Axial flow fan

Details Axial flow fan Axial flow fan

2006-11-28

2006-11-28

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Protective screen or guard

Water or marine propellers

C415S220000, C415S226000

Reexamination Certificate

active

07140842

ABSTRACT:
An axial flow fan includes a frame, a driving device and a fan blade part. The driving device is disposed in the frame and the fan blade part provides a hub member and a plurality of fan blades attached to the outer rim of the hub member and the hub member engaging with the driving device. It is characterized in that the fan blades are disposed outside the frame and the lower edges of the fan blades are flush with or higher than the upper edge of the frame.

REFERENCES:
patent: 6481963 (2002-11-01), Lin et al.
patent: D489441 (2004-05-01), Wagner
patent: 6869269 (2005-03-01), Huang et al.
patent: 02298697 (1990-12-01), None

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