Thermally stable pointed diamond with increased impact resistance
US8215420B2 · kind B2 · utility
48Cited by
335References
11Claims
0Family size
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Key dates
| Filing date | Feb 6, 2009 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | May 24, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/1837
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An insert comprises a sintered polycrystalline diamond body bonded to a cemented metal carbide substrate. The diamond body comprises a substantially conical shape with conical side wall terminating at an apex. The diamond body comprises a first region with a metallic catalyst dispersed through interstices between the diamond grains and a second region proximate the apex with the characteristic of higher thermal stability than the first region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.