Grain drill planting depth control
US4893572A · kind A · utility
2Cited by
10References
1Claims
0Family size
Inventor
Key dates
| Filing date | Sep 12, 1988 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Sep 12, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C5/064
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In an agriculture grain drill which includes a pair of furrow forming disks rotatably mounted on a support connected with the grain drill in trailing fashion and on which downward pressure is exerted by the grain drill, a furrow closing disk depth control wheel trails the furrow disks and is vertically adjustable relative to the furrow disks by a pressure wheel support arm tongue secured to a furrow disk support bracket.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.