Self-pumping hydropneumatic shock absorbing leg with internal level regulation

US4993693A · kind A · utility

Assignee

• Boge GmbH · DE

Inventors

• Karl-Heinz Lohr · Eitorf, DE
• Ewald Kohberg · Eitorf, DE
• Norbert Sommer · Rübhausen, DE
• Hubert Beck · Eitorf, DE

Key dates

• Filing date: May 9, 1989
• Grant date: Feb 19, 1991
• Expiry date: May 9, 2009

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60G17/044
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

Self-pumping hydropneumatic shock absorbing leg with internal level regulation, in which the dampening force can be controlled and continuously adjusted during operation of a vehicle. For this purpose, the work piston of the shock absorber is provided with a check valve, whereby a passage runs from one work chamber to an adjustable dampening valve, and from this damping valve, a flow connection runs directly or indirectly via at least one additional check valve into the other work chamber and into a circulation passage which forms a connection to the high pressure chamber.