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Upright vacuum cleaner with cyclonic airflow

DC
  • US 7,146,681 B2
  • Filed: 11/29/2004
  • Issued: 12/12/2006
  • Est. Priority Date: 01/09/1998
  • Status: Expired due to Fees
First Claim
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1. A vacuum cleaner comprising:

  • a housing including a cyclonic airflow chamber adapted for separating dust and dirt from an airstream, wherein a suction opening is in fluid communication with an inlet of said cyclonic airflow chamber;

    a handle for manipulating said housing over a surface to be cleaned;

    an airflow source located in said housing and having an airflow inlet in fluid communication with an outlet of said cyclonic airflow chamber and an airflow outlet;

    a main filter interposed between a downstream end of said cyclonic airflow chamber and a conduit leading to said airflow source for filtering dust and dirt from the airstream that passes through said cyclonic airflow chamber, wherein said main filter comprises a thermoplastic material, said main filter being selectively removeable from said housing; and

    ,a dust cup mounted to said housing and defining at least a portion of said cyclonic airflow chamber for receiving and retaining dirt and dust separated from the airstream, said dust cup being selectively detachable from said housing for emptying.

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