Autonomous coverage robots

  • US 9,320,398 B2
  • Filed: 08/13/2009
  • Issued: 04/26/2016
  • Est. Priority Date: 12/02/2005
  • Status: Active Grant
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First Claim
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1. An autonomous coverage robot comprising:

  • a body;

    a drive system disposed on the body and configured to maneuver the robot; and

    a cleaning assembly disposed on the body and configured to engage a floor surface while the robot is maneuvered across the floor surface, the cleaning assembly comprising;

    a driven cleaning roller defining a rotational center about which the cleaning roller is configured to rotate;

    a cleaning bin disposed on the body for receiving debris agitated by the cleaning roller, the cleaning bin comprising;

    a cleaning bin body having a cleaning bin entrance disposed adjacent to the cleaning roller, the cleaning bin body having a holding portion in pneumatic communication with the cleaning bin entrance for receiving debris; and

    a roller scraper disposed on the cleaning bin body for engaging the cleaning roller, the roller scraper being positioned such that, during operation of the robot, the roller scraper engages a downwardly rotating portion of the cleaning roller; and

    an air mover operable to move air into the cleaning bin entrance;

    wherein the roller scraper is disposed at a lower edge of the cleaning bin entrance during the operation of the robot and arranged to engage the cleaning roller above its rotational center, the lower edge being substantially linear, substantially parallel to the cleaning roller, and of a length sufficient to substantially span the cleaning roller.

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