Autonomous floor cleaning robot

  • US 7,636,982 B2
  • Filed: 08/10/2007
  • Issued: 12/29/2009
  • Est. Priority Date: 01/03/2002
  • Status: Active Grant
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First Claim
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1. A floor-cleaning robot, comprising:

  • a housing including a chassis, wherein part of the chassis is configured as a deck;

    a powered differential wheel drive operative to propel the floor-cleaning robot for cleaning operations;

    a control module operative to control the floor-cleaning robot to effect the cleaning operations;

    a cleaning head including a dual-stage brush assembly comprising first and second asymmetric brushes mounted in combination with the deck and powered by a cleaning motor to sweep up particulates during cleaning operations, the second brush having an outer diameter greater than an outer diameter of the first brush positioned to contact a hard floor surface and to direct debris forward towards the first brush, anda dust collection bin for collecting particulates swept up by the brush assembly;

    wherein the first brush is positioned to not contact the hard floor surface but to redirect debris from the second brush into the dust collection bin; and

    wherein the first and second asymmetric brushes are counter-rotating.

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