Patent ID: 7708789

Claim:
A vacuum cleaner comprising: a housing defining a cyclonic airflow chamber for separating contaminants from a dirt-containing airstream, said housing further comprising a cyclonic chamber inlet and an airstream outlet in fluid communication with said cyclonic airflow chamber; a nozzle housing including a suction opening, said suction opening being fluidly connected with said cyclonic chamber inlet; an airstream suction source fluidly connected to said suction opening and to the cyclonic airflow chamber for transporting dirt-containing air from the suction opening to the cyclonic airflow chamber, said suction source is adapted to establish and maintain a dirt-containing airstream from said suction opening to and through said cyclonic chamber and through the airstream outlet; a dirt-collecting bin mounted to the housing adjacent said cyclonic airflow chamber and in communication therewith to receive dirt separated from the airstream in the cyclonic airflow chamber; a hollow standpipe extending through the dirt-collecting bin, in communication with the airstream outlet of the cyclonic airflow chamber and extending through a wall in the dirt collecting bin; and a filter chamber mounted to the dirt-collecting bin has an inlet opening in communication with the standpipe to remove fine particles from the airstream that passes through the airstream outlet in the cyclonic airflow chamber.