Electric Fan
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United States of America Patent
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Issued Date -
Oct 22, 2015
app pub date -
Apr 17, 2015
filing date -
Apr 17, 2014
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
An electric fan has an electric motor driving an axial fan. The fan has a cup-shaped hub, with a front wall, and a side wall from which there extends a plurality of outer blades. The motor has an outer rotor including a rotor cap to which the front wall of the hub is attached. From the inner surface of the hub and/or from the outer surface of the rotor cap, there extend protruding formations which, when the fan performs an oscillation of predetermined extent with respect to the rotor, impact the rotor cap and/or the hub, limiting the extent of the oscillation of the fan with respect to the rotor.
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