Stator
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United States of America Patent
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Jun 24, 2014
Grant Date -
Feb 21, 2013
app pub date -
Jul 31, 2012
filing date -
Aug 20, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A stator includes a core-back portion, teeth portions, insulators, and coils. The teeth portions extend radially from a circumferential surface of the core-back portion. The insulators are respectively mounted to the teeth portions. The coils are respectively mounted to the insulators. A tip end of the tooth portion has a circumferential width equal to or smaller than that of a base end of the tooth portion. The tip end has an axial width equal to or smaller than that of the base end. The insulator includes a tube portion accommodating the tooth portion. The tube portion includes a first opening existing at the tip end and a second opening existing at the base end. The first opening has an axial width smaller than an axial width of the second opening in a state that each of the insulators is removed from each of the teeth portions.
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