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Airflow indicator

  • US 6,467,123 B1
  • Filed: 06/07/2000
  • Issued: 10/22/2002
  • Est. Priority Date: 06/07/2000
  • Status: Expired due to Fees
First Claim
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1. An airflow indicator for a vacuum cleaner, comprising:

  • a housing, said housing comprising a first end and a second end;

    a wheel chamber defined at said first end of said housing;

    a rotatable wheel mounted in said wheel chamber;

    an air inlet formed adjacent said first end of said housing;

    an air passageway formed within said housing adjacent said rotatable wheel and said air inlet;

    a valve mounted within said housing adjacent said air passageway, wherein said valve comprises a cross slit which opens in response to a change in vacuum pressure within a casing of said vacuum cleaner; and

    an air outlet formed in said housing.

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