Jacket tube for a drilling and anchoring device
US6397957B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 4, 2001 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Apr 4, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D21/0053
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A jacket tube for a device for drilling holes and forming an anchorage in the earth or rock. The jacket tube is coupled with a drill pipe and/or a drill bit or a drill hammer and is configured with a plurality of through openings across its periphery. Once the borehole has been made, or after an anchor has been introduced, the jacket tube can be filled with a hardenable suspension. The jacket tube consists of at least one expanded metal element which has evenly distributed through openings and connecting elements, especially sleeves, at the ends for connecting to a drill bit and/or other jacket tube elements. The borehole is therefore easy to produce and the jacket tube can be anchored securely.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.