US 6,729,691 B2 · Chair back construction

Abstract

A chair back is disclosed and includes a mesh material connected to a two-piece carrier, the carrier being deformable and stretchable. The carrier has a bottom edge including a groove and is engageable by tabs attached to a transverse member of a chair frame assembly. The upper ends of the carrier each includes an opening for receiving a spherical end portion of the upper end of the chair frame assembly. Engagement of the carrier with the chair frame assembly is accomplished by stretching the carrier and mesh between the transverse member and the spherical end portions. The chair back includes a lumbar support which is mounted to slide along the side edges of the carrier and along vertical supports of the chair frame assembly, the lumbar support causing the chair to tension forwardly. The chair back is pivotal under the influence of a chair user and is pivotally connected to the chair seat so as to cause the chair seat to also pivot in response.

Claims15

Dependent claims

A chair back comprising:

a stretchable material for engaging a back of a chair user;
and
a generally rectangular and stretchable carrier connected to said back engaging material, said carrier having top, bottom and side edges and configured to directly engage a chair frame assembly only along said bottom edge of said carrier and at upper corners where said side edges and top edge of said carrier intersect.

Dependencies are inferred from the claim text.

Facts

Application

10/077,540Filed 15 Feb 2002 · continuation in part

Priority

15 Jun 2001

Published

US 2003/0001425 A12 Jan 2003

Granted

4 May 2004

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

A47C 7/282
With tensioned springs, e.g. of flat type: with mesh-like supports, e.g. elastomeric membranes
A47C 1/03255
The parts being movably-coupled seat and back-rest: with a central column, e.g. rocking office chairs
A47C 5/06
Metal chairs, e.g. tubular: special adaptation of seat upholstery or fabric for attachment to tubular chairs
A47C 7/40
Supports for the head or the back: for the back

Family

Application09/882,140Parent of this continuation-in-part · filed 15 Jun 2001

Application09/881,795Parent of this continuation-in-part · filed 15 Jun 2001

US 2003/0001425 A1Pre-grant publication · published 2 Jan 2003

US 6,572,190 B2Parent of this continuation-in-part

US 2002/0190552 A1Published application

US 2002/0190564 A1Published application

US 7,014,269 B2Related patent

US 6,729,691 B2This patent

From the US filing history. Foreign family members aren’t listed.

Chair back construction

Life of this patent

Chair back construction

Life of this patent

Abstract

Claims15