Door lock

Details Door lock Door lock

2008-04-29

2008-04-29

Estremsky, Gary (Department: 3673)

Closure fasteners

Operators with knobs or handles

C070S107000, C292S033000

Reexamination Certificate

active

07364212

ABSTRACT:
A door lock includes a panel, a base plate, and a middle plate. A handle and a thumb-turn are rotatably mounted on the panel, wherein the thumb-turn has a first spindle mounted on the middle plate and engaged with the thumb-turn, an upper cam mounted on a rear end of the first spindle. The handle has a second spindle mounted on the middle plate and engaged with the handle, and a lower cam with two shoulders mounted on a rear end of the second spindle. A linking sheet is provided between the middle plate and the base plate and has two legs each having a foot pushed by the respective shoulder and an upper end pushing the upper cam. Two slots are defined in the legs, and two springs are received in the longitudinal slots and are pressed between first stops and second stops.

REFERENCES:
patent: 2094982 (1937-10-01), Gerard
patent: 4418552 (1983-12-01), Nolin
patent: 5881585 (1999-03-01), Kang
patent: 6981726 (2006-01-01), Huang

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