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Carpet cleaning machine with improved system for removing dirty material

  • US 5,761,764 A
  • Filed: 10/15/1996
  • Issued: 06/09/1998
  • Est. Priority Date: 10/15/1996
  • Status: Expired due to Term
First Claim
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1. In a carpet cleaning machine including (a) a centrifugal separator with an air stream exit mouth having a mouth area, and (b) a vacuum motor for drawing air through the separator, the improvement comprising:

  • a first air flow guide spaced inwardly from the mouth and including a first aperture having a first area less than the mouth area; and

    a second air flow guide fixed with respect to the first guide and including a second aperture having a second area less than the first area;

    and wherein;

    the flow guides include a cavity therebetween for capturing dirty material removed from a carpet and entering the first aperture, thereby causing the dirty material to fall along a path spaced from the exit mouth when the vacuum motor is turned off.

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