Cylinder-and-piston rod device

US4303231A · kind A · utility

Assignee

• Stabilus GmbH · DE

Inventors

• Hermann Reuschenbach · Koblenzer Straße, DE
• Winfried Wirges · Koblenz, DE
• Rolf Langanke · Boppard, DE

Key dates

• Filing date: Oct 29, 1979
• Grant date: Dec 1, 1981
• Expiry date: Oct 29, 1999

Classification

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

Abstract

In the illustrative embodiments disclosed, a pressurized cylinder-and-piston rod device, such as a gas spring, includes structure for releasably retaining the piston rod at a terminal position within the cylinder against the fluid pressure tending to expel it. Provision is also made for the fluid pressure to aid in further withdrawing the piston rod into the cylinder after the retaining structure has been engaged.