Elements faced with super hard material
US5605199A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1995 |
| Grant date | Feb 25, 1997 |
| Priority date | — |
| Expiry date | Jun 20, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/5735
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A preform element includes a facing table of super hard material having a from face, an outer peripheral surface, and a rear surface bonded to a substrate which is less hard than the super hard material. The facing table comprising a peripheral region surrounding an inner region, the peripheral region having an inner surface which is inclined at an angle of greater than 90.degree. to the rear surface of the facing table so as to face in a direction having a component rearwardly away from the facing table as well as inwardly towards said inner region. The inner region of the facing table may be formed with projections extending into the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.