Patent ID: 7299518
Filing Date: 2007-11-27
Classification: A47L

Abstract:
1. In a vacuum cleaner having a cleaning head operable to engage flooring materials, such as carpet, to remove dirt particles from said flooring materials and to convey said dirt particles in an air stream moving through a passageway within said cleaning head to a remote filtration system that extracts said dirt particles from said air stream before discharging said air stream into the atmosphere, said cleaning head having an agitating device operable within a cleaning zone at a forward end of said passageway to engage said flooring material for mechanically separating said dirt materials from said flooring material, the improvement comprising: a magnetic flux generator that creates a magnetic field at said cleaning zone extending across the entire transverse width dimension of said cleaning head and extending into said flooring material at said agitating device to disrupt magnetically a static attraction between said dirt particles and said flooring material to facilitate the operation of said agitating device in effecting separation of said dirt particles from said flooring material.