Method and device for drilling a hole in soil or rock material and for forming an anchoring
US7287608B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2006 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Sep 20, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D5/76
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and device for boring a hole in soil or rock material and for forming an anchoring are disclosed. A borehole is formed by inserting a drill bit, and tensioning elements coupled to the drill bit are introduced into the borehole. After completion, the boring rods are detached from the drill bit and removed. The boring rods are provided with a hollow space in its longitudinal direction to introduce a hardenable fluid into the borehole. Anchoring or fixing elements for anchoring on the borehole's inner wall are provided on the drill bit at the end opposite the drilling surface and/or on the tensioning elements. The tensioning elements are subjected to a turning or twisting whereby shortening their effective length for tensioning or centering so that a centering and an optionally temporary tensioning of the tensioning elements can be effected before the hardenable material completely hardens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.