Tunnel drilling machine or tube-driving machine
US5575537A · kind A · utility
6Cited by
3References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1995 |
| Grant date | Nov 19, 1996 |
| Priority date | — |
| Expiry date | Apr 5, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D9/1093
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The tunnel drilling machine or tube-driving machine for hard rock drilling has a drill head (19) supporting drilling tools (1 to 18) which has a diameter which is less than the diameter of the bore. The geometric axis of the circle of the envelope of the tools of the full-width drill head (19) is disposed eccentrically in relation to the linear tunnel axis (22) or the axis of rotation (21) or can be displaced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.