Control unit for agricultural harvesters
US6290599A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1999 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Sep 30, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01F12/28
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A control unit for an agricultural harvesting machine is arranged so that the width of a passage or opening between two machine elements can be precisely adjusted as simply as possible. Adjustable stops are in the form of plungers are displaceably guided in cylinders. Each cylinder is connected to a multi-chamber pump which contains a displaceable stepped piston. Individual chambers of the multi-chamber pump and the steps of the piston are mutually matched so that the same quantity of hydraulic fluid is squeezed out from the two chambers of the multi-chamber pump and the plungers move in and out in synchronism. The control unit is particularly suitable for use in foragers, combines other agricultural harvesting machines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.