Patent ID: 7475712

Claim:
A portable surface cleaning apparatus, comprising: a base housing adapted for movement along a surface to be cleaned; an upright handle pivotally mounted to the base housing; a liquid dispensing system comprising: a liquid dispenser associated with the base module for applying liquid to a surface to be cleaned; a liquid supply tank for holding a supply of cleaning liquid; a liquid supply conduit fluidly connected to the liquid supply tank and to the dispenser for supplying liquid to the dispenser; a liquid recovery system comprising: a recovery tank removably mounted on the base housing and having a liquid recovery chamber for holding recovered liquid; a suction nozzle associated with the base housing and adapted to draw dirty liquid from the surface to be cleaned; a working air conduit extending between the recovery chamber and the suction nozzle; a vacuum source in fluid communication with the recovery chamber for generating a flow of working air from the nozzle through the working air conduit and through the recovery chamber to thereby draw dirty liquid from the surface to be cleaned through the nozzle and working air conduit, and into the recovery chamber to thereby recover the dirty liquid from the surface to be cleaned; the improvement comprising: the base housing includes a well for selectively receiving the liquid supply tank and the base housing further includes an enclosed chamber juxtaposed to the well and the vacuum source is mounted in the enclosed chamber.