Air fan

Details Air fan Air fan

2005-06-21

2005-06-21

Nguyen, Ninh H. (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Vane or deflector

C416S20400A, C416S24400R

Reexamination Certificate

active

06908282

ABSTRACT:
An air fan mainly includes a frame and a blade portion. The blade portion is formed from a hub and a plurality of blades spaced around the hub; and the frame includes a plurality of locating members, and a driving section fixedly supported at inner ends of the locating members to locate at a center of the frame for the hub to rotatably connect thereto. The inner ends of the locating members are upward bent to axially extend into the frame by a predetermined height, and the hub is axially shortened by a length corresponding to the predetermined height of the bent inner ends of the locating members, so that a lower surface of the driving section is vertically spaced from a bottom surface of the frame, enabling airflows produced by the blade portion to move to a space below the lower surface of the driving section.

REFERENCES:
patent: 4063852 (1977-12-01), O'Connor
patent: 5188508 (1993-02-01), Scott et al.
patent: 6244818 (2001-06-01), Chang
patent: 6579064 (2003-06-01), Hsieh

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