Patent · US Expired

Vibration damper and pneumatic suspension system

US5649692A · kind A · utility

47Cited by

7References

20Claims

0Family size

Assignee

Fichtel & Sachs · DE

Inventors

Heinz-Joachim Gilsdorf · Gerolzhofen, DE
Joachim Kuhnel · Dittelbrunn, DE
Michael Hurrlein · Hammelburg, DE

Key dates

Filing date	Mar 20, 1995
Grant date	Jul 22, 1997
Priority date	—
Expiry date	Mar 20, 2015

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16F9/43
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A self-actuating vibration damper for use in a pneumatic suspension system of a motor vehicle having an air spring that defines an air chamber is disclosed. Located within the air chamber is an actuator rod mounted between two air valves. Upon application of a sufficiently heavy load to the vibration damper, a first end of the actuator rod closes the first air valve to prevent release of air from the air chamber to the outside atmosphere, and a second end of the actuator rod opens the second valve to admit compressed air into the air chamber.

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