Base stock lubricant blends for enhanced micropitting protection
US7683013B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2006 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Jun 30, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lubricant formulation and method of blending a lubricant formulation is disclosed. The lubricant formulation comprises at least two base stocks. The first base stock comprises a viscosity greater than 100 cSt, Kv100° C. The second base stock comprises a viscosity less than 10 cSt, Kv100° C. The lubricant formulation provides excellent micropitting protection for gears including large gears that are used in wind turbines. In addition, the lubricant may also have a viscosity greater than 38 cSt (Kv 100° C.), a viscosity index greater than 161 and micropitting protection level of a FVA 54 micropitting Test Fail Load Stage greater than 10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.