Molded flywheel magnet cage
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United States of America Patent
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Apr 15, 2003
Grant Date -
Jul 4, 2002
app pub date -
Jan 8, 2002
filing date -
Dec 21, 1999
priority date (Note) -
Expired
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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.
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