Diamond drilling bit for soft and medium hard formations
US4098363A · kind A · utility
48Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1977 |
| Grant date | Jul 4, 1978 |
| Priority date | — |
| Expiry date | Apr 25, 1997 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/5673
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to bore hole drills employing spaced shaped cutters in arrays separated by fluid channels in which there are positioned arrays of nozzles suitable for bit cleaning and detritus removal action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.