Method of securing a rock bolt
US4165946A · kind A · utility
3Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 12, 1977 |
| Grant date | Aug 28, 1979 |
| Priority date | — |
| Expiry date | Aug 12, 1997 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D21/002
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
When securing a rock bolt in a drilled hole in the rock the bolt having a conical end, is inserted to the desired depth in the hole. A gun, charged with a sleeve, is applied on the outer end of the rock bolt, and the bolt is centered in the gun barrel. The sleeve is shot into the hole at a high speed to be wedged in the gap between the conical end of the bolt and the wall of the hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.