the brushes application_number US 60421790 A description referring more specifically to the drawings the numeral 10 broadly indicates a swimming pool vacuum cleaner comprising an upper or turbine housing 11 and a lower or brush housing 12 bolts 13 connect the two housings the lower housing 12 is of generally u shaped configuration with side walls 14 terminating at the rear 15 of the housing and defining an opening extending across the rear of the housing the housing 12 also includes a top wall 16 a peripheral flange 17 extends about the base of the upper housing 11 and the bolts 13 extend through the flange 17 and into the top 16 of the lower housing 12 a rotatable shaft 20 extends loosely through the two housings and is journaled in a thrust bearing 21 beneath the top 16 of the lower housing 12 a mounting plate 22 is fixed to or formed integral with the lower end of the shaft 20 in fig2 and a visual efficiency indicator 23 extends from the upper end of the shaft and beyond the upper turbine housing 11 a circular brush holder 24 is fastened as by screws 25 to the mounting plate 22 the brush holder has a plurality of openings 26 therethrough for the passage of water as shown by directional arrows in fig2 a foraminated screen 27 loosely surrounds the shaft 20 between the brush holder 24 and the top wall 16 of the brush housing 12 the screen 27 is removably mounted between flanges 30 on the inner surface.