Impeller for radial-flow heat dissipating fan

Details Impeller for radial-flow heat dissipating fan Impeller for radial-flow heat dissipating fan

2007-04-24

2007-04-24

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Radially extending web or end plate

Reexamination Certificate

active

10920384

ABSTRACT:
An impeller for a radial-flow heat dissipating fan includes a hub and a plurality of blades surrounding the hub. The blades are connected to a circumference of the hub to allow joint rotation of the hub and the blades. The impeller includes an air inlet side and a bottom side. Distribution of the blades at the air inlet side of the impeller is sparser than that at the bottom side of the impeller, thereby increasing an air inlet amount.

REFERENCES:
patent: 1243615 (1917-10-01), Liggett
patent: 3479017 (1969-11-01), Thikotter
patent: 4904158 (1990-02-01), Kun
patent: 5360317 (1994-11-01), Clausen et al.
patent: D443281 (2001-06-01), Sodergard
patent: 6893218 (2005-05-01), Ito

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