Autonomous surface cleaning robot for wet cleaning

  • US 8,392,021 B2
  • Filed: 08/19/2005
  • Issued: 03/05/2013
  • Est. Priority Date: 02/18/2005
  • Status: Active Grant
  • ×
    • Pin Icon | RPX Insight
    • Pin
First Claim
Patent Images

1. A surface cleaning apparatus comprising:

  • a chassis defined by a fore-aft axis and a perpendicular transverse axis for supporting cleaning elements thereon and for transporting the cleaning elements along a direction of the fore-aft axis over work surface supporting the surface cleaning apparatus, the cleaning elements disposed to clean across a cleaning width disposed generally orthogonal to the fore-aft axis with a left end and a right end defining opposing edges of the cleaning width; and

    a liquid applicator disposed on the chassis and comprising;

    a fluid supply container;

    a conduit in fluid communication with the fluid supply container;

    a first nozzle in fluid communication with the conduit and disposed on the chassis at the left end for ejecting cleaning fluid therefrom, the cleaning fluid being ejected from the first nozzle and onto the work surface; and

    a second nozzle in fluid communication with the conduit and disposed on the chassis at the right end for ejecting cleaning fluid therefrom, the cleaning fluid being ejected from the second nozzle and onto the work surface,wherein the first nozzle and the second nozzle are co-located on the fore-aft axis;

    wherein each of the first and second nozzles ejects a burst of cleaning fluid in accordance with a burst frequency;

    a collecting apparatus attached to the chassis aft of the positions of the first and second nozzles and extending from the chassis to the surface across the cleaning width for colleting waste liquid from the surface; and

    an autonomous transport drive subsystem, a sensor module for sensing conditions and a power module all supported by the chassis and controlled by a master control module to autonomously move the cleaning elements substantially over the entire surface over the surface in accordance with predefined operating modes and in response to condition sensed by the sensor module,wherein the master control module is configured to vary the burst frequency in accordance with a desired rate for applying cleaning fluid onto surface.

View all claims