Patent ID: 6301744
Filing Date: 2001-10-16
Classification: A47L,Y10S

Abstract:
A method for drawing a flow of air and particulates into a vacuum cleaner, comprising:drawing the flow of air and particulates through an intake opening of the vacuum cleaner, the intake opening having an intake flow area;passing the flow of air and particulates from the intake opening into an airflow propulsion device while maintaining a flow area occupied by the flow of air and particulates approximately equal to the intake flow area;passing the flow of air and particulates through the airflow propulsion device to a filter element, wherein passing the flow of air and particulates to the filter element includes passing the flow through a manifold and expanding the flow area occupied by the flow as the flow passes through the manifold; andseparating at least a portion of the particulates from the flow of air at the filter element.