Upright vacuum cleaner with cyclonic airflow

  • US RE38,949 E1
  • Filed: 02/12/2002
  • Issued: 01/31/2006
  • Est. Priority Date: 01/09/1998
  • Status: Expired due to Term
First Claim
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1. A vacuum cleaner comprising:

  • a housing having a cyclonic airflow chamber for separating contaminants from a suction airstream, said housing including a floor, a top wall, a suction airstream inlet, and a suction airstream outlet, said airstream inlet and said airstream outlet being in fluid communication with said cyclonic airflow chamber;

    a suction opening defined on said housing, said suction opening being fluidically connected with said airstream inlet;

    an airstream suction source located on said housing, said suction source having an inlet fluidically connected to said airstream outlet and a suction source exhaust outlet, said suction source selectively establishing and maintaining a suction airstream from said suction opening to said suction source exhaust outlet;

    a main filter support upwardly from the floor of the housing for releasably accruing a main filter element centrally in said cyclonic airflow chamber;

    a main filter element secured to said main filter support; and

    , a dirt cap selectively positioned in said housing, said main filter element being positioned in said dirt cup.

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