Autonomous surface cleaning robot for wet and dry cleaning

  • US 9,445,702 B2
  • Filed: 06/11/2014
  • Issued: 09/20/2016
  • Est. Priority Date: 02/18/2005
  • Status: Active Grant
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First Claim
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1. A surface treatment robot, comprising:

  • a differential drive system mounted on the robot and configured to maneuver the robot over a cleaning surface, the differential drive having at least two circulating drive members that drive the robot forward and steer the robot;

    a controller in communication with the differential drive system and configured to differentially steer the robot and to maneuver the robot to pivot in place;

    a robot body having a maximum width along a line perpendicular to a direction of forward travel and a side edge along the line of maximum width;

    a cleaning head forward of the circulating drive members in the direction of forward travel and extending substantially along the line of maximum width to the side edge;

    a driven scrubbing element extending to substantially within 1 cm of the side edge along the line of maximum width; and

    a cleaning width defined by the driven scrubbing element with reference to a total robot mass, the cleaning width being more than or equal to three centimeters of cleaning width per kilogram of total robot mass.

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