Pilot-controlled valve for braking or speed limitation in a hydraulic circuit
US4854221A · kind A · utility
4Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 27, 1983 |
| Grant date | Aug 8, 1989 |
| Priority date | — |
| Expiry date | Jul 27, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B13/01
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve for retaining a jack which retains a drive load. The braking valve includes a pressure reducing valve and safety valve, one of which ensures that the pressure in the chamber is retained, while the other modulates the pilot-control pressure P.sub.p. Thus, at each moment, the pilot-control pressure P.sub.p is adjusted to the value of the retaining pressure P.sub.l.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.