Adjustable length gas spring

US6234461A · kind A · utility

Assignee

• SUSPA GMBH · DE

Inventors

• Walter Bohm · Leverkusen, DE
• Frank Weisser · Pegnitz, DE

Key dates

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

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F9/0245
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An adjustable length gas spring comprises a housing, in which a piston mounted on a piston rod is guided for displacement. The piston divides the housing into two partial volumes. Furthermore, a valve is provided for the interconnection of the partial volumes. A device is provided for closing the valve, by means of which the valve is closed when the partial volume which the piston rod does not pass through reaches a given minimum length.