Drilling apparatus, method, and system
US8636448B2 · kind B2 · utility
0Cited by
18References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2006 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Oct 19, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D21/0053
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of supporting a substrate includes inserting a rock bolt into a hole and using the rock bolt to form a groove in a wall of the hole when the rock bolt is inserted therein. The rock bolt is caused to interact with the groove in such a way that the rock bolt is secured in the hole at least in part by the interaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.