Folding agricultural implement frame
US6502645B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2000 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Nov 7, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B73/065
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A towed agricultural implement frame comprises a main frame, and right and left wing frame sections that are coupled to one another by right and left pivot frames. The pivot frames are pivotally coupled to the main frame by right and left vertical pivots and to the wing frame sections by right and left horizontal pivots. The wing frame sections can be folded forwardly by right and left folding hydraulic cylinders. As the wing sections are folded forwardly towards the main frame draw bar, right and left rollers on the outermost ends of the wing frame sections engage right and left ramps mounted on the draw bar. Further retraction of the folding hydraulic cylinders lifts the outermost ends of the wing sections by moving the rollers up the ramps. Lift hydraulic cylinders located between the main frame and a wheel frame raise the main frame. The main frame also lifts the innermost ends of the right and left wing frame sections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.