Patents by Inventor David M. Larsen
David M. Larsen 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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Patent number: 11980911Abstract: A sprayer includes a spray gun and a hopper. An air source provides compressed air to the sprayer to both eject fluid from the spray gun as a spray and to pressurize the hopper. The spray gun includes passages for providing compressed air to the nozzle for spraying and to the hopper for pressurizing the hopper. The spray gun further includes a relief valve for venting pressurized air from the hopper. The hopper receives the compressed air through a port in the hopper, and the compressed air assists the flow of material out of the hopper and into the spray gun.Type: GrantFiled: March 23, 2023Date of Patent: May 14, 2024Assignee: Graco Minnesota Inc.Inventors: Steven D. Becker, David M. Larsen, Steve J. Wrobel, Mark D. Shultz, Robert J. Gundersen
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Publication number: 20230234085Abstract: A sprayer includes a spray gun and a hopper. An air source provides compressed air to the sprayer to both eject fluid from the spray gun as a spray and to pressurize the hopper. The spray gun includes passages for providing compressed air to the nozzle for spraying and to the hopper for pressurizing the hopper. The spray gun further includes a relief valve for venting pressurized air from the hopper. The hopper receives the compressed air through a port in the hopper, and the compressed air assists the flow of material out of the hopper and into the spray gun.Type: ApplicationFiled: March 23, 2023Publication date: July 27, 2023Inventors: Steven D. Becker, David M. Larsen, Steve J. Wrobel, Mark D. Shultz, Robert J. Gundersen
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Publication number: 20230184235Abstract: A pump assembly includes a pump module configured to be supported by a fluid tank and a drive module configured to be supported by the pump module. The drive module is mountable to and dismountable from the pump module. The drive module provides a motive force to the pump module to power pumping by the pump module.Type: ApplicationFiled: May 27, 2021Publication date: June 15, 2023Inventors: Matthew R. Theisen, Bryan K. Colby, Bryce J. Gapinski, Jeremy P. Jurmu, David M. Larsen, Mark D. Shultz
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Publication number: 20230136204Abstract: A pumping assembly comprises: a motor (24) including a stator and a rotor, the rotor configured to rotate relative the stator on a pump axis (PA); a drive mechanism (24) connected to the rotor, the drive mechanism (24) configured to receive a rotational output from the rotor and convert the rotational output into a linear input along the pump axis to cause pumping of the fluid; and a piston (34) connected to the drive mechanism (26) to receive the linear input and disposed coaxially with the drive mechanism (26) and the rotor, wherein the piston (34) is configured to reciprocate axially along the pump axis to pump fluid.Type: ApplicationFiled: March 31, 2021Publication date: May 4, 2023Inventors: Matthew R. Theisen, Arthur T. Graf, Bryan K. Colby, Andrew J. Ericson, Thomas F. Janecek, Christopher A. Lins, Alexander J. Daeger, David M. Larsen, Jeremy P. Jurmu, William M. Blenkush, Mark D. Shultz, Steven D. Becker
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Patent number: 11623233Abstract: A sprayer includes a spray gun and a hopper. An air source provides compressed air to the sprayer to both eject fluid from the spray gun as a spray and to pressurize the hopper. The spray gun includes passages for providing compressed air to the nozzle for spraying and to the hopper for pressurizing the hopper. The spray gun further includes a relief valve for venting pressurized air from the hopper. The hopper receives the compressed air through a port in the hopper, and the compressed air assists the flow of material out of the hopper and into the spray gun.Type: GrantFiled: June 16, 2021Date of Patent: April 11, 2023Assignee: Graco Minnesota Inc.Inventors: Steven D. Becker, David M. Larsen, Steve J. Wrobel, Mark D. Shultz, Robert J. Gundersen
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Publication number: 20230059159Abstract: A battery powered driver for propelling a wheeled ground surface modifying machine includes at least one wheel contacting a ground surface, a battery powered electric motor, control circuitry configured to manage delivery of electrical battery power to the electric motor to control a sped of the driver, at least one pedal attached to a pedal axle and tiltable in each of a forward and rearward direction with respect to the pedal axle, and at least one pedal tilt sensor configured to output one or more signals to the control circuitry indicating a degree of tilt of the at least one pedal.Type: ApplicationFiled: November 4, 2022Publication date: February 23, 2023Inventors: Joshua D. Roden, Tyler J. Kruzel, James C. Schroeder, Mark D. Shultz, David M. Larsen
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Patent number: 11518253Abstract: A battery powered driver for propelling a wheeled ground surface modifying machine includes at least one wheel contacting a ground surface, a battery powered electric motor, control circuitry configured to manage delivery of electrical battery power to the electric motor to control a sped of the driver, at least one pedal attached to a pedal axle and tiltable in each of a forward and rearward direction with respect to the pedal axle, and at least one pedal tilt sensor configured to output one or more signals to the control circuitry indicating a degree of tilt of the at least one pedal.Type: GrantFiled: November 20, 2019Date of Patent: December 6, 2022Assignee: Graco Minnesota Inc.Inventors: Joshua D. Roden, Tyler J. Kruzel, James C. Schroeder, Mark D. Shultz, David M. Larsen
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Patent number: 11440038Abstract: A material sprayer includes a hopper module and a power module. The power module is mountable and dismountable from the hopper module. The hopper module includes a hopper frame and a hopper supported by the hopper frame. The power module includes a drive and a pump connected to and configured to be powered by the drive. The pump interfaces with the hopper with the power module mounted on the hopper frame such that the pump can draw material from the hopper.Type: GrantFiled: September 4, 2019Date of Patent: September 13, 2022Assignee: Graco Minnesota Inc.Inventors: Mark D. Shultz, David M. Larsen, Max Carideo, Bradley K. Voigt
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Patent number: 11333137Abstract: A transfer pump includes a drive module having electronic components and a fluid module not including electronic components. The drive module provides motive power to a pump of the fluid module to power pumping by the fluid module. The transfer pump further includes a spout extending mounted to an outlet connector of the fluid module by an inlet end of the spout interfacing with an outlet end of the outlet connector. The spout is repositionable relative to the outlet connector while mounted to the outlet connector.Type: GrantFiled: May 27, 2021Date of Patent: May 17, 2022Assignee: Graco Minnesota Inc.Inventors: Jeremy P. Jurmu, David M. Larsen
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Publication number: 20210372387Abstract: A transfer pump includes a drive module having electronic components and a fluid module not including electronic components. The drive module provides motive power to a pump of the fluid module to power pumping by the fluid module. The drive module is movably mounted to the fluid module at dynamic and static interfaces to power reciprocation of a pumping component of the fluid module by the dynamic interface and such the drive module supports the fluid module at the static interface.Type: ApplicationFiled: May 27, 2021Publication date: December 2, 2021Inventors: David M. Larsen, Jeremy P. Jurmu, Mark D. Shultz, Quincy A. Kesti, Marcos M. Rodriguez
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Publication number: 20210371268Abstract: A transfer pump includes a drive module having electronic components and a fluid module not including electronic components. The drive module provides motive power to a pump of the fluid module to power pumping by the fluid module. The transfer pump further includes a spout extending mounted to an outlet connector of the fluid module by an inlet end of the spout interfacing with an outlet end of the outlet connector. The spout is repositionable relative to the outlet connector while mounted to the outlet connector.Type: ApplicationFiled: May 27, 2021Publication date: December 2, 2021Inventors: Jeremy P. Jurmu, David M. Larsen
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Publication number: 20210372386Abstract: A transfer pump includes a drive module having electronic components and a fluid module not including electronic components. The drive module provides motive power to a pump of the fluid module to power pumping by the fluid module.Type: ApplicationFiled: May 27, 2021Publication date: December 2, 2021Inventors: Steven D. Becker, Mark D. Shultz, Jeremy P. Jurmu, David M. Larsen, Robert J. Gundersen
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Publication number: 20210308702Abstract: A sprayer includes a spray gun and a hopper. An air source provides compressed air to the sprayer to both eject fluid from the spray gun as a spray and to pressurize the hopper. The spray gun includes passages for providing compressed air to the nozzle for spraying and to the hopper for pressurizing the hopper. The spray gun further includes a relief valve for venting pressurized air from the hopper. The hopper receives the compressed air through a port in the hopper, and the compressed air assists the flow of material out of the hopper and into the spray gun.Type: ApplicationFiled: June 16, 2021Publication date: October 7, 2021Inventors: Steven D. Becker, David M. Larsen, Steve J. Wrobel, Mark D. Shultz, Robert J. Gundersen
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Patent number: 11052412Abstract: A sprayer includes a spray gun and a hopper. An air source provides compressed air to the sprayer to both eject fluid from the spray gun as a spray and to pressurize the hopper. The spray gun includes an airflow controller for controlling the flow of the compressed air to a nozzle of the spray gun, a pressure regulator for regulating a pressure of the compressed air flowing to the hopper, and a relief valve between the pressure regulator and the hopper. The hopper receives the compressed air through a port in the hopper, and the compressed air assists the flow of material out of the hopper and into the spray gun.Type: GrantFiled: January 25, 2019Date of Patent: July 6, 2021Assignee: Graco Minnesota Inc.Inventors: Steven D. Becker, David M. Larsen, Steve J. Wrobel, Mark D. Shultz, Robert J. Gundersen
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Patent number: 10961668Abstract: A line striper having a spray control system includes a spray gun, a lever, first and second cables, a manual actuator, and an assisted control. The lever is configured to move between a spray position and an inactive position. The first cable is mechanically linked to the lever. The manual control is mechanically linked to the first cable and configured to pull the first cable rearward to move the lever into the spray position. The second cable is mechanically linked to the lever. The assisted control is configured to pull the second cable rearward to move the lever into the spray position. The lever is independently moveable relative to the first and second cables such that movement of the lever caused by the first cable does not compress the second cable and movement of the lever caused by the second cable does not compress the first cable.Type: GrantFiled: January 20, 2017Date of Patent: March 30, 2021Assignee: Graco Minnesota Inc.Inventors: Mark D. Shultz, Daniel D. Rohling, David M. Larsen
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Patent number: 10843211Abstract: A sprayer includes a spray gun and a hopper. An air source provides compressed air to the sprayer to both eject fluid from the spray gun as a spray and to pressurize the hopper. The spray gun includes an airflow controller for controlling the flow of the compressed air to a nozzle of the spray gun, a pressure regulator for regulating a pressure of the compressed air flowing to the hopper, and a relief valve between the pressure regulator and the hopper. The hopper receives the compressed air through a port in the hopper, and the compressed air assists the flow of material out of the hopper and into the spray gun.Type: GrantFiled: January 25, 2019Date of Patent: November 24, 2020Assignee: Graco Minnesota Inc.Inventors: Steven D. Becker, David M. Larsen, Steve J. Wrobel, Mark D. Shultz, Robert J. Gundersen
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Patent number: 10815990Abstract: A fluid dispensing system includes a motor housing and a piston pump assembly connected to the motor housing. A motor is mounted within the motor housing. The piston pump assembly includes a pump housing, a cartridge having a first end that extends into a second end of the pump housing, a piston that extends into a first end of the pump housing and the first end of the cartridge, and a packing stack within the cartridge and adjacent an inner surface of the cartridge and through which the piston extends. The cartridge is configured to be removed from the pump housing, and removal of the cartridge removes the packing stack from within the pump housing while leaving the pump housing connected to the motor housing.Type: GrantFiled: April 11, 2017Date of Patent: October 27, 2020Assignee: Graco Minnesota Inc.Inventors: Mark D. Shultz, David M. Larsen, Justin G. Johnston, Steve J. Wrobel
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Patent number: D904566Type: GrantFiled: March 8, 2019Date of Patent: December 8, 2020Assignee: Graco Minnesota Inc.Inventors: David M. Larsen, Max Carideo
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Patent number: D934301Type: GrantFiled: March 8, 2019Date of Patent: October 26, 2021Assignee: Graco Minnesota Inc.Inventors: David M. Larsen, Max Carideo
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Patent number: D934918Type: GrantFiled: March 8, 2019Date of Patent: November 2, 2021Assignee: Graco Minnesota Inc.Inventors: David M. Larsen, Max Carideo