US 11,678,780 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 Jun. 22, 2022, as Appl. No. 17/846,484.
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 2022/0313037 A1, Oct. 6, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A46B 13/02 (2006.01); A47L 9/04 (2006.01); A46B 13/00 (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 portion and bushing portion;
a sheath supported by the drive shaft and rotatable therewith to engage a worb surface;
a bushing connected to the bushing portion of the drive shaft;
a bushing support supporting the bushing; and
a shroud extension connected to the bushing portion of the shaft, the shroud extension extending longitudinally at least partially encompassed by the sheath, and the shroud extension at least partially surrounding the bushing support.