Thermally matched composite sleeve
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United States of America Patent
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Aug 7, 2012
Grant Date -
Jan 28, 2010
app pub date -
Jul 1, 2009
filing date -
Jul 28, 2008
priority date (Note) -
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Abstract
A sleeve about an electric machine rotor core and the plurality of permanent magnets has a fiber-reinforced composite layer about the rotor core and the plurality of permanent magnets. At least a portion of the sleeve about the rotor core and the permanent magnets has a coefficient of thermal expansion that is substantially equal to the aggregate coefficient of thermal expansion of the rotor core and the plurality of permanent magnets.
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