Method and device for drilling, particularly percussion or rotary percussion drilling, a hole in soil or rock material
US7874380B2 · kind B2 · utility
0Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2006 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | Oct 17, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D21/0073
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and device for drilling, particularly percussion drilling or rotary percussion drilling a hole in soil or rock material and fixing an anchoring in the hole. To this end, a drilled hole is made by a drill bit mounted on a drill rod. The drill rod, on the rear side facing away from the drilling surface of the drill bit, is surrounded at a distance from the drill bit by an anchoring element whose outside dimension exceeds, at least in part, the circumference of the drilled hole made by the drill bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.