Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Distally supported on radial arm
Reexamination Certificate
2006-10-10
2006-10-10
Nguyen, Ninh H. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Distally supported on radial arm
C416S243000, C416S234000
Reexamination Certificate
active
07118345
ABSTRACT:
An impeller is applied to a centrifugal fan and includes fan blades and a hub. Each fan blade includes a first portion and a second portion. The first portion is located relatively close to the hub and the first portion is coupled to the second portion. The first portion has a windward side and a leeward side, and the windward side is parallel to the leeward side. The second portion is located relatively far away from the hub. The second portion has a windward side and a leeward side, and the windward side and the leeward side are two curved surfaces with different specific curvatures.
REFERENCES:
patent: 5527149 (1996-06-01), Moss et al.
patent: 6454522 (2002-09-01), Sakamoto et al.
patent: 6579064 (2003-06-01), Hsieh
patent: 2002/0114698 (2002-08-01), Mimura
Chen Heng-Yi
Ho Chieh-Lung
Huang Kuo-Chen
Huang Wen-Shi
Lee Chin-Fu
Birch & Stewart Kolasch & Birch, LLP
Delta Electronics , Inc.
Nguyen Ninh H.
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