Patent ID: 9388826
Filing Date: 2016-07-12
CPC Classification: F04D

Claim Text:
1. A heat dissipating fan, comprising: a frame comprising a base and a top cover disposed on the base, the base comprising a bottom plate, a first sidewall, a second sidewall connecting to the first sidewall, and a third sidewall spaced from the first sidewall and the second sidewall; an impeller rotatably received in the frame; an air inlet, the top cover, the bottom plate, the first sidewall and the third sidewall cooperatively defining the air inlet therebetween; and an air outlet, the top cover, the bottom plate, the second sidewall and the third sidewall cooperatively defining the air outlet therebetween; wherein a portion of the bottom plate positioned between the first sidewall and the third sidewall is cut to form a first depressed portion, and the first depressed portion is generally W-shaped, with the first depressed portion defining two symmetrical notches, having a central arc-shaped protrusion positioned between the two symmetrical notches, and two edges connected to two opposite ends of the central arc-shaped protrusion, respectively.