Chair, in particular office chair

US7566097B2 · kind B2 · utility

Inventors

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

Key dates

• Filing date: Sep 26, 2007
• Grant date: Jul 28, 2009
• Expiry date: Sep 26, 2027

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A47C1/03277
• WIPO field: Furniture, games
• WIPO sector: Other fields

Abstract

A seat, in particular an office chair, has a synchronous mechanism with a weight-adapting mechanism. An automatic adaptation of a spring force acting on the synchronous mechanism depends on the weight momentarily exerted on the seat. Therefore, the spring force is transmitted to the synchronous mechanism via a lever whereof the active arm length of the lever can be modified to adjust the spring force. The weight-adapting mechanism is configured such that the active arm length is automatically adapted to the weight momentarily exerted on the seat.