Hydraulic auxiliary power steering with energy supply arrangement
US4203292A · kind A · utility
3Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 6, 1978 |
| Grant date | May 20, 1980 |
| Priority date | — |
| Expiry date | Sep 6, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/09
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A pressurized fluid supply for an auxiliary power steering system includes a regulator valve assembly controlling the output pressure of a fluid supply pump under the opposing influences of the pump discharge pressure and a signal feedback pressure from a fluid operated servomotor. An adjustable bias applied to the regulator valve assembly establishes a low idling discharge pressure for the pump while no steering action is being performed by the servomotor to which the pump is connected by a control valve biased to a flow blocking position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.