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Powered cleaning appliance

  • US 7,861,352 B2
  • Filed: 07/16/2008
  • Issued: 01/04/2011
  • Est. Priority Date: 04/02/2004
  • Status: Active Grant
First Claim
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1. An autonomous cleaning appliance comprising:

  • a housing;

    a dirt container disposed in the housing and including a first dirt inlet in a first side of the dirt container, wherein the dirt container does not communicate with a suction source;

    a first brushroll chamber disposed in the housing and communicating with the first dirt inlet;

    a first brushroll disposed in the first brushroll chamber;

    a first motor disposed in the housing for driving the first brushroll;

    a power drive assembly mounted in the housing for propelling the appliance, the power drive assembly including a first tread assembly disposed on a first side of the housing, and a first drive motor operatively connected to the first tread assembly;

    a control device for regulating the operation of the first motor and the power drive assembly in an autonomous manner;

    a bumper mounted to the housing; and

    a bumper plate contacting the housing, the bumper plate being attached to the bumper such that at least a portion of the housing is sandwiched between the bumper plate and the bumper.

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