Patents by Inventor Donald Joseph Legatt
Donald Joseph Legatt 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: 20220313046Abstract: A method of controlling a robotic floor cleaning machine includes driving, by an operator, the robotic floor cleaning machine along a transport path and a cleaning path. The transport path defines a path for transport of the robotic floor cleaning machine without active cleaning and the cleaning path defines a path for a cleaning operation. The method further includes recording the transport path and the cleaning path driven by the operator; defining, in a controller of the robotic floor cleaning machine, a route comprising the recorded transport path and the recorded cleaning path, and defining the cleaning operation. The robotic floor cleaning machine executes the defined route and the cleaning operation.Type: ApplicationFiled: June 16, 2022Publication date: October 6, 2022Inventors: Stephen Klopp, Stuart McDonald, Kipp Knutson, David Wood, Andrew Graham, Christian Kraft, Donald Joseph Legatt
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Publication number: 20220313047Abstract: A method of controlling a robotic floor cleaning machine includes driving, by an operator, the robotic floor cleaning machine along a transport path and a cleaning path. The transport path defines a path for transport of the robotic floor cleaning machine without active cleaning and the cleaning path defines a path for a cleaning operation. The method further includes recording the transport path and the cleaning path driven by the operator; defining, in a controller of the robotic floor cleaning machine, a route comprising the recorded transport path and the recorded cleaning path, and defining the cleaning operation. The robotic floor cleaning machine executes the defined route and the cleaning operation.Type: ApplicationFiled: June 16, 2022Publication date: October 6, 2022Inventors: Kipp Knutson, David Wood, Andrew Graham, Christian Kraft, Donald Joseph Legatt
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Patent number: 11432698Abstract: A control system for a robotic floor cleaning machine configured to perform a cleaning operation along a cleaning path can comprise a controller, and a plurality of sensors. The controller can be configured to control autonomous movement of the robotic floor cleaning machine along the cleaning path and autonomous performance of the cleaning operation. The plurality of sensors can be configured to sense a location of the robotic floor cleaning machine relative to surroundings of the robotic floor cleaning machine. At least two sensors from the plurality of sensors are configured to locate the robotic floor cleaning machine in overlapping areas of the surroundings.Type: GrantFiled: May 28, 2020Date of Patent: September 6, 2022Assignee: Nilfisk A/SInventors: Kipp Knutson, Stuart McDonald, Stephen Klopp, John Black, Dave Wood, Donald Joseph Legatt
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Patent number: 11399686Abstract: A control system for a robotic floor cleaning machine configured to perform a cleaning operation along a cleaning path can comprise a controller, and a plurality of sensors. The controller can be configured to control autonomous movement of the robotic floor cleaning machine along the cleaning path and autonomous performance of the cleaning operation. The plurality of sensors can be configured to sense a location of the robotic floor cleaning machine relative to surroundings of the robotic floor cleaning machine. At least two sensors from the plurality of sensors are configured to locate the robotic floor cleaning machine in overlapping areas of the surroundings.Type: GrantFiled: May 28, 2020Date of Patent: August 2, 2022Assignee: Nilfisk A/SInventors: Kipp Knutson, Stuart McDonald, Stephen Klopp, John Black, Dave Wood, Donald Joseph Legatt
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Patent number: 11083357Abstract: A floor cleaning machine can comprise a chassis, a cleaning mechanism, a control system, and a cleaning operation sensing system connected to the chassis. The chassis can be configured for movement along a cleaning path. The cleaning mechanism can perform a cleaning operation. The liquid system can provide liquid to the cleaning mechanism. The recovery system can recover liquid from the cleaning operation. The control system can control performance of the cleaning operation. The cleaning operation sensing system can detect a condition of the cleaning operation. The cleaning operation sensing system can comprise a water trailing detection system comprising: a frame connected to the chassis aft of the recovery system; an absorbent medium connected to the frame; and a moisture sensor in communication with the control system to alter a signal in response to moisture in the absorbent medium.Type: GrantFiled: June 12, 2018Date of Patent: August 10, 2021Assignee: Nilfisk A/SInventors: Kipp Knutson, Stuart McDonald, Stephen Klopp, John Black, Dave Wood, Donald Joseph Legatt
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Publication number: 20200288936Abstract: A control system for a robotic floor cleaning machine configured to perform a cleaning operation along a cleaning path can comprise a controller, and a plurality of sensors. The controller can be configured to control autonomous movement of the robotic floor cleaning machine along the cleaning path and autonomous performance of the cleaning operation. The plurality of sensors can be configured to sense a location of the robotic floor cleaning machine relative to surroundings of the robotic floor cleaning machine. At least two sensors from the plurality of sensors are configured to locate the robotic floor cleaning machine in overlapping areas of the surroundings.Type: ApplicationFiled: May 28, 2020Publication date: September 17, 2020Inventors: Kipp Knutson, Stuart McDonald, Stephen Klopp, John Black, Dave Wood, Donald Joseph Legatt
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Publication number: 20190014965Abstract: A floor cleaning machine can comprise a chassis, a cleaning mechanism, a control system, and a cleaning operation sensing system connected to the chassis. The chassis can be configured for movement along a cleaning path. The cleaning mechanism can perform a cleaning operation. The liquid system can provide liquid to the cleaning mechanism. The recovery system can recover liquid from the cleaning operation. The control system can control performance of the cleaning operation. The cleaning operation sensing system can detect a condition of the cleaning operation. The cleaning operation sensing system can comprise a water trailing detection system comprising: a frame connected to the chassis aft of the recovery system; an absorbent medium connected to the frame; and a moisture sensor in communication with the control system to alter a signal in response to moisture in the absorbent medium.Type: ApplicationFiled: June 12, 2018Publication date: January 17, 2019Inventors: Kipp Knutson, Stuart McDonald, Stephen Klopp, John Black, David Wood, Donald Joseph Legatt
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Patent number: 10010231Abstract: A floor cleaning machine can comprise a chassis, a cleaning mechanism, a control system, and a cleaning operation sensing system connected to the chassis. The chassis can be configured for movement along a cleaning path. The cleaning mechanism can perform a cleaning operation. The liquid system can provide liquid to the cleaning mechanism. The recovery system can recover liquid from the cleaning operation. The control system can control performance of the cleaning operation. The cleaning operation sensing system can detect a condition of the cleaning operation. The cleaning operation sensing system can comprise a water trailing detection system comprising: a frame connected to the chassis aft of the recovery system, an absorbent medium connected to the frame; and a moisture sensor in communication with the control system to alter a signal in response to moisture in the absorbent medium.Type: GrantFiled: August 18, 2016Date of Patent: July 3, 2018Assignee: NILFISK A/SInventors: Kipp Knutson, Stuart McDonald, Stephen Klopp, John Black, Dave Wood, Donald Joseph Legatt
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Patent number: 9700191Abstract: A floor treating apparatus comprises a chassis, a cleaning head assembly and a wheel lift assembly. The chassis has a wheel assembly and a handle assembly. The cleaning head assembly comprises a motor mounting plate that is suspended from the chassis at pivot points. The wheel lift assembly comprises a cam mounted between the chassis and the motor mounting plate, and a lever for rotating the cam to tilt the motor mounting plate on the pivot points.Type: GrantFiled: April 13, 2015Date of Patent: July 11, 2017Assignee: NILFISK, INC.Inventors: Donald Joseph Legatt, William Randall Stuchlik, Robert D. Abrams
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Patent number: 9649003Abstract: A random orbit scrubber comprises a main body having a front end and a rear end, a squeegee assembly coupled to the rear end of the main body, and a cleaning head assembly coupled to the front end of the main body. The cleaning head assembly can include a cleaning element structured for contact with a floor surface. The cleaning head assembly can further include a motor that is operable to impart rotational and orbital movement on the cleaning element.Type: GrantFiled: February 16, 2015Date of Patent: May 16, 2017Assignee: Nilfisk, Inc.Inventors: William Randall Stuchlik, Donald Joseph Legatt
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Publication number: 20170049288Abstract: A control system for a robotic floor cleaning machine configured to perform a cleaning operation along a cleaning path can comprise a controller, and a plurality of sensors. The controller can be configured to control autonomous movement of the robotic floor cleaning machine along the cleaning path and autonomous performance of the cleaning operation. The plurality of sensors can be configured to sense a location of the robotic floor cleaning machine relative to surroundings of the robotic floor cleaning machine. At least two sensors from the plurality of sensors are configured to locate the robotic floor cleaning machine in overlapping areas of the surroundings.Type: ApplicationFiled: August 18, 2016Publication date: February 23, 2017Inventors: Kipp Knutson, Stuart McDonald, Stephen Klopp, John Black, Dave Wood, Donald Joseph Legatt
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Publication number: 20170049287Abstract: A floor cleaning machine can comprise a chassis, a cleaning mechanism, a control system, and a cleaning operation sensing system connected to the chassis. The chassis can be configured for movement along a cleaning path. The cleaning mechanism can perform a cleaning operation. The liquid system can provide liquid to the cleaning mechanism. The recovery system can recover liquid from the cleaning operation. The control system can control performance of the cleaning operation. The cleaning operation sensing system can detect a condition of the cleaning operation. The cleaning operation sensing system can comprise a water trailing detection system comprising: a frame connected to the chassis aft of the recovery system, an absorbent medium connected to the frame; and a moisture sensor in communication with the control system to alter a signal in response to moisture in the absorbent medium.Type: ApplicationFiled: August 18, 2016Publication date: February 23, 2017Inventors: Kipp Knutson, Stuart McDonald, Stephen Klopp, John Black, Dave Wood, Donald Joseph Legatt
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Publication number: 20160296093Abstract: A floor treating apparatus comprises a chassis, a cleaning head assembly and a wheel lift assembly. The chassis has a wheel assembly and a handle assembly. The cleaning head assembly comprises a motor mounting plate that is suspended from the chassis at pivot points. The wheel lift assembly comprises a cam mounted between the chassis and the motor mounting plate, and a lever for rotating the cam to tilt the motor mounting plate on the pivot points.Type: ApplicationFiled: April 13, 2015Publication date: October 13, 2016Inventors: Donald Joseph Legatt, William Randall Stuchlik
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Publication number: 20150157181Abstract: A random orbit scrubber comprises a main body having a front end and a rear end, a squeegee assembly coupled to the rear end of the main body, and a cleaning head assembly coupled to the front end of the main body. The cleaning head assembly can include a cleaning element structured for contact with a floor surface. The cleaning head assembly can further include a motor that is operable to impart rotational and orbital movement on the cleaning element.Type: ApplicationFiled: February 16, 2015Publication date: June 11, 2015Inventors: William Randall Stuchlik, Donald Joseph Legatt
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Patent number: 8984696Abstract: A random orbit scrubber comprises a main body having a front end and a rear end, a squeegee assembly coupled to the rear end of the main body, and a cleaning head assembly coupled to the front end of the main body. The cleaning head assembly can include a cleaning element structured for contact with a floor surface. The cleaning head assembly can further include a motor that is operable to impart rotational and orbital movement on the cleaning element.Type: GrantFiled: November 8, 2011Date of Patent: March 24, 2015Assignee: Nilfisk-Advance, Inc.Inventors: William Randall Stuchlik, Donald Joseph Legatt
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Publication number: 20120118319Abstract: A random orbit scrubber comprises a main body having a front end and a rear end, a squeegee assembly coupled to the rear end of the main body, and a cleaning head assembly coupled to the front end of the main body. The cleaning head assembly can include a cleaning element structured for contact with a floor surface. The cleaning head assembly can further include a motor that is operable to impart rotational and orbital movement on the cleaning element.Type: ApplicationFiled: November 8, 2011Publication date: May 17, 2012Inventors: William Randall Stuchlik, Donald Joseph Legatt
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Publication number: 20100205766Abstract: A floor cleaning machine (100) utilizing a vacuum device (10) includes a tank (20) having an inlet (22) through which dirt, debris, or soiled solution is pulled along with air into the tank (20). The tank (20) further includes first and second air outlets (24, 30) both in communication with the tank (20). Air in the tank (20) is drawable out through the first air outlet (24) and selectively drawable out through the second air outlet (30). A check valve (40) is mounted in the second air outlet (30) preventing airflow from the second air outlet (30) to the tank (20). The check valve (40) allows the air in the tank (20) to be drawn out through the second air outlet (30) when more vacuum power is needed. The check valve (40) prevents airflow from the second air outlet (30) to the tank (20) when air is not being drawn out of the second air outlet (30) and while air in the tank (20) is being drawn out through the first air outlet (24) when less vacuum power is needed.Type: ApplicationFiled: November 10, 2008Publication date: August 19, 2010Applicant: NILFISK-ADVANCE INC.Inventors: Donald Joseph Legatt, Dexter Lehman
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Publication number: 20080276414Abstract: Leading and trailing cylindrical brushes (14) are moved in an operation direction to sweep and wet scrub a floor In differing aspects, the trailing cylindrical brush (14) is rotated at a greater rotational speed than the leading cylindrical brush (14) to enhance sweeping ability and preferably in the order of 1500 RPMs to enhance polishing. The brushes (14) include spiraled, equally circumferentially spaced rows (R) of a multiplicity of equally spaced tufts (54). The tufts (54) of an adjacent trailing row (R) are indexed laterally from a leading row (R) by an index distance (T) less than one half of the distance (I) of the tufts (54) in the rows (R).Type: ApplicationFiled: October 18, 2006Publication date: November 13, 2008Applicant: NILFISK-ADVANCE, INC.Inventors: David W. Wood, Donald Joseph Legatt, Nick Graupe
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Patent number: 7254867Abstract: A squeegee assembly (60) includes first and second protrusions (314) interconnected to a support (172) to which front and rear flexible blades (170a, 170b) are mounted. In preferred aspects, squeegee assembly (60) is of a curved design such that the flexible blades (170a, 170b) are spaced at the center of the support (172) where a suction tube (174) is provided and taper towards each other so that their ends are closely adjacent each other. The first and second protrusions (314) define upper and lower channel portions (324, 326) between the flexible blades (170a, 170b) so that appreciable reduction in the speed of air flow towards the suction tube (174) does not occur, which reduction may result in dropping of carried moisture.Type: GrantFiled: March 8, 2004Date of Patent: August 14, 2007Assignee: Nilfisk-Advance, Inc.Inventors: Donald Joseph Legatt, Nick Graupe, Charles A. Cazett
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Patent number: 6530821Abstract: A riding burnishing machine (10) includes a battery pack positioned as low as possible in the chassis (12) between the front and rear wheels (14, 15) and removable in a horizontal movement direction while supported by the bottom by a pallet jack. A steering system includes steering shafts (58, 76) which are rotatable together while allowing relative pivotable movement therebetween and which are rotatably connected to the spindle (38) of the steerable rear wheels (15) through a jack shaft (44). The burnishing head is raised and lowered relative to the floor surface by an electric actuator (104) which pivots a linkage (92) through a connection allowing floating travel. The pressure which the treating member (16) engages the floor surface is controlled in response to the current level of the electric motor (86) which rotates the treating member (16).Type: GrantFiled: May 7, 2001Date of Patent: March 11, 2003Assignee: Nilfisk-Advance, Inc.Inventors: Donald Joseph Legatt, Kipp W. Knutson