US 11,930,989 B2
Reducing cleaning roller amplitude and speed oscillations of a cleaning robot
Hao-Yun Chow, Kaohsiung (TW); Patrick Chow, Santa Clarita, CA (US); Ke Ting Gao, Shenzhen (CN); Fangzheng Guo, Arlington, MA (US); Jennifer Ann Mauger, Arlington, MA (US); Rogelio Manfred Neumann, Somerville, MA (US); Jian Yun Pi, GaoAn (CN); Michael G. Sack, Westford, MA (US); and Rubal Verma, Lowell, MA (US)
Assigned to iRobot Corporation, Bedford, MA (US)
Filed by iRobot Corporation, Bedford, MA (US)
Filed on May 30, 2023, as Appl. No. 18/203,153.
Application 18/203,153 is a continuation of application No. 17/846,484, filed on Jun. 22, 2022, granted, now 11,678,780.
Application 17/846,484 is a continuation of application No. 16/871,149, filed on May 11, 2020, granted, now 11,369,242.
Claims priority of provisional application 62/846,091, filed on May 10, 2019.
Prior Publication US 2023/0301477 A1, Sep. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A46B 13/02 (2006.01); A46B 13/00 (2006.01); A47L 9/04 (2006.01)
CPC A47L 9/0455 (2013.01) [A46B 13/001 (2013.01); A46B 13/02 (2013.01); A47L 9/0477 (2013.01); A46B 2200/30 (2013.01); A47L 2201/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A roller assembly for a mobile cleaning system, the roller assembly comprising:
a drive shaft rotatable about a drive axis, the drive shaft including a driven end and bushing end;
a sheath supported by the drive shaft and rotatable therewith to engage a floor surface, the sheath comprising:
a shell extending longitudinally along the drive axis and rotatable about the drive axis; and
a plurality of vanes circumferentially spaced around the shell, each vane of the plurality of vanes extending radially outward from the shell and configured to engage the floor surface; and
a plurality of spokes connected to the drive shaft and connected to the sheath between two of the vanes.