Robotic vacuum cleaner with side brush moving in spiral pattern

  • US 10,045,675 B2
  • Filed: 12/19/2013
  • Issued: 08/14/2018
  • Est. Priority Date: 12/19/2013
  • Status: Active Grant
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First Claim
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1. A robotic cleaning device comprising:

  • a main body;

    an opening arranged in a bottom side of the main body for removing debris from an area to be cleaned;

    a brush arranged adjacent to the opening;

    a propulsion system configured to move the robotic cleaning device across the area; and

    a positioning system comprising an obstacle detecting device configured to detect obstacles and a processing unit, the obstacle detecting device being configured to record positional data;

    wherein the processing unit is configured to;

    generate a cleaning pattern from the positional data, the cleaning pattern having a single spiral pattern,determine a number of double cleaning movements the single spiral pattern would cause,split up the single spiral pattern into a plurality of spiral patterns to minimize the number of double cleaning movements, each of the spiral patterns having an outer periphery and being arranged so that, during the cleaning, the robotic cleaning device spirals itself inwards from the outer periphery towards a centre of each of the spiral patterns, wherein the brush is arranged to face the outer periphery while the robotic cleaning device follows each of the spiral patterns.

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