Hydraulic power slide valve, especially designed for public work equipment
US4450865A · kind A · utility
2Cited by
11References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 28, 1980 |
| Grant date | May 29, 1984 |
| Priority date | — |
| Expiry date | Jul 28, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86606
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic valve includes a valve body and slide, along with control pieces consisting of two thrust bearings rigidly mounted with a link which is mounted through an axial hole of the slide valve and through the axial holes of the two respective secondary pistons. The slide valve and the secondary pistons are mounted so as to provide an ample gap between the thrust bearings. The secondary pistons, located on either side of the slide valve, delineate two rear chambers which are fed with low pressure fluid. Thus, a gradual displacement of the slide valve is permitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.