Patents by Inventor Fangzheng Guo
Fangzheng Guo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240122423Abstract: An autonomous mobile cleaning robot can include a cleaning assembly and a drive wheel. The cleaning assembly can be configured to lift debris from a surface and direct the debris into a dustpan. The drive wheel can be configured to move the autonomous mobile cleaning robot on the surface. The drive wheel can include a first set of treads configured to climb an obstacle, a second set of treads configured to maintain continuous contact with a surface of a floor, and third set of treads configured to direct water underneath the third set of treads towards a center of the autonomous mobile cleaning robot.Type: ApplicationFiled: October 17, 2022Publication date: April 18, 2024Inventor: Fangzheng Guo
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Patent number: 11930989Abstract: A roller assembly for a mobile cleaning system for cleaning a work surface can include a drive shaft, a sheath, a bushing, and a bushing shroud. The drive shaft can be rotatable about a drive axis, and the drive shaft can include a driven end and an opposite bushing end. The sheath can be supported by the drive shaft and the sheath can be rotatable with the drive shaft. The sheath can include a shell engageable with the work surface. The bushing can be located about the bushing end of the drive shaft. The bushing shroud can be connected to the bushing. The sheath and the drive shaft can be together rotatable with respect to the bushing and the bushing shroud, the bushing shroud can include an outer portion defining a first radius of curvature and a recessed portion connected to the outer portion.Type: GrantFiled: May 30, 2023Date of Patent: March 19, 2024Assignee: iRobot CorporationInventors: Hao-Yun Chow, Patrick Chow, Ke Ting Gao, Fangzheng Guo, Jennifer Ann Mauger, Rogelio Manfred Neumann, Jian Yun Pi, Michael G. Sack, Rubal Verma
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Patent number: 11857139Abstract: A mobile cleaning robot can include a body, a drive wheel, and a wheel stop. The drive wheel can be connected to the body and can be operable to move the mobile cleaning robot about an environment. The wheel stop can be movable with respect to the body and the drive wheel between a stop position and a release position. The wheel stop can be engageable with the drive wheel in the stop position to limit vertical travel of the drive wheel with respect to the body.Type: GrantFiled: July 29, 2021Date of Patent: January 2, 2024Assignee: iRobot CorporationInventors: Timothy R. Ohm, Erik Edward Steltz, Russell Walter Morin, Fangzheng Guo
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Publication number: 20230346182Abstract: A mobile cleaning robot can include a body, a drive wheel, and a wheel stop. The drive wheel can be connected to the body and can be operable to move the mobile cleaning robot about an environment. The wheel stop can be movable with respect to the body and the drive wheel between a stop position and a release position. The wheel stop can be engageable with the drive wheel in the stop position to limit vertical travel of the drive wheel with respect to the body.Type: ApplicationFiled: June 30, 2023Publication date: November 2, 2023Inventors: Timothy R. Ohm, Erik Edward Steltz, Russell Walter Morin, Fangzheng Guo
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Publication number: 20230346181Abstract: A mobile cleaning robot can be movable within an environment. The mobile cleaning robot can include a body, a cleaning head, a biasing element, and a linkage. The cleaning head can be operable to extract debris from a floor surface and can be configured to move vertically relative to the body between an extended position and a retracted position. The biasing element can be connected to the body and can be movable with the cleaning head. The linkage can be connected to the cleaning head and the biasing element. The linkage can be rotatably connected to the body to, together with the biasing element, bias the cleaning head toward the retracted position.Type: ApplicationFiled: April 29, 2022Publication date: November 2, 2023Inventors: Timothy R. Ohm, David O. Swett, Fangzheng Guo
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Publication number: 20230301477Abstract: A roller assembly for a mobile cleaning system for cleaning a work surface can include a drive shaft, a sheath, a bushing, and a bushing shroud. The drive shaft can be rotatable about a drive axis, and the drive shaft can include a driven end and an opposite bushing end. The sheath can be supported by the drive shaft and the sheath can be rotatable with the drive shaft. The sheath can include a shell engageable with the work surface. The bushing can be located about the bushing end of the drive shaft. The bushing shroud can be connected to the bushing. The sheath and the drive shaft can be together rotatable with respect to the bushing and the bushing shroud, the bushing shroud can include an outer portion defining a first radius of curvature and a recessed portion connected to the outer portion.Type: ApplicationFiled: May 30, 2023Publication date: September 28, 2023Inventors: Hao-Yun Chow, Patrick Chow, Ke Ting Gao, Fangzheng Guo, Jennifer Ann Mauger, Rogelio Manfred Neumann, Jian Yun PI, Michael G. Sack, Rubal Verma
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Patent number: 11678780Abstract: A roller assembly for a mobile cleaning system for cleaning a work surface can include a drive shaft, a sheath, a bushing, and a bushing shroud. The drive shaft can be rotatable about a drive axis, and the drive shaft can include a driven end and an opposite bushing end. The sheath can be supported by the drive shaft and the sheath can be rotatable with the drive shaft. The sheath can include a shell engageable with the work surface. The bushing can be located about the bushing end of the drive shaft. The bushing shroud can be connected to the bushing. The sheath and the drive shaft can be together rotatable with respect to the bushing and the bushing shroud, the bushing shroud can include an outer portion defining a first radius of curvature and a recessed portion connected to the outer portion.Type: GrantFiled: June 22, 2022Date of Patent: June 20, 2023Assignee: iRobot CorporationInventors: Hao-Yun Chow, Patrick Chow, Ke Ting Gao, Fangzheng Guo, Jennifer Ann Mauger, Rogelio Manfred Neumann, Jian Yun Pi, Michael G. Sack, Rubal Verma
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Publication number: 20230032691Abstract: A mobile cleaning robot can include a body, a drive wheel, and a wheel stop. The drive wheel can be connected to the body and can be operable to move the mobile cleaning robot about an environment. The wheel stop can be movable with respect to the body and the drive wheel between a stop position and a release position. The wheel stop can be engageable with the drive wheel in the stop position to limit vertical travel of the drive wheel with respect to the body.Type: ApplicationFiled: July 29, 2021Publication date: February 2, 2023Inventors: Timothy R. Ohm, Erik Edward Steltz, Russell Walter Morin, Fangzheng Guo
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Publication number: 20220313037Abstract: A roller assembly for a mobile cleaning system for cleaning a work surface can include a drive shaft, a sheath, a bushing, and a bushing shroud. The drive shaft can be rotatable about a drive axis, and the drive shaft can include a driven end and an opposite bushing end. The sheath can be supported by the drive shaft and the sheath can be rotatable with the drive shaft. The sheath can include a shell engageable with the work surface. The bushing can be located about the bushing end of the drive shaft. The bushing shroud can be connected to the bushing. The sheath and the drive shaft can be together rotatable with respect to the bushing and the bushing shroud, the bushing shroud can include an outer portion defining a first radius of curvature and a recessed portion connected to the outer portion.Type: ApplicationFiled: June 22, 2022Publication date: October 6, 2022Inventors: Hao-Yun Chow, Patrick Chow, Ke Ting Gao, Fangzheng Guo, Jennifer Ann Mauger, Rogelio Manfred Neumann, Jian Yun Pi, Michael G. Sack, Rubal Verma
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Patent number: 11369242Abstract: A roller assembly for a mobile cleaning system for cleaning a work surface can include a drive shaft, a sheath, a bushing, and a bushing shroud. The drive shaft can be rotatable about a drive axis, and the drive shaft can include a driven end and an opposite bushing end. The sheath can be supported by the drive shaft and the sheath can be rotatable with the drive shaft. The sheath can include a shell engageable with the work surface. The bushing can be located about the bushing end of the drive shaft. The bushing shroud can be connected to the bushing. The sheath and the drive shaft can be together rotatable with respect to the bushing and the bushing shroud, the bushing shroud can include an outer portion defining a first radius of curvature and a recessed portion connected to the outer portion.Type: GrantFiled: May 11, 2020Date of Patent: June 28, 2022Assignee: iRobot CorporationInventors: Hao-Yun Chow, Patrick Chow, Ke Ting Gao, Fangzheng Guo, Jennifer Ann Mauger, Rogelio Manfred Neumann, Jian Yun Pi, Michael G. Sack, Rubal Verma
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Publication number: 20220104677Abstract: A mobile cleaning robot can include a body, a pad assembly, and a pad drive system. The pad assembly can be connected to the body and can be movable relative thereto. The pad drive system can be connected to the body and can be operable to move the pad assembly relative to the body between a stored position and a cleaning position.Type: ApplicationFiled: July 29, 2021Publication date: April 7, 2022Inventors: Michael G. Sack, Erik Edward Steltz, Russell Walter Morin, Victor Puksta, Timothy R. Ohm, Brian Cleve Benson, JR., Peter J. Lydon, Timothy James Haughton, Fangzheng Guo
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Publication number: 20200352402Abstract: A roller assembly for a mobile cleaning system for cleaning a work surface can include a drive shaft, a sheath, a bushing, and a bushing shroud. The drive shaft can be rotatable about a drive axis, and the drive shaft can include a driven end and an opposite bushing end. The sheath can be supported by the drive shaft and the sheath can be rotatable with the drive shaft. The sheath can include a shell engageable with the work surface. The bushing can be located about the bushing end of the drive shaft. The bushing shroud can be connected to the bushing. The sheath and the drive shaft can be together rotatable with respect to the bushing and the bushing shroud, the bushing shroud can include an outer portion defining a first radius of curvature and a recessed portion connected to the outer portion.Type: ApplicationFiled: May 11, 2020Publication date: November 12, 2020Inventors: Hao-Yun Chow, Patrick Chow, Ke Ting Gao, Fangzheng Guo, Jennifer Ann Mauger, Rogelio Manfred Neumann, Jian Yun Pi, Michael G. Sack, Rubal Verma
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Patent number: 10744650Abstract: A mobile robot includes a recessed well in a top surface of the mobile robot, at least one capacitive sensor underlying the recessed well and having a first region and a second region, one or more mobility sensors, and a controller coupled to the at least one capacitive sensor and the one or more mobility sensors. The controller is configured to determine an operating status of the mobile robot responsive to output signals from the one or more mobility sensors, and selectively disregard an input at a first portion of the recessed well corresponding to the first region of the at least one capacitive sensor based on the operating status of the mobile robot.Type: GrantFiled: September 4, 2018Date of Patent: August 18, 2020Assignee: iRobot CorporationInventors: Rogelio Manfred Neumann, Landon Unninayar, Fangzheng Guo, Qingtai Zhai, John P. O'Brien, Benjamin H. Schriesheim, Travis Gschrey, Milan Modh
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Publication number: 20200070355Abstract: A mobile robot includes a recessed well in a top surface of the mobile robot, at least one capacitive sensor underlying the recessed well and having a first region and a second region, one or more mobility sensors, and a controller coupled to the at least one capacitive sensor and the one or more mobility sensors. The controller is configured to determine an operating status of the mobile robot responsive to output signals from the one or more mobility sensors, and selectively disregard an input at a first portion of the recessed well corresponding to the first region of the at least one capacitive sensor based on the operating status of the mobile robot.Type: ApplicationFiled: September 4, 2018Publication date: March 5, 2020Inventors: Rogelio Manfred Neumann, Landon Unninayar, Fangzheng Guo, Qingtai Zhai, John P. O'Brien, Benjamin H. Schriesheim, Travis Gschrey, Milan Modh