Pressure control for hydraulically actuated agricultural headers
US9717180B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2014 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Aug 4, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B21/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pressure control system is described for a vehicle having a hydraulically actuated header. The system may include a hydraulic lifting circuit for raising and lowering the header, a hydraulic float circuit for floating the header, and a drain tank. A lifting circuit control valve may be configured to control drainage of hydraulic fluid from the hydraulic lifting circuit to the drain tank. A float circuit control valve may be configured to control drainage of hydraulic fluid from the hydraulic float circuit to the drain tank. A user interface may be configured to receive one or more inputs to control drainage of hydraulic fluid from the hydraulic circuits. Based upon the one or more inputs, at least one of the control valves may be opened, in order to depressurize, respectively, one of the hydraulic circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.