Upright water extraction cleaning machine

  • US 6,279,196 B2
  • Filed: 01/02/2001
  • Issued: 08/28/2001
  • Est. Priority Date: 11/06/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. 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 housing for applying liquid to a surface to be cleaned;

    a liquid supply tank for holding a supply of cleaning liquid;

    a liquid supply conduit liquidly 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 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 including a socket for selectively receiving the recovery tank and a cavity located rearwardly of the socket and receiving the vacuum source.

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