Connolly Bove Lodge & Hutz
Heat dissipating fan for an induction motor
 A heat dissipating fan for an induction motor comprises a motor shaft with a circular groove and an end part. A fan has blades and a hollow central shaft with a hole, and tennons are provided on an inner wall of the hole for fitting with the circular groove. A protection cover has an opening being passed through by the motor shaft. Furthermore, heat releasing fins are provided on the protection cover and space apart with each other surrounding the opening. The fan is characterized by that the blades is attached to the fan and is fixed to an annular base plate. The base plate has a slanted curvy surface structure. When said fan is rotating synchronously with said motor shaft, the air current can be directed smoothly and backwards into the motor. 
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inventional inventional
Chin-Chin
Chang