Patent · US Expired

Backrest, particularly for an office chair

US7216933B2 · kind B2 · utility

54Cited by

15References

12Claims

0Family size

Assignee

Armin Sander · DE

Inventors

Christopher Schmidt · Nuremberg, DE
Armin Sander · Ergolding, DE

Key dates

Filing date	Feb 18, 2005
Grant date	May 15, 2007
Priority date	—
Expiry date	Apr 27, 2025

Classification

Technology area (CPC A)Human Necessities
CPC primaryA47C7/465
WIPO fieldFurniture, games
WIPO sectorOther fields

Abstract

In the case of a backrest (1), in particular for an office chair, having a lordosis support (3) comprising supporting ribs (2) arranged in a manner such that they run parallel to one another, said supporting ribs are precurved in a flexurally elastic manner in their starting position. An adjusting element (9), which can be actuated via an adjusting member (6) and is intended for setting the lordosis curvature (18), is guided on the curvature side (12) of the lordosis support (3) in such a manner that the lordosis curvature (18) decreases during a tensile loading of the adjusting element (9).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.