Antifoam agent and method for use in automatic transmission fluid applications involving high pressure pumps
US7060662B2 · kind B2 · utility
0Cited by
15References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2003 |
| Grant date | Jun 13, 2006 |
| Priority date | — |
| Expiry date | Feb 12, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/045
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to the use of a high level of a silicon-containing antifoam agent in automatic transmission fluid (“ATF”) applications. More specifically, the invention relates to a formulation and method for the reduction or elimination of pump whine that occurs in high-pressure pumps used to circulate transmissions fluids in vehicles. The invention also relates to fully formulated ATFs, to transmissions lubricated with such ATFs, and to vehicles containing transmissions lubricated with such ATFs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.