Permanent magnet bonding construction
US7638914B2 · kind B2 · utility
4Cited by
16References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 1, 2007 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Mar 2, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/17
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Bonding geometries are disclosed between permanent magnets and steel portions of magnetic assemblies. When employed in permanent magnet motors, this particular bonding construction reduces or even eliminates the loosening of permanent magnets inside of electric motors. The bonding geometry consists of interlocking protrusions and voids at the bonding interface. A bonding agent is employed that may be filled with finely divided iron or other magnetic material. The result is a strong bond between the permanent magnet and steel assembly portions with virtually no loss in overall magnetic properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.