Magnetorheological fluids and related method of preparation
US6712990B1 · kind B1 · utility
0Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 14, 2002 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Jul 17, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/442
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Magnetorheological (MR) fluids, dispersions of magnetically soft particles in fluids (gases, liquids, or semi-solids such as greases), are disclosed. The present invention uses the initial steps of a sol-gel process to assist in preparation of MR fluids that have significantly enhanced stability and redispersibility, without the use of ceramic particles such as silica or bridging polymers such as PVP.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.