Autonomous surface cleaning robot for wet and dry cleaning

  • US 8,774,966 B2
  • Filed: 02/08/2011
  • Issued: 07/08/2014
  • 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 robot body having a forward and a rear end, and a fore-aft axis defined therebetween;

    right and left drive modules, each drive module comprisinga cup-shaped wheel having a substantially circular outer diameter,an annular tire having a substantially circular tire outer diameter and an inner diameter, the inner diameter fitting over the outer diameter of the cup-shaped wheel, and a tire thickness corresponding to the difference between the tire outer diameter and the outer diameter of the cup-shaped wheel; and

    a scrubbing element disposed along a cleaning width;

    wherein the right and left drive modules are disposed aft of the scrubbing element as the robot travels along the cleaning surface in a forward direction and the cleaning robot has a mass of less than about 10 kg, andthe ratio of the tire thickness and the outer diameter of the cup-shaped wheel is in a range of 0.04 to 0.14.

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