Waterproof axial flow fan
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United States of America Patent
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Jan 16, 2018
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N/A
app pub date -
Dec 15, 2014
filing date -
Dec 18, 2013
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Abstract
A waterproof axial flow fan includes: a rotor having a rotating shaft pivotally supported by a bearing in a rotatable manner, an impeller provided to a tip of the rotating shaft and a rotor cover; a stator having a winding and a circuit board, a surface of which is coated with an electrically insulating synthetic resin; and at least one ring collection groove part formed in a resin surface opposing to the rotor cover at an apex of the stator so as to surround a tip of a bearing holding part for holding the bearing.
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