Reinforced apparatus for a lever handle of a door lock

Closure fasteners – Knob rose plates

Reexamination Certificate

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Details

C292S336300, C292S347000, C292S356000, C292SDIG061, C070S224000, C070S452000

Reexamination Certificate

active

07137657

ABSTRACT:
A reinforced apparatus for a lever handle of a door lock comprises a housing having a first bottom plate and a second bottom plate, in which the first bottom plate connects a first annular wall and a second annular wall, and the second bottom plate connects the second annular wall and a third annular wall; a recess formed between the first annular wall and the second annular wall; and a rotary member, in which a coiled spring is disposed between a first and a second side plates of the rotary member: wherein the second bottom plate of the housing is formed with an axially extending predetermined bending member to be bent inwardly for a predetermined angle, after the rotary member and the coiled spring are disposed within the recess of the housing, so that the rotary member is maintained within the recess of the housing and can be operated externally.

REFERENCES:
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patent: 4998760 (1991-03-01), Nixon et al.
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patent: 5265924 (1993-11-01), Kim
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patent: 5666833 (1997-09-01), Gao et al.
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patent: 5727406 (1998-03-01), Banducci
patent: 6038894 (2000-03-01), Hu
patent: 6085561 (2000-07-01), Yao
patent: 6386602 (2002-05-01), Lan
patent: EP 526409 (1993-02-01), None
patent: 2013271 (1979-08-01), None

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