Patent · US Expired

Spring unit for weight adjustment of a chair

US6659555B1 · kind B1 · utility

5Cited by

8References

13Claims

0Family size

Assignee

Koenig + Neurath AG · DE

Inventors

Rolf Scholz · Maintal, DE
Frank Weisser · Pegnitz, DE
Armin Sander · Ergolding, DE
Martin Potrykus · Bamberg, DE

Key dates

Filing date	Aug 3, 2000
Grant date	Dec 9, 2003
Priority date	—
Expiry date	Aug 3, 2020

Classification

Technology area (CPC A)Human Necessities
CPC primaryA47C31/126
WIPO fieldFurniture, games
WIPO sectorOther fields

Abstract

A spring unit (11) for the weight setting of a chair (1), in particular an office chair, having a gas spring (12) and having a number of further spring elements (17, 18, 19; 27, 28) which can be connected up to the gas spring (12) individually or in combination. The spring unit (11) is expediently arranged between a seat carrier (7) connected to a rotary column (8) of the chair (1), and the seat (3), or a backrest link (4) which extends at least approximately parallel to said seat (3) and belongs to a backrest (2).

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