Dual rate equalizer suspension
US4798398A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 12, 1987 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Aug 12, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G21/073
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A suspension system for a vehicle in which each suspension system at each wheel has a dual spring rate. An external accumulator is used in connection with the main oil/gas strut but is charged to a higher initial pressure than the pressure of the main strut. Thus, the external accumulator has no effect until the load on the vehicle reaches a predetermined amount. At this time, the external accumulator becomes effective and the total suspension system, including the strut assembly and the accumulator, produces a different spring rate function. In another embodiment load equalization between two rear wheels is obtained by a connecting conduit connecting the oil chambers of the two oil/gas strut systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.