Axial fan

Rotary kinetic fluid motors or pumps – Axial flow runner with blades extending radially inward and...

Reexamination Certificate

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Details

C415S116000, C415S220000, C415S223000, C415S211200, C415S218100, C415S219100, C416S175000, C416S203000, C416S19300A

Reexamination Certificate

active

07988407

ABSTRACT:
An axial fan is provided. The axial fan includes a base, a rotor, a guide and a plurality of blades. The guide connects to a guide tube to provide airflow. Each blade has a passive part and an active part, wherein the passive part is driven by the airflow from the guide to rotate the active part synchronously. The axial fan increases air quantity and decreases air pressure to provide efficient heat dissipation.

REFERENCES:
patent: 1225053 (1917-05-01), Pitts, Sr.
patent: 3262635 (1966-07-01), Smuland
patent: 3282053 (1966-11-01), Messerschmitt
patent: 3904324 (1975-09-01), Flatt et al.
patent: 4895489 (1990-01-01), Kohama et al.
patent: 5275533 (1994-01-01), Kapich
patent: 6591873 (2003-07-01), McNeil
patent: 6652225 (2003-11-01), Esa
patent: 6910862 (2005-06-01), Horng et al.
patent: 2006/0222536 (2006-10-01), Chang et al.

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