Robotic vacuum cleaning system

  • US 8,955,192 B2
  • Filed: 06/12/2014
  • Issued: 02/17/2015
  • Est. Priority Date: 04/29/2011
  • Status: Active Grant
First Claim
Patent Images

1. A resilient compressible roller for rotatable engagement with an autonomous coverage robot, the roller comprising:

  • a resilient flexible tube having inner and outer surfaces and defining a longitudinal axis;

    a hub disposed within the tube along the longitudinal axis;

    a rigid drive shaft supporting the hub and rotatably attachable to the robot;

    resilient spokes extending between the inner surface of the tube and the hub, the spokes suspending the tube to float about the hub and transferring torque from the drive shaft to the tube, a trace length of each spoke being longer than a radial distance between the drive shaft and the inner surface of the tube, allowing the tube to momentarily deform or move offset from the drive shaft during impact with debris, wherein the tube and the spokes are elastically deformable, collapsing from an undeformed shape toward the longitudinal axis to a deformed shaped and elastically rebounding back to the undeformed shape; and

    at least one vane extending outwardly from the outer surface of the tube.

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