Diamond cutters having modified cutting edge geometry and drill bit mounting arrangement therefor
US5437343A · kind A · utility
134Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1992 |
| Grant date | Aug 1, 1995 |
| Priority date | — |
| Expiry date | Jun 5, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/567
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A diamond cutting element including a substantially planar diamond table having a periphery defined by a multiple chamfer. The angle of the outermost chamfer may be oriented to provide a bearing surface on the cutting element at the place of engagement with the formation being drilled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.