Process and device for simultaneously drilling and lining a hole
US6106200A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 12, 1999 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | May 12, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D21/0033
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a process for drilling, in particular rotary percussion or percussion drilling, and lining holes in the ground or rocks, a hole is percussion and/or rotation drilled by a cutter mounted on boring rods and a lining is formed by a jacket tube. During drilling, at least one jacket tube coupled to the cutter is drawn in the axial direction by the cutter into the bore hole and once drilling is finished, the cutter is at least partially removed from the jacket tube together with the boring rods. In a device for drilling, in particular percussion or rotary percussion drilling, and lining holes in the ground or rocks, a cutter mounted on boring rods drills a bore hole by percussion and/or rotary drilling. The cutter is divided in the radial direction. At least one jacket tube which surrounds the boring rods is located at the end of the cutter away from the drilling surface, around the outer circumference of the cutter, and is form-fittingly joined to the cutter by at least one coupling element so as to be drawn in the longitudinal direction of the bore hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.