Cutterbar floatation system
US4206583A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1978 |
| Grant date | Jun 10, 1980 |
| Priority date | — |
| Expiry date | Sep 1, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D41/14
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A crop harvesting header for a self-propelled combine. The header includes a "floating" cutterbar which is flexible and movable up and down so as to cut a standing crop (soybeans, for example) close to the ground to minimize crop losses. The flexibility and movement enable the crop to be cut closely to the ground even though the ground is uneven or undulating across and along the harvesting path. The cutterbar is mounted on a plurality of ground-engaging structures including runners upon which a counterbalancing system imposes pre-selected forces to control the ground pressure of the cutterbar as ground and crop conditions vary. The counterbalancing system provides a substantially constant ground pressure throughout cutterbar movement. The effect of the system is to moderate or eliminate the variations which come from spring force changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.