Patent ID: 7377284

Claim:
In a portable surface cleaning machine for moving over a surface to be cleaned and producing a pressurized cleaning spray directed onto the surface, said machine including an elongated spinner bar having a first end, a second end, and a rotary mount therebetween, said spinner bar constructed and arranged to rotate in a plane parallel to the surface to be cleaned, the improvement comprising: said spinner bar defined by a single tubular member having sealed ends and a plurality of apertures extending through a side wall of said tubular member constructed and arranged for accepting spray nozzles; a first array of spray nozzles at said first end of said spray bar and a second array of spray nozzles at said second end of said spray bar, said first array and said second array each having an outermost nozzle and an inner nozzle, said outermost nozzle fixedly inclined at a first compound angle with respect to said plane to direct said cleaning spray at said surface on a rearward side of a vertical axis extending through said spray bar to provide motive force to cause rotation of said spray bar, said nozzle also angled to spray outwardly to spray beyond the distal end of said spinner bar and said inner nozzle fixedly inclined at a second substantially vertical angle with respect to said plane to direct said cleaning spray at said surface along said vertical axis extending through said spray bar, said inner nozzle and said outermost nozzle being positioned along a longitudinal axis of said spray bar so that a portion of the spray pattern produced by said inner nozzle overlaps a portion of the spray pattern produced by said outermost nozzle during rotation of said spinner bar, whereby said outer nozzles direct spray beyond the distal ends of said spinner bar to increase the effective width of the cleaned path and, whereby said overlapping spray patterns cause the cleaned area to have a uniform appearance.