Patterned texturing of the seal surface for a roller cone rock bit
US8689907B2 · kind B2 · utility
4Cited by
27References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 28, 2010 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Mar 5, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/25
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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 produces a regular or repeated patterned dimpled surface which retains additional lubricant helpful in reducing friction in the boundary and mixed lubrication regimes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.