Molded flywheel magnet cage
US6339271B1 · kind B1 · utility
25Cited by
54References
74Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1999 |
| Grant date | Jan 15, 2002 |
| Priority date | — |
| Expiry date | Dec 21, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2132
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flywheel (20) having a molded cage (30) formed around a plurality of magnets (34) attached to the flywheel (20). The cage (30) extends into one or more grooves (40,42) formed in the flywheel (20) to resist the shrinkage of the cage 30 inside diameter as it cools following an injection molding process. The gap (44) between the cage (30) and magnets (34) and an adjacent stator (32) is precisely controlled and minimized. Shutoff surfaces (36,38,46) formed on the flywheel (20) function as a portion of the die for injection molding of the cage (30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.