Heat dissipation fan
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United States of America Patent
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Oct 4, 2011
Grant Date -
Dec 13, 2007
app pub date -
Feb 22, 2007
filing date -
Jun 8, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A heat dissipation fan includes a housing, a first rotor, a second rotor, a base and a plurality of static blades. The first rotor has a shaft and a plurality of rotor blades. The second rotor is coupled to the first rotor and has a plurality of rotor blades. The base is disposed in the housing for supporting the first and second rotors. The static blades are disposed between the housing and the base, wherein a rear portion of each static blade extends along an axial line of the heat dissipation fan for improving the working efficiency of the second rotor.
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