Cooling fan

Details Cooling fan Cooling fan

2006-07-07

2009-02-17

Nguyen, Tran N (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S06700R, C360S099080, C415S118000, C415S213100, C415S214100

Reexamination Certificate

active

07492070

ABSTRACT:
A cooling fan includes: a casing having a surrounding wall that defines an accommodating space; a circuit board disposed in the accommodating space and including a substrate and a control circuit, the substrate having a center portion that has a peripheral edge, and a plurality of spaced apart connecting beams that extend from the peripheral edge of the center portion and that are connected directly and securely to the surrounding wall; a hollow shaft secured directly to and protruding from the circuit board into the accommodating space; a stator mounted securely on the center portion of the substrate of the circuit board and coupled to the control circuit; a fan blade unit disposed in the accommodating space and including an annular hub journalled rotatably to the hollow shaft; and a rotor mounted on the hub.

REFERENCES:
patent: 5650678 (1997-07-01), Yokozawa et al.
patent: 6320291 (2001-11-01), Lin et al.
patent: 6608412 (2003-08-01), Horng et al.
patent: 6926497 (2005-08-01), Lin et al.
patent: 7442005 (2008-10-01), Yeh et al.
patent: 2007/0096570 (2007-05-01), Lin et al.

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