Method of controlling rock drilling
US6293355A · kind A · utility
8Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2000 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Jan 19, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D9/006
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of controlling rock drilling wherein the cut length changes from a predetermined cut length, the drilling length is changed by transferring the position of the pattern in the longitudinal direction of the tunnel so that the positions of the end points of the holes remain essentially the same with respect to one another, and a collaring surface is crosswise of the tunnel and different from the actual rock surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.