Patent ID: 6348106
Filing Date: 2002-02-19
Classification: A47L,F04D

Abstract:
An airflow propulsion device for moving a flow of air and particulates through a vacuum cleaner, comprising:a hub having a hub axis; a plurality of vanes depending from the hub and extending in an approximately radial direction away from the hub axis, each vane having an outer edge spaced apart from the hub axis; and a housing disposed about the plurality of vanes, the housing having an inlet aperture proximate to the hub for directing the flow toward the vanes and first and second outlet apertures spaced apart from the inlet aperture for directing the flow away from the vanes, wherein the first outlet aperture has a first flow area, the second outlet aperture has a second flow area and the inlet aperture has an inlet flow area, and further wherein the inlet flow area is greater than a sum of the first and second flow areas.