Magnetorheological fluids
US6932917B2 · kind B2 · utility
31Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2003 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Jul 19, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/447
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
One embodiment of the invention includes an MR fluid of improved durability. The MR fluid is particularly useful in devices that subject the fluid to substantial centrifugal forces, such as large fan clutches. A particular embodiment includes a magnetorheological fluid including 10 to 14 wt % of a hydrocarbon-based liquid, 86 to 90 wt % of bimodal magnetizable particles, and 0.05 to 0.5 wt % fumed silica.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.