Frame folding arrangement with vertically pivoting planting units
US6688242B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2001 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Dec 18, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C7/208
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A seeding machine comprises a main frame segment and left and right wing frame segments. In its working configuration the wing frame segments extend transversely. In its transport configuration the wing frame segments are folded forwardly. The wing frame segments are provided with a rear rank of planting units that are mounted to the wing frame segments by pivot arms that extend downwardly and rearwardly. The pivot arms are pivotally mounted to the wing frame segments by a rock shaft. The rock shaft is provided with an actuator bell crank that is coupled to a linear actuator for rotating the rock shaft relative to the wing frame segments. The pivot arms have a working position, wherein the planting units are in their working position, and a transport position, wherein the planting units have been pivoted on their noses into their substantially vertical transport position to reduce the transverse transport width of the seeding machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.