Chair, in particular office chair

US6234573A · kind A · utility

Assignee

• Peter Roder · DE

Inventors

• Peter Roder · Frankfurt am Main, DE
• Johannes Uhlenbrock · Drensteinfurt, DE

Key dates

• Filing date: Jun 29, 1999
• Grant date: May 22, 2001
• Expiry date: Jun 29, 2019

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A47C1/03294
• WIPO field: Furniture, games
• WIPO sector: Other fields

Abstract

A chair is provided in which the position and movement of the backrest, which is pivotally carried on a backrest carrier, is effected by movement of the seat top, which, in turn, is subjected to the weight of the seat user. The amount of the user's weight differently affects the position of the backrest through the use of pivoting linkages and a tension spring.