Rock bit compact and method of manufacture
US5173090A · kind A · utility
22Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1991 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | Mar 1, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/5676
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method is shown for manufacturing a diamond filled compact of the type used as a cutting insert which is received in a cutting insert pocket in a drill bit. A hard metal jacket is provided having an open end and an open interior. The open interior is substantially filled with diamond. The diamond filled jacket is subjected to a temperature and a pressure sufficient to sinter the diamond and integrally form a diamond core within the hard metal jacket. The outer dimensions of the hard metal jacket are then reduced to a size selected to conform to a cutting insert pocket provided on the face of a drill bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.