Patent · US Expired

Air suspension having a closed compressed-air system

US6698778B2 · kind B2 · utility

8Cited by

9References

19Claims

0Family size

Assignee

Daimlerchrysler AG · US

Inventors

Matthias Roemer · Altdorf, DE
Hans Scheerer · Eßlingen, DE
Frank Schweickhardt · Stuttgart, DE

Key dates

Filing date	Nov 5, 2001
Grant date	Mar 2, 2004
Priority date	—
Expiry date	Dec 24, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60G2500/205
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

An air suspension for a vehicle includes at least one air spring per wheel at at least one vehicle axle, one pump, at least one accumulator, and one circuit arrangement for connecting these units, the pressure side of the pump being connected to the accumulator or the air springs. To form a closed compressed-air system, the intake side of the pump is connected via at least one valve to the accumulator or the air springs, and at least the air-guiding interior pump chambers between the intake side and the pressure side of the pump have a pressure-tight design. The air suspension system requires comparably low energy consumption and small unit volume at a high level of efficiency.

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