Fan device and vane thereof
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United States of America Patent
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Jun 23, 2015
Grant Date -
Jan 30, 2014
app pub date -
Oct 4, 2012
filing date -
Jul 27, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A fan device includes a frame including an axle base and a vane including a hub disposed on the axle base pivotally and blade assemblies disposed circumferentially on the sidewall surface. The hub includes a windward side and a sidewall surface. Each blade assemblies includes a first blade and a second blade protruded from the sidewall surface radially. The second blade is farther away than the first blade from the windward side. The angle of between an extending surface of a second side edge of the second blade extending and the windward side is greater than another angle of between an extending surface of a first side edge of the first blade extending and the windward side. The gap between the partial second side edge and the windward side is less than another gap between the first side edge and the windward side.
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