Cleaning system for a combine
US4906219A · kind A · utility
15Cited by
20References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1989 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | Mar 20, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01F12/444
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A cleaning system for a combine having a plurality of cleaning sieves which are operated to arrange grain in a thin veil or crop mat on the sieves. The cleaning system of the present invention includes an elongated transverse cleaning fan and an air plenum. The cleaning fan is rotatably driven about a fixed axis and includes a plurality of spaced apart blades peripherally disposed about the fan. The air plenum extends parallel to and along substantially the entire length of the fan for directing a forced flow of air from the fan rearwardly through the cleaning sieves. The air plenum includes upper and lower air directing baffles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.