Texturing of the seal surface for a roller cone rock bit
US8322174B2 · kind B2 · utility
0Cited by
21References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 2011 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Jun 30, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/479
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Surface texturing is employed to modify the topography of one or more surfaces (radial or cylindrical) of the sealing system for a roller cone rock bit. The surface texturing results in a dimpled surface which retains additional lubricant helpful in reducing friction in the boundary and mixed lubrication regimes. Shot peening is disclosed as one method for texturing the desired surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.