Resilient column of adjustable length

US4245826A · kind A · utility

Assignee

• Stabilus GmbH · DE

Inventor

• Winfried Wirges · Koblenz, DE

Key dates

• Filing date: Jul 23, 1979
• Grant date: Jan 20, 1981
• Expiry date: Jul 23, 1999

Classification

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

Abstract

A column which includes an elongated guide tube receiving a pneumatic spring of the piston-and-cylinder type in its bore. A bar is fixedly fastened to the piston rod member or the cylinder member of the spring in longitudinal alignment and extends in the guide tube bore from the associated spring member toward one of the two longitudinally terminal parts of the guide tube. A spring assembly extending about the bar is interposed between spring seats on the pneumatic spring member fixedly fastened to the bar and the one terminal part of the guide tube. Cooperating abutments on the bar and on the one terminal part of the guide tube limit movement of the bar toward the other longitudinally terminal part of the guide tube.