Method and device for drilling a hole and for securing an anchorage in a bore hole
US7080697B2 · kind B2 · utility
4Cited by
5References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 27, 2003 |
| Grant date | Jul 25, 2006 |
| Priority date | — |
| Expiry date | Apr 23, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D20/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and a device for the drilling, in particular the percussive or percussive rotary drilling of a hole in earth or rock and for securing an anchorage in the hole. A bore hole is created by a drill bit mounted on a drill pipe and a sliding sleeve that surrounds the drill pipe at a distance is simultaneously introduced. A sliding sleeve configured with a longitudinal slit is introduced at least partially and rests substantially against the bore hole during the drilling, whereby a reliable anchorage can be achieved with a simple construction by the sliding sleeve with a longitudinal slit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.