Cooling fan

Details Cooling fan Cooling fan

2008-07-15

2008-07-15

Dowling, William C. (Department: 2851)

Optics: image projectors

Temperature control

Blower

C353S057000, C417S423140

Reexamination Certificate

active

11020247

ABSTRACT:
Disclosed is a cooling fan including a fan rotated by a motor, for forcibly circulating the air, and a fan housing having a through hole with a predetermined inside diameter so that the fan can be mounted thereon. A curvature radius of the end of the inner circumference of the through hole sucking the air is smaller than a curvature radius of the end of the inner circumference of the through hole discharging the air. As a result, the cooling fan can minimize noises in the operation.

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patent: 1473243 (2004-02-01), None

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