Patent · US Expired

Hydropneumatic spring suspension device

US4712780A · kind A · utility

7Cited by

5References

14Claims

0Family size

Assignee

Ficht GmbH · DE

Inventors

Reinhold Ficht · Kirchseeon, DE
Walter Vilsmeier · Großhelfendorf, DE

Key dates

Filing date	Mar 14, 1986
Grant date	Dec 15, 1987
Priority date	—
Expiry date	Mar 14, 2006

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB62D55/1125
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

The invention relates to a hydropneumatic spring suspension or shock absorber device, in particular for heavy motor vehicles, which a spring element comprising a housing for a spring bellows filled with a hydraulic medium which is in flow connection with a chamber filled with hydraulic fluid and in which a pneumatic spring is disposed which is deformable under hydraulic pressure, one end of the bellows being supported in the housing and medium being admitted at the other end via an abutment connected with one of the parts. In accordance with the invention, a compact low wear-and-tear spring suspension device is obtained in that the bellows is bent into a substantially circular arc shape and the abutment is movable along the circular arc.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.