Tip for degradation tool and tool comprising same
US9249662B2 · kind B2 · utility
1Cited by
43References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 2012 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Jun 6, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/1837
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tip for a degradation tool, the tip comprising a PCD structure (20) joined to a cemented carbide substrate (30); the PCD structure comprising a plurality of strata (24, 25) arranged so that adjacent strata have alternating compressive and tensile stress states, adjacent strata comprising different PCD grades and being directly bonded to each other by inter-growth of diamond grains; each stratum having a mean thickness of at most 500 microns; the PCD structure defining a working end including a rounded conical apex (22) having a radius of curvature of 1.3 mm to 4 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.