Ground surface contour modifying apparatus and method
US5094569A · kind A · utility
20Cited by
8References
39Claims
0Family size
Inventor
Key dates
| Filing date | Nov 30, 1990 |
| Grant date | Mar 10, 1992 |
| Priority date | — |
| Expiry date | Nov 30, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S273/31
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A ground surface contour modifying apparatus and method which includes a plurality of independent, selectively actuable hydraulic elements positioned below the surface of a defined area of ground. Selective actuation of the hydraulic elements enables modification of the contours of the overlying ground surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.