Adjustable-height chair column

US7467774B2 · kind B2 · utility

Assignee

• Stable II S.a.r.l · LU

Inventors

• Walter Bohm · Leverkusen, DE
• Helmut Kastner · Neukirchen, DE
• Holger Knaust · Neuenburg am Rhein, DE
• Gerhard Wunderling · Pegnitz, DE

Key dates

• Filing date: Jan 21, 2005
• Grant date: Dec 23, 2008
• Expiry date: Dec 12, 2025

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A47C3/30
• WIPO field: Furniture, games
• WIPO sector: Other fields

Abstract

An adjustable-height chair column comprises an upright tube and a gas spring that is disposed coaxially in the upright tube. The gas spring comprises a valve for actuation of the gas spring. This valve is embodied for opening upon relief of the casing of the gas spring in relation to the upright tube.