Motor end cap with interference fit
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United States of America Patent
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-
Oct 9, 2012
Grant Date -
Dec 29, 2011
app pub date -
Jun 23, 2010
filing date -
Jun 23, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A rotary machine (e.g., motor or generator) has end caps with plastic piloting rings that engage a stator's plastic winding frame in an interference fit, so that a rotor seated by bearings in the end caps is properly aligned with the stator. The flexibility of the plastic-to-plastic fit allows looser tolerances in comparison to machining of all-metal end caps, while the average circle of the piloting ring's outer diameter still assures proper concentricity of rotor shaft, bearings, piloting rings and stator.
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