Fan and impeller thereof

Details Fan and impeller thereof Fan and impeller thereof

2011-03-15

2011-03-15

Look, Edward (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Perimetric blading extending axially between annular members

C416S187000, C416S195000, C416S203000, C417S423100

Reexamination Certificate

active

07905708

ABSTRACT:
A fan comprises an impeller and a motor. The impeller has a hub, a plurality of blades and a plurality of reinforced elements. The blades are disposed around the hub. At least one reinforced element is disposed on the active surfaces of two adjacent blades. The blades and the reinforced elements are integrally formed as a single piece. The motor connects to the impeller for driving it to rotate.

REFERENCES:
patent: 1068512 (1913-07-01), Ljungstrom
patent: 1618284 (1927-02-01), Hodgkinson
patent: 1618285 (1927-02-01), Kasley
patent: 1888795 (1932-11-01), Faber
patent: 4191508 (1980-03-01), Kuroda et al.
patent: 4834612 (1989-05-01), Lahn et al.
patent: 5971709 (1999-10-01), Hauser
patent: 7061758 (2006-06-01), Liu et al.
patent: 7399161 (2008-07-01), Kao et al.
patent: 2006/0275115 (2006-12-01), Wu et al.

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