Hydraulic valve
US9708796B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 2014 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Jul 10, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2013/041
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve for a hydraulic system is provided including a work port channel, a load sense channel, and a tank channel. Additionally, a body cavity extends between the work port channel and the tank channel, and a spool is movably positioned in the body cavity. The body cavity defines an inner surface and the spool defines an outer surface. The inner surface of the body cavity and the outer surface of the spool together define a interface between the body cavity and the spool that extends outwardly from a longitudinal axis, such that an increased pressure differential between the work port channel and a load sense channel increases a sealing force, allowing for a more responsive valve in the hydraulic system with less leakage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.