Drilling apparatus and method for introducing a drilling element into the soil
US7228920B2 · kind B2 · utility
7Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 20, 2004 |
| Grant date | Jun 12, 2007 |
| Priority date | — |
| Expiry date | Jun 21, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B3/03
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a drilling apparatus and a method for introducing a drilling element into the soil. The drilling element is rotatably and slidably supported on a mast, with a torque being applied through a rotary drive located on the mast. In order to support the torque an additional turning device is fixed to the mast, which can be engaged with the driven drilling element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.