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Cyclonic vacuum cleaner ribbed cyclone shroud

  • US 7,922,794 B2
  • Filed: 10/08/2008
  • Issued: 04/12/2011
  • Est. Priority Date: 10/08/2008
  • Status: Expired due to Fees
First Claim
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1. A cyclone separator for a vacuum cleaner, the cyclone separator comprising:

  • a cyclone chamber having an air inlet and an air outlet, the cyclone chamber being adapted to direct an airflow into a cyclonic pattern to remove a first amount of debris from the airflow;

    a filter shroud located within the cyclone chamber and separating the air inlet from the air outlet, the filter shroud comprising an air-pervious filter surface adapted to allow the airflow to pass from the air inlet to the air outlet and remove a second amount of debris from the airflow; and

    one or more protrusions associated with the filter surface, the one or more protrusions being configured and dimensioned to direct at least a portion of the airflow passing generally parallel to the filter surface away from the filter surface before passing through the filter surface;

    wherein the filter surface is generally cylindrical or frustoconical, and the one or more protrusions comprise a plurality of ribs extending in a generally helical pattern around the filter surface, the ribs being oriented generally perpendicular to the portion of the airflow passing generally parallel to the filter surface.

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