Elements faced with superhard material
US5617928A · kind A · utility
47Cited by
13References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1995 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Jun 16, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/78
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A preform cutting element, for use on a rotary drill bit, includes a facing table of polycrystalline diamond bonded to a tungsten carbide substrate, a cutting edge being formed by part of the peripheral surface of the facing table. The rear surface of the facing table is integrally formed with a plurality of spaced elongate ribs which project into the substrate, at least the majority of the ribs being located in the vicinity of the cutting edge. The ribs may intersect the cutting edge and extend only part way across the facing table from the cutting edge. The ribs may vary in width and/or depth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.