Directional control valve
US10156246B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 2015 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | Jan 16, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/3122
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Exemplary control valves that may be configured as a load sense, closed-center, and/or open-center valve. The control valve may include optional individual valve force sensing to potentially allow an operator to smoothly operate devices operating on low-load work ports even when a variable displacement pump is inducing pressure to operate a device connected to a high-load work port of a separate valve or worksection in the same stack. This optional force sensing may be employed on any or all worksections associated with any valve stack, and may further be included on one or both workports for any given worksection. Each worksection may include parallel and variable paths of fluid supplied by the pump. Also, flow priority to one or more worksections or external valves in a corresponding hydraulic system is optional and can be customized using the variable flow path and a corresponding fixed restriction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.