Patent ID: 6481050
Filing Date: 2002-11-19
Classification: A47L

Abstract:
A motor-fan assembly for a vacuum cleaner, the motor-fan assembly comprising:a motor housing having a cooling air inlet, a working air inlet, and a working air outlet formed therein, said working air outlet fluidly communicating with the working air inlet; a motor positioned within said housing having a motor shaft; a cooling fan positioned adjacent the cooling air inlet and coupled to the motor shaft, the cooling fan drawing cooling air into the motor housing through the cooling air inlet to cool the motor; a working fan positioned between the working air inlet and the working air outlet and coupled to the shaft; said working fan drawing working air into the motor housing through the working air inlet and blowing the working air out of the motor housing through the working air outlet; at least one hole formed in a wall separating the working fan from the cooling air inlet; and at least one hole formed in the working fan allowing the cooling air to flow through the working fan and be blown out the working air outlet.