Fan and impeller thereof

Details Fan and impeller thereof Fan and impeller thereof

2007-10-16

2007-10-16

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

With weight-balancing means

C416S500000

Reexamination Certificate

active

11354901

ABSTRACT:
An impeller includes a hub and at least one blade. In this case, the hub has at least one balancing portion disposed on hub and arranged with respect to a center of the hub. The balancing portion has at least one corner. The blades are disposed around the hub. In addition, a fan including the impeller is also provided. The impeller and the fan can enhance the rotation stability. As a result, the product reliability and lifetime can be increased. Furthermore, the impeller and the fan facilitate the balancing object to be separated from the tool at the corner.

REFERENCES:
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patent: 2310412 (1943-02-01), Flanders
patent: 3291446 (1966-12-01), Huebner
patent: 3904306 (1975-09-01), Navelsaker
patent: 4047692 (1977-09-01), Swin, Sr.
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patent: 4784012 (1988-11-01), Marra
patent: 5547365 (1996-08-01), Chuang
patent: 7063507 (2006-06-01), Hsieh
patent: 942648 (1963-11-01), None
patent: 59-12101 (1984-01-01), None
patent: 787731 (1980-12-01), None

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