Hydraulic control valve
US10641297B2 · kind B2 · utility
0Cited by
10References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2018 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Aug 17, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/5756
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A new means of achieving a valve float position in a closed centered hydraulic control valve. The valve has a main spool position whereby pressure compensator load sense control pressure is drained to tank through the main spool. Secondly, a pin acts on the pressure compensator to prevent the main pump flow from reaching the main section spool. Finally, the new spool position adds a connection from the consumer to tank, enabling a float position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.