Grain drill unit having seed firming wheel
US5398625A · kind A · utility
23Cited by
22References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1992 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Mar 13, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C5/068
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A seed firming wheel assembly is supported in close-coupled relationship with the rear portion of the paired discs of an opener to gently press deposited seeds down into the bottom of a V-shaped trench formed by the discs. The mounting arm of the assembly is configured in a manner to minimize the accumulation of mud and trash residue, while the wheel itself may take the form of a solid, circular block of ultra-high-molecular-weight polyethylene with slick sides to reduce soil adherence or a spoked, molded plastic wheel having open spaces between the spokes to permit soil pass-through.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.