Method of texturing a bearing surface of a roller cone rock bit
US8418332B2 · kind B2 · utility
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22References
23Claims
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Inventor
Key dates
| Filing date | Mar 5, 2009 |
| Grant date | Apr 16, 2013 |
| Priority date | — |
| Expiry date | Feb 9, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49707
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Surface texturing is employed to modify the topography of one or more surfaces (radial or cylindrical) of the bearing 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.