Chair with movable seat and backrest

Details Chair with movable seat and backrest Chair with movable seat and backrest

2005-08-02

2005-08-02

Nelson, Jr., Milton (Department: 3636)

Chairs and seats

Movable bottom

Interconnected with back for relative concurrent movement

C297S300300

Reexamination Certificate

active

06923503

ABSTRACT:
A chair has a seat and a backrest, a structure supporting the seat, and a base. The support structure has two lateral uprights and at least one projecting element provided with a substantially longitudinal guide. The backrest is associated with two angled elements; each of the angled elements has a first end connected to the backrest, a central part connected rotatably by a first hinging pin to a top end of one of the uprights of the support structure of the seat, and a second end connected by a second hinging pin to the seat. The seat is connected to the support structure by a telescopic rod, which can be shortened and lengthened in a resilient manner, and an element which can be slidably engaged in the guide of the projecting element.

REFERENCES:
patent: 809944 (1906-01-01), Hanger
patent: 2492106 (1949-12-01), Orton
patent: 2530625 (1950-11-01), Nordmark
patent: 3252734 (1966-05-01), Berlin
patent: 4429917 (1984-02-01), Diffrient
patent: 4537445 (1985-08-01), Neuhoff
patent: 4840426 (1989-06-01), Vogtherr et al.
patent: 4848837 (1989-07-01), Volkle
patent: 5810440 (1998-09-01), Unwalla
patent: 5909923 (1999-06-01), DeKraker
patent: 6467842 (2002-10-01), Lu
patent: 6513874 (2003-02-01), Sander et al.
patent: 2002/0171276 (2002-11-01), Bock
patent: 100 64 204 (2002-07-01), None

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