Claims
- 1. A jacket tube for a device for drilling holes and forming an anchorage in soil or rock material, wherein the jacket tube is coupled with a drill rod assembly and/or a drill bit or a drilling hammer, respectively, and is formed with a plurality of passage openings about its circumference and capable of being filled with a curable suspension after completion of the drill hole or after insertion of a roof bolt, wherein the jacket tube is formed of at least one expanded metal element provided with uniformly distributed passage openings and comprising, on its ends, connecting elements, in particular sleeves, for connection with the drill bit and/or further jacket tube elements.
- 2. A jacket tube according to claim 1, wherein the passage openings of the expanded metal element have substantially rhomboidal or lozenged contours.
- 3. A jacket tube according to claim 1, wherein the expanded metal element has a grid-like or wire netting-like structure.
- 4. A jacket tube according to claim 1, wherein an annular space is defined by spacers arranged between the jacket tube and the drill rod assembly or roof bolt, respectively, in particular sleeve elements provided in the end regions of the expanded metal element(s).
- 5. A jacket tube according to claim 1, wherein the jacket tube is designed in several layers with a synthetic tube being provided between expanded metal elements designed with passage openings and arranged on the inner and outer surfaces, viewed in the radial direction.
- 6. A jacket tube according to claim 5, wherein the synthetic tube is designed with a plurality of outlet openings opening and closeable merely in the direction towards the outer side of the jacket tube.
- 7. A jacket tube according to claim 5, wherein the connecting elements formed by sleeves have stepped contours or contours formed with offset regions, on which the internally and externally arranged expanded metal elements and the intermediate synthetic tube are fixable.
- 8. A jacket tube according to claim 1, wherein the jacket tube under tensile actuation is capable of being coupled with the drill bit or the drilling hammer, respectively, optionally by interposing a coupling element, in particular an impact shoe acting on the drill bit.
Priority Claims (1)
Number |
Date |
Country |
Kind |
A 1659/98 |
Oct 1998 |
AT |
|
Parent Case Info
[0001] The present invention is a continuation application of PCT/AT99/00237, filed Oct. 4, 1999.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/AT99/00237 |
Oct 1999 |
US |
Child |
09824698 |
Apr 2001 |
US |