Skimmer
US6913086B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 28, 2002 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Dec 27, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/7618
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus and method for shearing a soil layer and removing it is provided. An apparatus in accord with the present invention has a frame mounting a shearing blade reciprocally movable substantially vertically into an operational position where the shearing blade will extend below the ground surface to shear the layer of soil above the shearing blade from the soil beneath it. An apparatus will also have a pushing blade mounted for use in pushing sheared soil. In a method in accord with the present invention, apparatus is provided that includes a shearing blade and a pushing blade. Each of the blades is positionable in operational and non-operational positions. The pushing blade is placed in its non-operational position and the shearing blade is placed in the operational position and is used to shear an upper layer of soil to a desired depth to produce a sheared soil layer and to create a new surface layer below the sheared soil layer. The shearing blade is then placed in its non-operational position and the pushing blade is placed in its operational position and is used to push the sheared soil layer off the new surface layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.