Upright vacuum cleaner with full bag and clogged filter indicators thereon

  • US 6,026,539 A
  • Filed: 03/04/1998
  • Issued: 02/22/2000
  • Est. Priority Date: 03/04/1998
  • Status: Expired due to Term
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First Claim
Patent Images

1. A vacuum cleaner comprising:

  • a housing having a floor-engaging nozzle fluidly interconnected with a filter bag in a closed filter bag chamber in the housing through a suction passageway;

    an exhaust vent in the filter bag chamber to exhaust filtered air exiting from the filter bag chamber;

    a vacuum motor in the housing operably coupled to the suction passageway to draw dirty air through the floor-engaging nozzle and for passing the dirty air through the filter bag;

    an exhaust filter mounted in the exhaust vent;

    a sensor operably connected to the filter bag chamber to detect a condition representative of the flow of air through the exhaust filter element; and

    an exhaust filter indicator interconnected with the sensor for generating a signal when the condition reaches a predetermined level.

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