Vibration damper unit

US5353898A · kind A · utility

Assignee

• Fichtel & Sachs · DE

Inventors

• Gunther Handke · Euerbach, DE
• Rolf Wengenroth · Harrison, US
• Gunther Braun · Wuppertal, DE
• Helmut Baalmann · Bergrheinfeld, DE

Key dates

• Filing date: Jul 2, 1992
• Grant date: Oct 11, 1994
• Expiry date: Jul 2, 2012

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F9/325
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In a vibration damper for a motor vehicle a flow path connecting a working chamber of the cylinder with a damping behavior control unit is confined by a flow path tube surrounding the cylinder. The flow path tube is provided adjacent its axial end portions with bead-shaped grooves accommodating respective sealing rings. These sealing rings are according to an illustrated example of the invention in engagement with an external surface of the cylinder. The bead-shaped grooves are obtained by non-cutting machining.