Cutters for fixed cutter bits
US8833492B2 · kind B2 · utility
30Cited by
59References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2008 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Dec 17, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/62
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A PDC cutter includes a body formed from a substrate material, an ultrahard layer disposed on the body, and a concave cutting face perpendicular to an axis of the body. A PDC cutter includes a body formed from a substrate material, an ultrahard layer disposed on the body, and a non-planar cutting face perpendicular to an axis of the body, the cutting face including a circumferential concave portion, and an inner protrusion portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.