IP Library › Granted Patent US 8,782,848
Granted Patent B2
US 8,782,848 · App. 13/429,830 · Granted Jul 22, 2014

Autonomous surface cleaning robot for dry cleaning

Inventors: Andrew Ziegler (Arlington, MA); Christopher John Morse (Malden, MA); Duane L. Gilbert, Jr. (Goffstown, NH); Andrew Jones (Roslindale, MA)
Assignee: iRobot Corporation
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Quick Facts
Patent No.
US 8,782,848
App. No.
13/429,830
Granted
Jul 22, 2014
Kind
B2
Abstract

An autonomous floor cleaning robot includes a transport drive and control system arranged for autonomous movement of the robot over a floor for performing cleaning operations. The robot chassis carries a first cleaning zone comprising cleaning elements arranged to suction loose particulates up from the cleaning surface and a second cleaning zone comprising cleaning elements arraigned to apply a cleaning fluid onto the surface and to thereafter collect the cleaning fluid up from the surface after it has been used to clean the surface. The robot chassis carries a supply of cleaning fluid and a waste container for storing waste materials collected up from the cleaning surface.

Claims (26)

1. An autonomous cleaning robot comprising:

a chassis of the autonomous cleaning robot having a lower surface defining a channel open to a cleaning surface,

an air jet port and an air intake port disposed in the channel such that the air jet port is disposed along a first transverse edge of the chassis and the air intake port is spaced apart from the air jet port;

a drive system carried by the chassis and configured to maneuver the robot over a cleaning surface, the drive system comprising right and left driven wheels defining a transverse axis and configured to move the robot along an axis substantially perpendicular to the transverse axis;

a waste storage container carried by the chassis and in fluid communication with the air intake port;

an air moving system carried by the chassis, the air moving system configured to generate a negative pressure and a positive pressure, and the air moving system comprises conduits applying the positive pressure in a lateral direction at the air jet port to move loose particulates on the cleaning surface and applying the negative pressure at the air intake port to remove the moved particulates from the cleaning surface; and

a debris guiding strip disposed aft of the channel, the debris guiding strip configured to direct the loose particulates moved by air exiting the air jet port toward the air intake port and including a first portion disposed aft of the air jet port and a second portion disposed aft of the air intake port.

2. The autonomous cleaning robot of claim 1 , wherein the air intake port is aft of the air jet port.

3. The autonomous cleaning robot of claim 2 , wherein the right and left driven wheels are aft of the air intake port.

4. The autonomous cleaning robot of claim 1 , wherein the air intake port is disposed along a second transverse edge of the chassis, the second transverse edge of the chassis substantially opposite the first transverse edge of the chassis.

5. The autonomous cleaning robot of claim 1 , further comprising a rotatable brush in contact with the cleaning surface when the autonomous cleaning robot moves over the cleaning surface, and the rotatable brush in fluid communication with the waste storage container.

6. The autonomous cleaning robot of claim 1 , wherein the chassis is generally cylindrical with a diameter substantially parallel to the transverse axis and a height substantially perpendicular to the transverse axis.

7. The autonomous cleaning robot of claim 1 , further comprising a nose wheel carried by the chassis forward of the right and left drive wheels.

8. The autonomous cleaning robot of claim 7 , wherein the nose wheel is carried by the chassis forward of the air jet port.

9. The autonomous cleaning robot of claim 1 , wherein the air intake port is an elongate opening defining a cleaning width of the robot.

10. The autonomous cleaning robot of claim 1 , wherein the drive system is configured to transport the first transverse edge of the robot adjacent to a wall or obstacle encountered as the robot moves over the cleaning surface.

11. The autonomous cleaning robot of claim 1 , wherein the waste storage container is removably coupled to the chassis.

12. An autonomous cleaning robot comprising:

a chassis of the autonomous cleaning robot having a lower surface defining a channel;

an air jet port disposed in the channel along a transverse edge of the chassis;

a drive system carried by the chassis and configured to maneuver the robot over a cleaning surface, the drive system comprising right and left driven wheels defining a transverse axis and configured to transport the first transverse edge of the robot adjacent to a wall or obstacle encountered as the robot moves over the cleaning surface; and

an air moving system carried by the chassis, the air moving system configured to generate a positive pressure, and the air moving system comprises conduits applying the positive pressure in a lateral direction at the air jet port to move loose particulates on the cleaning surface, and

a debris guiding strip disposed aft of the channel, the debris guiding strip configured to direct loose particulates moved by air expelled from the air jet port toward another portion of the channel.

13. The autonomous cleaning robot of claim 12 , wherein the chassis further defines an air intake port apart from the air jet port and the air moving system is further configured to generate a negative pressure at the air intake port to remove the moved particulates from the cleaning surface.

14. The autonomous cleaning robot of claim 12 , further comprising a waste storage container carried by the chassis and in fluid communication with the air intake port.

15. The autonomous cleaning robot of claim 1 , wherein the second portion of the debris guiding strip is disposed aft of the first portion.

Assignments (5)
NOTICE OF ASSIGNMENT OF SECURITY INTEREST IN INTELLECTUAL PROPERTY Recorded Nov 25, 2025
From: TCG SENIOR FUNDING L.L.C., AS COLLATERAL AGENT
To: SANTRUM HONG KONG CO., LIMITED, AS SUCCESSOR COLLATERAL AGENT
Reel/Frame 073707/0516 →
SECURITY INTEREST Recorded Aug 9, 2023
From: IROBOT CORPORATION
To: TCG SENIOR FUNDING L.L.C., AS COLLATERAL AGENT
Reel/Frame 064532/0856 →
RELEASE OF SECURITY INTEREST Recorded Jul 31, 2023
From: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
To: IROBOT CORPORATION
Reel/Frame 064430/0001 →
SECURITY INTEREST Recorded Nov 3, 2022
From: IROBOT CORPORATION
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 061878/0097 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 25, 2012
From: ZIEGLER, ANDREW; MORSE, CHRISTOPHER JOHN; GILBERT, DUANE, JR.; JONES, ANDREW
To: IROBOT CORPORATION
Reel/Frame 028434/0123 →
Continuity (8)
Continuation 12836825 · Jul 15, 2010
Continuation 11835356 · Aug 7, 2007
Continuation 11207574 · Aug 19, 2005
Continuation In Part 11134212 · May 21, 2005
Continuation In Part 11134213 · May 21, 2005
Continuation In Part 11133796 · May 21, 2005
Provisional Application 60654838 · Feb 18, 2005
Related Publication 20120180254A1 · Jul 19, 2012