Earth boring drill bit with matrix displacing material
US5090491A · kind A · utility
135Cited by
13References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1991 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Mar 4, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F7/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A rotary drill bit for drilling earth formations is provided and includes a bit shank, a hard metal matrix secured to a blank and cutting elements on the exterior face thereof. The matrix includes a displacement material having a different composition than the matrix material within the matrix. The displacement material is preferably less expensive than the matrix material and also has different material properties. The resulting bit may be custom-engineered for toughness, ductility, and impact resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.