Valve mechanism for a combine hydraulic system
US6619020B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2002 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Jun 21, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D41/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A hydraulic system for a combine and harvesting assembly having a valve mechanism that automatically routes fluid from a combine hydraulic line to a harvesting assembly hydraulic line when the harvesting assembly line is coupled with the combine hydraulic line, and automatically routes fluid from the combine hydraulic line to a hydraulic cylinder that controls the speed of a variable speed sheave of a conveyor drive system when the harvesting assembly hydraulic line is detached from the combine hydraulic line. The valve mechanism also includes a relief valve that allows pressurized fluid from the hydraulic cylinder to flow back to the combine's hydraulic system when the valve is routing fluid from the combine hydraulic line to the harvesting assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.