Lock for lever-handled door latch

Details Lock for lever-handled door latch Lock for lever-handled door latch

2006-05-23

2006-05-23

Estremsky, Gary (Department: 3676)

Closure fasteners

Portable securer plate or bar

Swinging holding member

C292S298000, C292S336300

Reexamination Certificate

active

07048315

ABSTRACT:
A door lock is provided for use with a door handle having a lever movable about a shaft extending perpendicularly to the lever and connected to a latch mechanism which controls the opening and closing of a door. The lock includes a housing configured to be coupled to the door handle and a blocking member movable relative to the housing between a lever-blocking position blocking movement of the lever to prevent opening of the door and a lever-releasing position permitting movement of the lever to permit opening of the door. From the lever-blocking position, the blocking member is moved to the lever-releasing position by first pushing the blocking member inwardly against a spring to free the blocking member, and then moving the blocking member relative to the housing.

REFERENCES:
patent: 2178378 (1939-10-01), Schlage
patent: 2348265 (1944-05-01), Rippingille
patent: 2883868 (1959-04-01), Fresard et al.
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patent: 5193373 (1993-03-01), Hunt
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patent: 5313812 (1994-05-01), Eklund et al.
patent: 5327632 (1994-07-01), Moore
patent: 5579804 (1996-12-01), Roberts
patent: 5651279 (1997-07-01), Berton et al.
patent: 6105406 (2000-08-01), Thompson et al.
patent: 292348 (1914-05-01), None

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