Cutting element for drill bits
US5544713A · kind A · utility
327Cited by
11References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1994 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | Oct 17, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/81
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A cutting element which has a metal carbide stud having a conic tip formed with a reduced diameter hemispherical outer tip end portion of said metal carbide stud. A layer of polycrystalline material, resistant to corrosive and abrasive materials, is disposed over the outer end portion of the metal carbide stud to form a cap. An alternate conic form has a flat tip face. A chisel insert has a transecting edge and opposing flat faces. It is also covered with a PDC layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.