Subsoil fertilizer applicator having arcuately adjustable knife
US5027724A · kind A · utility
28Cited by
18References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1990 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Apr 3, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C5/064
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A fertilizer applicator employs a rotating, trash-cutting coulter and a knife located immediately behind the coulter with the leading arcuate edge of the knife and the rearward arcuate periphery of the coulter in intimately spaced relation to one another. As the coulter wears, the knife may be adjusted upwardly and forwardly along a slightly arcuate path of travel while simultaneously rocked slightly forwardly so as to maximize the length of the front knife edge that is close to the coulter while maintaining a substantially constant depth relationship between the knife and the coulter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.