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Wet and/or dry vacuum cleaning unit

  • US 5,168,599 A
  • Filed: 07/15/1991
  • Issued: 12/08/1992
  • Est. Priority Date: 12/01/1989
  • Status: Expired due to Term
First Claim
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1. A vacuum system having a closed air flow loop for cleaning rugs and floor or other surfaces which comprises:

  • a) a vacuum source having a suction side and a controlled air flow pressure side (exhaust side);

    b) a pair of spaced apart wheels positioned at the rear of said vacuum system and adapted to ride on the surface to be cleaned;

    c) a head assembly positioned in said system forwardly of said pair of spaced apart wheels and adapted to ride on the rug or floor or other surface to be cleaned in order to form said closed air flow loop;

    d) at least one rotatable brush within said head assembly;

    e) means of communicating the suction side of the vacuum source with the head assembly to provide suction within said head assembly for picking up dirt or other materials;

    f) a turbine motor;

    g) means communicating the air exhaust side of the vacuum source with said head assembly, said turbine motor being positioned within said means whereby the air exhaust impinges on and drives the turbine motor;

    h) means interconnecting the brush and the turbine motor whereby the turbine motor drives the brush, said means interconnecting being at a right angle to the axis of rotation of the brush; and

    i) peripheral air containment means associated with said head assembly for preventing air from entering or leaving around the periphery of said head assembly when it rides on said surface to be cleaned.

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