Pressure relief valve for the working pressure of a servo-steering system
US4273030A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1978 |
| Grant date | Jun 16, 1981 |
| Priority date | — |
| Expiry date | Mar 6, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/24
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A pressure relief valve for the working pressure of a servo-steering mechanism of a vehicle, with a pressure medium connection between a high pressure connection adapted to be placed under a working pressure and a zero connection adapted to be placed under a lower pressure, whose valve-adjusting member is retained in a normal rest position closing off the pressure medium connection during normal conditions by a control device operating as a function of an operating magnitude of the servo-steering mechanism and which upon exceeding a critical value of the operating magnitude is adapted to be displaced into a by-pass position more or less opening up the pressure medium connection; the control device thereby operates in dependence on the load of the servo-steering mechanism while the by-pass position is independent of the angle of rotation of the steering shaft of the servo-steering mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.