IMPELLER, AIR-SENDING APPARATUS, AND CLEANING MACHINE
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United States of America Patent
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Issued Date -
Jan 17, 2019
app pub date -
Jul 2, 2018
filing date -
Jul 2, 2018
priority date (Note) -
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Abstract
An impeller includes a main plate spreading radially with respect to the center axis, a plurality of blades provided on an upper surface of the main plate and arranged side by side in a circumferential direction, a shroud connected to tops of the plurality of blades and having an intake port that is an opening extending upward, and a mount portion provided on the upper surface of the main plate and positioned on an inner side with respect to a radially outer end of the main plate. The mount portion has a plurality of recesses each being depressed downward from an upper surface of the mount portion and extending in a direction away from the center axis.
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