Heat dissipation fan

Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Plural rigidly related blade sets

Reexamination Certificate

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Details

C415S211200, C415S220000, C416S19800R

Reexamination Certificate

active

08029236

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.

REFERENCES:
patent: 2037395 (1936-04-01), Seelig
patent: 6540479 (2003-04-01), Liao et al.
patent: 6663342 (2003-12-01), Huang et al.
patent: 2002/0159883 (2002-10-01), Simon et al.
patent: 2005/0046284 (2005-03-01), Kudo et al.
patent: 2006/0045736 (2006-03-01), Lee et al.
patent: 2007/0284955 (2007-12-01), Chang et al.
patent: 2007/0286720 (2007-12-01), Chang et al.
patent: 2007/0286721 (2007-12-01), Chang et al.
patent: 54009007 (1979-01-01), None

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