Corotating preventor of excavated soils in a ground improvement apparatus
US5006016A · kind A · utility
5Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1989 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Dec 5, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D3/126
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An excavation rod of a ground improvement apparatus is provided with an excavation blade and plural steps of agitation blades above the excavation blade. A corotation prevention blade which does not rotate during the excavation vertically and rotationally, is provided between the excavation blade and the agitation blade and plurality of downwardly projecting fingers are secured to the corotating prevention blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.