Closed center emergency steering with accumulator source
US4217968A · kind A · utility
13Cited by
10References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1978 |
| Grant date | Aug 19, 1980 |
| Priority date | — |
| Expiry date | Oct 4, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2544
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An improved emergency system (10) for a vehicle having a closed center steering valve (12), a pump (14) normally supplying fluid to the valve, and an accumulator (16) for supplying emergency pressurized fluid to the valve when the pump fails. The improvement is a flow directing circuit (18) connecting the accumulator to the valve in parallel relationship to the pump and apparatus for blocking flow from the accumulator to the valve responsive to proper operation of the pump. Adequate emergency steering is provided to a closed center steering valve system by the above arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.