Positioning device for chair

Details Positioning device for chair Positioning device for chair

2009-09-02

2010-06-15

Brown, Peter R. (Department: 3636)

Chairs and seats

Movable bottom

Tiltable

C297S320000, C297S322000

Reexamination Certificate

active

07735925

ABSTRACT:
A positioning device includes a clamping seat having first and second clamping members with clamping portions mounted around a fixed rod of a chair having an inclinable seat to which the first clamping member is fixed. An adjusting rod includes a coupling seat having a positioning groove with a low-profile section and a high-profile section. A positioning block is mounted to the second clamping member and includes a protrusion received in the positioning groove. The protrusion is engagable with one of the low-profile section and the high-profile section, so that the clamping portions can be clamp on or disengage from the fixed rod, allowing controlling of movement of the clamping seat along the fixed rod. The first clamping member includes a sidewall having a hole slideably receiving the fixed rod and in slight tight coupling with the fixed rod.

REFERENCES:
patent: 2617471 (1952-11-01), Lorenz
patent: 3934932 (1976-01-01), Ekornes
patent: 3947069 (1976-03-01), Lusch
patent: 4614377 (1986-09-01), Luo
patent: 4660884 (1987-04-01), Terui et al.
patent: 5211444 (1993-05-01), Kjellman
patent: 5624159 (1997-04-01), Celoni et al.

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