Aluminide coated bearing elements for roller cutter drill bits
US5161898A · kind A · utility
92Cited by
25References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 5, 1991 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | Jul 5, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S384/913
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A roller cutter drill bit (10) has separate bearing elements (82, 84, 86) positioned between a journal (20) and a roller cutter (60) mounted for rotation on the journal (20). The bearing elements (82, 84, 86) are formed of a superalloy material and the bearing surfaces of the bearing elements (82, 84, 86) have an aluminide coating applied thereon to form a bearing surface stable at operating temperatures over 500 F. and as high as 1000 F.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.