitudinal protrusion, and the long protruding ends selectively engage the gaps in the annular longitudinal protrusion to lock and unlock the door.

REFERENCES:
patent: 3035432 (1962-05-01), De Vines
patent: 3196644 (1965-07-01), Russell et al.
patent: 3212306 (1965-10-01), Russell et al.
patent: 3269158 (1966-08-01), Andre
patent: 3556576 (1971-01-01), Nelson et al.
patent: 5301526 (1994-04-01), Fann et al.
patent: 5927777 (1999-07-01), Kuo et al.
patent: 6360569 (2002-03-01), Huang
patent: 6470721 (2002-10-01), Ming
patent: 6543265 (2003-04-01), Fan
patent: 6807833 (2004-10-01), Huang et al.
patent: 2004/0237608 (2004-12-01), Chen

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