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Carpet cleaning machine with perimeter vacuum capability

  • US 5,077,863 A
  • Filed: 10/31/1990
  • Issued: 01/07/1992
  • Est. Priority Date: 10/31/1990
  • Status: Expired due to Fees
First Claim
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1. An improved machine for cleaning a carpet made of fibers, such machine stroking substantially-dry cleaning granules into and through the carpet and removing such granules therefrom, the machine including:

  • a pair of counter-revolving brushes for stroking the granules into and across the carpet fibers;

    a shroud having a bottom surface spaced from the brushes, such shroud forming a chamber;

    at least one vacuum nozzle having an inlet for receiving granules to be removed from the carpet, such inlet opening into the chamber for creating a vacuum therein;

    the shroud terminating in a lower perimeter having a front edge, a rear edge and two side edges extending between the front edge and the rear edge;

    at least the front edge and the rear edge being spaced upward from the carpet to define a granule exit opening between each edge and the carpet;

    a pair of skirts, one each attached at the front edge and at the rear edge and movable with respect to such edge for selectively closing the exit openings when removing granules from the carpet;

    the skirts thereby causing high velocity air to be drawn through and across the carpet fibers for more efficient removal of such granules.

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