Hydraulic distributor of the proportional type, with load sensing of the highest pressures in the operating circuits
US4736770A · kind A · utility
14Cited by
12References
4Claims
0Family size
Inventors
Key dates
| Filing date | Nov 28, 1986 |
| Grant date | Apr 12, 1988 |
| Priority date | — |
| Expiry date | Nov 28, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87185
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A progressive hydraulic distributor with a slide for controlling a hydraulic actuator. The distributor has an internal load sensing passage that detects the operating pressure in the hydraulic fluid inlet or outlet passage and superimposes this pressure on the action of the spring of a feed valve. Thus, the difference between the up-flow and the down-flow of progressivity in the slide of the distributor is constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.