Patent ID: 7351137

Claim:
A heat dissipating fan with manual adjustment rotational speed, characterized with: a rotational speed adjustment device or switch provided in a corner screw hole at a front or back of a heat dissipating fan frame, the rotational speed adjustment device or switch being electrically connected to a power source of the fan by means of a power cord or other conductive metals, the adjustment device or switch being extended with a knob that is individually exposed out of the fan frame, the heat dissipating fan may be installed in any space that requires heat dissipation or to an outer periphery of a unit casing, to allow a user to adjust rotational speed of the heat dissipating fan at one's desire at any time, said heat dissipating fan with manual adjustment rotational speed includes one of the following: a heat dissipating fan that is extruded from aluminum or injection molded by plastic, said aluminum extruded heat dissipating fan is formed with heat dissipating fins at a periphery surface of an aluminum extruded frame, the aluminum extruded frame being formed with an opening at an appropriate location of one of the corner screw holes at the front or back thereof for receiving the rotational speed adjustment device or switch.