Motor end cap positioning element for maintaining rotor-stator concentricity
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United States of America Patent
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-
Oct 2, 2012
Grant Date -
Feb 17, 2011
app pub date -
Aug 14, 2009
filing date -
Aug 14, 2009
priority date (Note) -
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Abstract
A motor is provided with a set of end cap guides on the ends of a stator winding assembly to pilot the placement of end caps into the correct placement relative to the stator winding assembly so that the rotor assembly is maintained concentric with the stator. The end cap guides may be rings fitting within the winding insulators on the ends of the stator stack or may be integrated as guide segments with the winding insulators to outline an interrupted cylindrical inner surface coinciding with the inner diameter of the stator winding assembly. The guides allow proper positioning of the rotor assembly without increasing the stator stack length.
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