Power steering pump powered load leveler
US4293139A · kind A · utility
13Cited by
8References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1979 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Dec 17, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G17/0195
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle load-leveling system includes a fluid actuated strut connected between the vehicle frame and axle. A piston moves to transfer actuating fluid to the strut in response power steering fluid pressure. A solenoid-controlled spool valve regulates communication of power steering fluid with the piston. Another solenoid-controlled valve assembly controls communication of actuating fluid with the strut. A height sensor cooperates with the solenoids so that selected amounts of actuating fluid are communicated to the strut to maintain the separation of the frame and the axle substantially between a predetermined range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.