Electrical generator with ferrofluid bearings
US6809427B2 · kind B2 · utility
41Cited by
43References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2004 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Feb 2, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/088
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical generator includes a magnet constrained to move relative to a conductor by a support structure, with a ferrofluid bearing providing an ultra low friction interface between the magnet and support structure. The assembly has a critical angle of displacement from a horizontal static position of less than 1 degree, and preferably less than 10 minutes. An electrical signal is generated in the conductor by the moving magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.