Molded flywheel magnet cage
US6548925B2 · kind B2 · utility
15Cited by
27References
49Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2002 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Jan 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2132
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flywheel having a molded cage formed around a plurality of magnets attached to the flywheel. The cage extends into one or more grooves formed in the flywheel to resist the shrinkage of the cage inside diameter as it cools following an injection molding process. The gap between the cage and magnets and an adjacent stator is precisely controlled and minimized. Shutoff surfaces formed on the flywheel function as a portion of the die for injection molding of the cage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.