Method and device for drilling
US6016878A · kind A · utility
10Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1998 |
| Grant date | Jan 25, 2000 |
| Priority date | — |
| Expiry date | Feb 26, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B44/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and devices are provided for drilling with impregnated diamond drill bits in which the drill bit (30) automatically continues cutting. The speed of a drilling device (3) along a feed device (2) is determined, and the measured value is used for continuously controlling the feed cylinder (10) and a flushing medium pump (29) such that a substantially constant feed rate is achieved while simultaneously maintaining the rotational speed of the drill bit (30) within predetermined limits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.