Diamond cutting structure for drilling hard subterranean formations
US5460233A · kind A · utility
316Cited by
26References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1993 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Mar 30, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/26
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rotary drag bit for drilling hard rock formations with substantially planar PDC cutting elements having diamond tables backed by substrates which flare or taper laterally outwardly and rearwardly of the cutting edge of the diamond table. A cutting structure defining a "lipped" cutting edge is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.