Rotor including anti-rotation feature for multi-pole structure
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United States of America Patent
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Nov 17, 2015
Grant Date -
Sep 19, 2013
app pub date -
Mar 16, 2012
filing date -
Mar 16, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A permanently magnetizable rotor having a central rotor structure including a rotor shaft supporting a cylindrical backiron. The rotor further includes a multi-pole structure comprising circumferentially alternating pole elements, and a rotor cover extending longitudinally over the multi-pole structure. The rotor additionally includes an endcap including an engagement surface positioned in engagement with an end of the backiron. The endcap defines first and second anti-rotation features for preventing circumferential rotation of one or more of the pole elements about the backiron. The first anti-rotation feature is configured differently than the second anti-rotation feature and each anti-rotation feature defines a torque transmitting feature for transmitting a torque from different locations on the multi-pole structure.
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