Controllable vibration dampers for motor vehicles

US5078241A · kind A · utility

Assignee

• Boge GmbH · DE

Inventors

• Norbert Ackermann · Eitorf, DE
• Hurbert Beck · Eitorf, DE

Key dates

• Filing date: Apr 9, 1990
• Grant date: Jan 7, 1992
• Expiry date: Apr 9, 2010

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60G2600/20
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Controllable vibration dampers for motor vehicles that include a cylinder which contains a damping medium and an axially movable piston rod sealed and submerged in the medium. A damping piston is attached to the piston rod and subdivides the cylinder into a two work chambers. A hollow piston is provided with at least one valve disc which is movable within the piston. The disc moves into and out of engagement with ledge or edge structures provided within the piston when a dampening medium is directed against and past the disc.