Zone tiller attachment for planters
US5588382A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 1993 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | May 27, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P60/20
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The zone tiller attachment employs a pair of spoked tillage wheels that converge downwardly and forwardly toward one another in leading relationship to the planter and in such an orientation that their heavy, thick, blunt spokes mutually intersect and overlap one another along the lower front extremity and bottom portion of the tiller. The crossed spokes penetrate into the soil to pulverize, cultivate, and substantially disturb the soil particles in place with a churning action while also displacing surface residue to opposite sides of the path of travel, thus producing a relatively narrow band of thoroughly tilled soil having a depth extending down to or below the seed planting level such that the trailing opener can perform its trench opening and seed placement functions in the optimum manner. The individual spokes of each wheel are preferably constructed from short sections of sturdy metal cable formed by individual strands of thick wire twisted into a common, unitary body so that strength with a certain minimal amount of flexibility is achieved to prevent breakage and facilitate the self-discharge of foreign objects. The spokes are disposed at non-radial, raked backed angles so…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.