Pneumatic rock-boring device and method for horizontal drilling using compressed air and drilling medium
US7111695B2 · kind B2 · utility
11Cited by
11References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2001 |
| Grant date | Sep 26, 2006 |
| Priority date | — |
| Expiry date | Mar 28, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a method for horizontal ground drilling, in particular for rock drilling, by means of a ground drilling apparatus which can be driven forward in rotation and percussively, the apparatus having compressed air and drilling medium applied to it alternately or simultaneously, and the compressed air and the drilling medium being supplied via one channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.