Upright extraction cleaning machine

  • US 6,167,587 B1
  • Filed: 07/08/1998
  • Issued: 01/02/2001
  • Est. Priority Date: 07/09/1997
  • Status: Expired due to Term
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First Claim
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1. A portable surface cleaning apparatus, comprising:

  • a base module for movement along a surface and having a forward portion;

    an upright handle pivotally attached to the base module;

    a fluid recovery system comprising;

    a tank on the base module having a fluid recovery chamber for holding recovered fluid;

    a suction nozzle associated with the base module;

    a working air conduit extending between the tank 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;

    a liquid dispensing system comprising;

    a fluid dispensing nozzle associated with the base module for applying cleaning fluid to a surface to be cleaned;

    a fluid supply chamber for holding a supply of cleaning fluid;

    a fluid supply conduit including a pump fluidly connected to the fluid supply chamber and to the dispensing nozzle for supplying cleaning fluid to the dispensing nozzle;

    a pump drive shaft for driving the pump;

    an agitator brush mounted in the forward portion of the base module;

    a motor mounted in the base module and having a motor drive shaft;

    a first mechanical connector between the motor drive shaft and the pump drive shaft; and

    a second mechanical connector between the pump drive shaft and the agitator brush whereby the motor drives both the agitator brush and the pump through the first and second mechanical connections.

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