Patent ID: 6609269
Filing Date: 2003-08-26
Classification: A47L,B01F,C11D,F16K,H05B

Abstract:
A portable surface cleaning apparatus, comprising:a housing adapted for movement along a surface to be cleaned; a liquid dispensing system mounted to the housing and comprising: a liquid dispenser for applying liquid to the 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 mounted to the housing and comprising: a recovery tank removably mounted in the housing and having a liquid recovery chamber for holding recovered liquid, the recovery tank further having an inlet opening; a suction nozzle at a front portion of the housing, forwardly of the recovery tank and adapted to draw dirty liquid from the surface to be cleaned; a first working air conduit extending rearwardly from the suction nozzle to an inlet opening to the recovery chamber; an accessory hose mounted at one end to a rear portion of the housing behind the recovery tank for optional above floor cleaning; a second working air conduit connected at a first end to the accessory hose one end and, at another end forwardly of the recovery tank, connected to the inlet opening to the recovery chamber, the second working air conduit being formed of a unitary duct; a vacuum source in fluid communication with the recovery chamber for generating a flow working air from the nozzle and the accessory hose through the first and second working air conduits and through the recovery chamber to thereby draw dirty liquid from the surface to be cleaned through the nozzle and accessory hose and the first and second working air conduits, and into the recovery chamber to thereby recover dirty liquid from the surfaces to be cleaned; and a conversion valve mounted between the first and second working air conduits and the inlet to the recovery chamber to selectively connect the vacuum source to either the suction nozzle or to the accessory hose.