Patent Number: 8,721,266

Title: Cooling fan and rotor of cooling fan

Abstract: A cooling fan includes a frame and a rotor received in the frame. The rotor includes a hub, blades extending outwardly and radially from the hub, and a cover plate connected with the hub. The hub includes a top wall and a sidewall extending from a circumference of the top wall. The top wall of the hub defines a plurality of blind holes on an outer surface thereof, and the blind holes are shaded by the cover plate.

Inventors: Chang; Yao-Ting (Tu-Cheng, TW), Wei; Chao-Ke (Tu-Cheng, TW)

Assignee: Hon Hai Precision Industry Co., Ltd.

International Classification: F03D 11/00 (20060101)

Expiration Date: 5/13/12018