Autonomous surface cleaning robot for wet cleaning

  • US 8,985,127 B2
  • Filed: 10/02/2013
  • Issued: 03/24/2015
  • Est. Priority Date: 02/18/2005
  • Status: Active Grant
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First Claim
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1. A surface cleaning apparatus comprising:

  • a chassis defined by a fore-aft axis and a perpendicular transverse axis for carrying and transporting cleaning elements along a direction of the fore-aft axis over a work surface supporting the surface cleaning apparatus, the cleaning elements disposed to clean across a cleaning width generally orthogonal to the fore-aft axis;

    a scrubbing module carried by the chassis, the scrubbing module comprising a two-part housing having a lower housing element and a mating upper housing element, a smearing element and a rotatable scrubbing brush defining the cleaning width, with the smearing element and scrubbing brush supported by the two-part housing, and, wherein opening the two-part housing exposes one or more interior surfaces of the housing for cleaning; and

    a liquid applicator disposed on the chassis and comprising a pump arranged to dispense cleaning fluid from a fluid supply container;

    wherein the smearing element extends to reach the work surface across the cleaning width for smearing dispensed cleaning fluid along the work surface;

    wherein the scrubbing module is formed as a separate subsystem that is removable as a unit from the chassis; and

    wherein the rotatable scrubbing brush is removable mounted between the upper and lower housing elements in a longitudinal cavity, such that opening the two-part housing exposes the scrubbing brush for cleaning.

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