Drill bit having improved cutter configuration
US5027912A · kind A · utility
180Cited by
5References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 3, 1990 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Apr 3, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/5676
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Drill bits may include cutting members which have cutting faces formed of segments of differing cutting materials. The faces of the cutting members may include two or more segments, with the segments formed from at least two different materials. For example, a first segment could be formed of a polycrystalline diamond compact surface while a second segment could be formed of a thermally stable diamond product material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.