Drill bit having diamond impregnated inserts primary cutting structure
US6725953B2 · kind B2 · utility
26Cited by
19References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Apr 22, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2005/001
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An earth-boring bit comprises a bit body bit body in which are mounted a plurality of cutting structures inserts, wherein at least a portion of the cutting structures comprise diamond-impregnated inserts having a total thermal exposure of less than 25 minutes above 1500° F. The diamonds can be natural or synthetic diamond. The bit body itself may be diamond-impregnated, in which case it is preferred that the diamonds in the inserts make up at least 40% of the total diamond in the bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.