FAN STRUCTURE
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United States of America Patent
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N/A
Issued Date -
May 29, 2014
app pub date -
Nov 23, 2012
filing date -
Nov 23, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A fan structure includes a hub and at least one set of blades connected to and extending away from the hub, each of the blades having a plurality of steps with a height difference formed away from the periphery of the hub, the height of the inside one of the steps higher than that of the outside one of the steps, thereby providing a disturbed flow-guiding effect so as to enhance the air pressure and the air flow of the wind flow field.
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