Ultra hard material cutter with shaped cutting surface
US6550556B2 · kind B2 · utility
109Cited by
31References
42Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2000 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | May 4, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/27
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cutting layer is provided having a radially extending depression formed on the exposed surface of the cutting element's cutting layer. A corresponding depression may be formed on the substrate end surface below the depression formed on the cutting layer. Furthermore, secondary shallower depressions may be formed on the cutting layer. The cutting element is typically mounted in a drag bit such that the cutting layer radially extending depression makes contact with the earth formations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.