Patents by Inventor Charles W. Dawson
Charles W. Dawson 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: 20230009701Abstract: An automated mobile sprayer (AMS) (10) applies fluid sprays to a target surface. The AMS can operate according to a wall-follow routine, where the AMS maintains a spacing and orientation relative to the target surface and shifts a set distance between each spray pass. The AMS is also operable in an overlap adjustment mode where a control module (24) of the AMS actively determines the distance that AMS shifts between each spray pass such that AMS applies the final orthogonal spray on the target surface at an end point of the target surface.Type: ApplicationFiled: December 4, 2020Publication date: January 12, 2023Inventors: Charles W. Dawson, John P. Saunders, Dale C. Pemberton
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Publication number: 20230009566Abstract: An automated mobile sprayer (AMS) (12) is configured to apply stripes of fluid to target surfaces to coat those target surfaces with the fluid. A control module (24) of the AMS (12) controls movement and spraying by the AMS. The control module (24) causes the AMS (12) to follow a target surface based on distance data from distance sensors configured to detect the target surface.Type: ApplicationFiled: December 4, 2020Publication date: January 12, 2023Inventors: Charles W. Dawson, Barry W. Mattson, Nicholas H. Reath, Dale C. Pemberton, John P. Saunders, Andrew V. Lindenfelser
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Patent number: 11441551Abstract: A portable hydraulic power unit includes a frame, a fluid tank supported by the frame, and a manifold supported by the frame. The fluid tank is configured to store a supply of hydraulic fluid for powering a hydraulically-driven tool. A reciprocating pump is mounted on the exterior of the fluid tank and on the exterior of the manifold. The reciprocating pump is secured to the fluid tank and the manifold with fasteners extending through a cylinder body of the reciprocating pump.Type: GrantFiled: April 27, 2018Date of Patent: September 13, 2022Assignee: Graco Minnesota Inc.Inventors: Charles W. Dawson, Mariusz J. Luczak, Barry W. Mattson, Douglas S. Ryder, Bret A. Deneson, Christopher A. Lins
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Patent number: 11162482Abstract: A portable hydraulic power unit includes a frame, a fluid tank supported by the frame, and a manifold supported by the frame. The fluid tank is configured to store a supply of hydraulic fluid for powering a hydraulically-driven tool. A reciprocating pump is mounted on the exterior of the fluid tank and on the exterior of the manifold. The reciprocating pump is secured to the fluid tank and the manifold with fasteners extending through a cylinder body of the reciprocating pump.Type: GrantFiled: April 27, 2018Date of Patent: November 2, 2021Assignee: Graco Minnesota Inc.Inventors: Charles W. Dawson, Mariusz J. Luczak, Barry W. Mattson, Douglas S. Ryder, Bret A. Deneson, Christopher A. Lins
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Publication number: 20210291208Abstract: Various embodiments concern a handheld paint sprayer for spraying a paint. The sprayer can comprise a shell body comprising a door that, when opened, exposes an opening into an interior of the shell body, the door configured to close over the opening. The sprayer can further comprise a trigger connected to a handle, a motor in the interior, and a paint reservoir connected to the shell body. The sprayer can further comprise a nozzle in fluid communication with the reservoir and a pump located in the interior of the shell body. The pump is operated by the motor, the pump configured to pump the paint from the reservoir out of the nozzle as a spray. The pump is removable from the interior of the shell body through the opening when the door is opened but is not removable through the opening when the door is closed.Type: ApplicationFiled: May 17, 2021Publication date: September 23, 2021Inventors: Charles W. Dawson, Diane L. Olson, Pamela J. Muetzel
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Patent number: 11007545Abstract: Various embodiments concern a handheld paint sprayer for spraying a paint. The sprayer can comprise a shell body comprising a door that, when opened, exposes an opening into an interior of the shell body, the door configured to close over the opening. The sprayer can further comprise a trigger connected to a handle, a motor in the interior, and a paint reservoir connected to the shell body. The sprayer can further comprise a nozzle in fluid communication with the reservoir and a pump located in the interior of the shell body. The pump is operated by the motor, the pump configured to pump the paint from the reservoir out of the nozzle as a spray. The pump is removable from the interior of the shell body through the opening when the door is opened but is not removable through the opening when the door is closed.Type: GrantFiled: January 16, 2018Date of Patent: May 18, 2021Assignee: Graco Minnesota Inc.Inventors: Charles W. Dawson, Diane L. Olson, Pamela J. Muetzel
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Patent number: 10705554Abstract: A portable hydraulic power unit includes a fluid tank supported on a frame, a first pump configured to draw hydraulic fluid from the tank and a second pump configured to draw hydraulic fluid from the tank. The portable hydraulic power unit further includes a two-way valve disposed on a high-flow line extending from an output of the second pump, the two-way valve movable between an open state and a closed state. The two-way valve is electrically-actuated and configured to shift to the open state based on a hydraulic fluid pressure in a combined flow line downstream of the first pump and the second pump exceeding a threshold pressure level. The two-way valve directs the output of the second pump back to the fluid tank when the two-way valve is in the open state.Type: GrantFiled: April 27, 2018Date of Patent: July 7, 2020Assignee: Graco Minnesota Inc.Inventors: Charles W. Dawson, Mariusz J. Luczak, Barry W. Mattson, Douglas S. Ryder, Bret A. Deneson, Christopher A. Lins
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Patent number: 10656669Abstract: A trigger guard for a pendant for controlling a hydraulic power unit includes a first prong extending from a front side of a handle of the pendant; a second prong extending from the front side of the handle; a groove disposed between the first prong and the second prong, the groove defined by the first prong, the second prong, and the handle; a first gap disposed between the first prong and a head of the pendant; and a second gap disposed between the second prong and the head. The trigger is disposed between the first prong and the second prong such that the trigger is accessible through the groove, the first gap, and the second gap.Type: GrantFiled: April 27, 2018Date of Patent: May 19, 2020Assignee: Graco Minnesota Inc.Inventors: Charles W. Dawson, Douglas S. Ryder
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Publication number: 20180313342Abstract: A portable hydraulic power unit includes a frame, a fluid tank supported by the frame, and a manifold supported by the frame. The fluid tank is configured to store a supply of hydraulic fluid for powering a hydraulically-driven tool. A reciprocating pump is mounted on the exterior of the fluid tank and on the exterior of the manifold. The reciprocating pump is secured to the fluid tank and the manifold with fasteners extending through a cylinder body of the reciprocating pump.Type: ApplicationFiled: April 27, 2018Publication date: November 1, 2018Inventors: Charles W. Dawson, Mariusz J. Luczak, Barry W. Mattson, Douglas S. Ryder, Bret A. Deneson, Christopher A. Lins
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Publication number: 20180313344Abstract: A portable hydraulic power unit includes a frame, a fluid tank supported by the frame, and a manifold supported by the frame. The fluid tank is configured to store a supply of hydraulic fluid for powering a hydraulically-driven tool. A reciprocating pump is mounted on the exterior of the fluid tank and on the exterior of the manifold. The reciprocating pump is secured to the fluid tank and the manifold with fasteners extending through a cylinder body of the reciprocating pump.Type: ApplicationFiled: April 27, 2018Publication date: November 1, 2018Inventors: Charles W. Dawson, Mariusz J. Luczak, Barry W. Mattson, Douglas S. Ryder, Bret A. Deneson, Christopher A. Lins
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Publication number: 20180314288Abstract: A trigger guard for a pendant for controlling a hydraulic power unit includes a first prong extending from a front side of a handle of the pendant; a second prong extending from the front side of the handle; a groove disposed between the first prong and the second prong, the groove defined by the first prong, the second prong, and the handle; a first gap disposed between the first prong and a head of the pendant; and a second gap disposed between the second prong and the head. The trigger is disposed between the first prong and the second prong such that the trigger is accessible through the groove, the first gap, and the second gap.Type: ApplicationFiled: April 27, 2018Publication date: November 1, 2018Inventors: Charles W. Dawson, Douglas S. Ryder
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Publication number: 20180313350Abstract: A portable hydraulic power unit includes a fluid tank supported on a frame, a first pump configured to draw hydraulic fluid from the tank and a second pump configured to draw hydraulic fluid from the tank. The portable hydraulic power unit further includes a two-way valve disposed on a high-flow line extending from an output of the second pump, the two-way valve movable between an open state and a closed state. The two-way valve is electrically-actuated and configured to shift to the open state based on a hydraulic fluid pressure in a combined flow line downstream of the first pump and the second pump exceeding a threshold pressure level. The two-way valve directs the output of the second pump back to the fluid tank when the two-way valve is in the open state.Type: ApplicationFiled: April 27, 2018Publication date: November 1, 2018Inventors: Charles W. Dawson, Mariusz J. Luczak, Barry W. Mattson, Douglas S. Ryder, Bret A. Deneson, Christopher A. Lins
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Publication number: 20180200743Abstract: Various embodiments concern a handheld paint sprayer for spraying a paint. The sprayer can comprise a shell body comprising a door that, when opened, exposes an opening into an interior of the shell body, the door configured to close over the opening. The sprayer can further comprise a trigger connected to a handle, a motor in the interior, and a paint reservoir connected to the shell body. The sprayer can further comprise a nozzle in fluid communication with the reservoir and a pump located in the interior of the shell body. The pump is operated by the motor, the pump configured to pump the paint from the reservoir out of the nozzle as a spray. The pump is removable from the interior of the shell body through the opening when the door is opened but is not removable through the opening when the door is closed.Type: ApplicationFiled: January 16, 2018Publication date: July 19, 2018Inventors: Charles W. Dawson, Diane L. Olson, Pamela J. Muetzel
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Publication number: 20170326563Abstract: An adapter allows direct connection of a handheld spray device to paint cans of varying dimensions. The adapter includes a cage for holding the paint can, a cap that connects the cage to the handheld spray device, and a gasket that seals the open upper end of the paint can to the cap. The adapter may also include a suction tube extension that is connectable between the pump inlet and the suction tube of the spray device. A can spacer insert is positionable in the cage to elevate paint cans of varying heights so that the upper ring of the paint can engages the gasket.Type: ApplicationFiled: August 3, 2017Publication date: November 16, 2017Inventors: Daniel R. Johnson, Dale C. Pemberton, Charles W. Dawson, Pamela J. Muetzel
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Patent number: 9795978Abstract: An adapter allows direct connection of a handheld spray device to paint cans of varying dimensions. The adapter includes a cage for holding the paint can, a cap that connects the cage to the handheld spray device, and a gasket that seals the open upper end of the paint can to the cap. The adapter may also include a suction tube extension that is connectable between the pump inlet and the suction tube of the spray device. A can spacer insert is positionable in the cage to elevate paint cans of varying heights so that the upper ring of the paint can engages the gasket.Type: GrantFiled: October 30, 2014Date of Patent: October 24, 2017Assignee: Graco Minnesota Inc.Inventors: Daniel R. Johnson, Dale C. Pemberton, Charles W. Dawson, Pamela J. Muetzel
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Patent number: 9764346Abstract: An adapter (14) allows direct connection of a handheld spray device (10) to paint cans (12, 12A, 12B, 12C), of varying dimensions. The adapter (14) includes a cage (60) for holding the paint can (12, 12A, 12B, 12C), a cap (62) that connects the cage (60) to the handheld spray device (10), and a gasket (64) that seals the open upper end of the paint can (12, 12A, 12B, 12C) to the cap (62). The adapter (14) may also include a suction tube extension 66 that is connectable between the pump inlet (52) and the suction tube (54) of the spray device (10).Type: GrantFiled: May 8, 2014Date of Patent: September 19, 2017Assignee: Graco Minnesota Inc.Inventors: Daniel R. Johnson, Dale C. Pemberton, Charles W. Dawson, Pamela J. Muetzel
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Patent number: D814610Type: GrantFiled: January 13, 2017Date of Patent: April 3, 2018Assignee: Graco Minnesota Inc.Inventors: Charles W. Dawson, Diane L. Olson, Pamela J. Muetzel
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Patent number: D844106Type: GrantFiled: February 23, 2018Date of Patent: March 26, 2019Assignee: Graco Minnesota Inc.Inventors: Charles W. Dawson, Diane L. Olson, Pamela J. Muetzel
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Patent number: D857162Type: GrantFiled: January 14, 2019Date of Patent: August 20, 2019Assignee: Graco Minnesota Inc.Inventors: Charles W. Dawson, Diane L. Olson, Pamela J. Muetzel
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Patent number: D904318Type: GrantFiled: December 13, 2019Date of Patent: December 8, 2020Assignee: Graco Minnesota Inc.Inventors: Douglas S. Ryder, Charles W. Dawson