Method and apparatus for creating an advantageous growing zone in a soilbed having a topsoil stratum and a hardpan stratum
US5437336A · kind A · utility
Inventor
Key dates
| Filing date | Apr 19, 1993 |
| Grant date | Aug 1, 1995 |
| Priority date | — |
| Expiry date | Apr 19, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B49/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A soilbed having a topsoil stratum and a subsurface hardpan stratum is fractured by a subsoiling tine to form a trench-like path which extends in depth at least partially into the hardpan stratum. One or more pairs of rotatable blades are operated thereafter which lift up, invert, and mound nutrient-rich topsoil from the topsoil stratum on either side of the trench-like path into the trench-like path. The mounded topsoil provides an unusually hospitable environment for plant growth, especially for the root systems of plants. Additional features, such as blade attachments, coulter disks, and a bulldozer blade may be provided to enable efficient operation with consistently beneficial results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.