Variable rate air spring suspension system
US5169129A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1991 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Sep 26, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2202/154
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An air spring suspension system which provides a variable rate for an air spring of a vehicle, has an auxiliary air reservoir formed by a second air spring in fluid communication with the vehicle air spring. One end member of the auxiliary air spring is mounted on a frame and the other end member, preferably a piston, is moved with respect to the other end member to vary the volume of the air chamber formed by a flexible sleeve extending between the end member and piston. An actuator motor moves the piston with respect to the fixed end member, via a linearly movable shaft to change the volume of the air chamber and consequently the rate of the vehicle air spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.