Rotary drill bit with abrasion and erosion resistant facing
US4884477A · kind A · utility
200Cited by
13References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1988 |
| Grant date | Dec 5, 1989 |
| Priority date | — |
| Expiry date | Mar 31, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12458
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A rotary drill bit is provided for boring earth formations which includes a bit blank and a metal matrix secured to the blank. The metal matrix includes a filler material dispersed therein. Cutting elements are mounted on the exterior face of the bit, and substantially all of the exposed internal and external surfaces of the bit are coated with an erosion and abrasion resistant hardfacing material bonded to the metal matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.