Patent ID: 7225501
Filing Date: 2007-06-05
Classification: A47L

Abstract:
1. A cleaning device for cleaning a surface comprising: a base for movement along a surface; a suction nozzle associated with said base; a suction source for drawing liquid and dirt from said surface through said suction nozzle; a brush assembly operatively connected to said base; and wherein said brush assembly having at least one brush including a first set of pliable elements extending downwardly from said brush and contacting the surface, said pliable elements sloping downwardly and outwardly, said first set of pliable elements having at least a first group of pliable elements and a second group of pliable elements, each of said pliable elements of said second group of said first set extending downwardly from said brush at a length less than said first group of said first set, said second group of pliable elements of said first set being positioned inwardly from said first group of said pliable elements of said first set, wherein said first set of pliable elements are arranged in separate bundles forming a ring around said brush, each of said bundles includes said first and second groups of pliable elements, said second group of pliable elements having at least a first pliable element extending a first length, at least a second pliable element extending a second length greater than the first length of said first pliable element, and at least a third pliable element extending a third length greater than the second length of said second pliable element; wherein a substantial number of said pliable elements of said second group having an innermost pliable element and an outermost pliable element, each of said pliable elements having a working end, wherein said substantial number of said pliable elements are cut such that a plane extending from the bottom end of the innermost pliable element to the bottom end of the outermost pliable element is in the range of 40 to 50 degrees with respect to the cleaning surface.