Gas spring with means for impeding piston movement away from one terminal position

US4166612A · kind A · utility

Assignee

• Stabilus GmbH · DE

Inventors

• Herbert Freitag · Koblenz, DE
• Klaus Schnitzius · Rheinbrohl, DE

Key dates

• Filing date: Apr 26, 1977
• Grant date: Sep 4, 1979
• Expiry date: Apr 26, 1997

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F9/49
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The piston in a gas spring of the piston-and-cylinder type is prevented from moving from one of its terminal positions under the pressure of the gas in the cylinder by a plunger on the piston projecting toward the closed cylinder end and received in an axial recess of a brake member on the cylinder by cooperating engagement elements on the plunger and brake member which may provide a friction fit or impede fluid flow into the recess.