Patents by Inventor Justin G. Johnston
Justin G. Johnston 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: 11835038Abstract: A paint sprayer includes an end bell, a motor connected to the end bell, a pump drive connected to the end bell, a pair of protrusions attached to an extending from the end bell such that each protrusion is cantilevered from the end bell, and a pump assembly comprising a pair of mounting holes and containing a piston. The pair of mounting holes is adapted to receive and slide onto the pair of protrusions to mount the pump assembly on the end bell as well as slide off of the pair of protrusions to remove the pump assembly from the end bell. The pump drive is configured to covert rotational motion output by the motor to reciprocal motion. The pump assembly is configured to pump paint when reciprocated by the pump drive while mounted on the end bell.Type: GrantFiled: March 10, 2023Date of Patent: December 5, 2023Assignee: Graco Minnesota Inc.Inventors: Max Carideo, James M. Dalton, Justin G Johnston, Steve J. Wrobel, Christopher A. Lins
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Publication number: 20230278053Abstract: A spray gun includes a valve cartridge configured to be axially installed and removed as a single piece. The valve cartridge includes the wear components of the spray gun. A trigger of the spray gun is configured to actuate a slider of the valve cartridge to control spraying by the spray gun. The trigger can slide between a spray position, where the trigger prevents forward axial movement of the valve cartridge, and a repair position, where the valve cartridge can move axially forward.Type: ApplicationFiled: May 12, 2023Publication date: September 7, 2023Inventors: Justin G. Johnston, Steve J. Wrobel
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Publication number: 20230213029Abstract: A paint sprayer includes an end bell, a motor connected to the end bell, a pump drive connected to the end bell, a pair of protrusions attached to an extending from the end bell such that each protrusion is cantilevered from the end bell, and a pump assembly comprising a pair of mounting holes and containing a piston. The pair of mounting holes is adapted to receive and slide onto the pair of protrusions to mount the pump assembly on the end bell as well as slide off of the pair of protrusions to remove the pump assembly from the end bell. The pump drive is configured to covert rotational motion output by the motor to reciprocal motion. The pump assembly is configured to pump paint when reciprocated by the pump drive while mounted on the end bell.Type: ApplicationFiled: March 10, 2023Publication date: July 6, 2023Inventors: Max Carideo, James M. Dalton, Justin G. Johnston, Steve J. Wrobel, Christopher A. Lins
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Patent number: 11684937Abstract: A spray gun includes a valve cartridge configured to be axially installed and removed as a single piece. The valve cartridge includes the wear components of the spray gun. A trigger of the spray gun is configured to actuate a slider of the valve cartridge to control spraying by the spray gun. The trigger includes arms that are mounted to the spray gun by a pivot mechanism. The pivot mechanism can be disengaged from the arms to allow the trigger to slide between a spray position, where the trigger prevents forward axial movement of the valve cartridge, and a repair position, where the valve cartridge can move axially forward. The trigger also includes upper and lower portions that are movable relative to each other, such that the length of the trigger can be adjusted.Type: GrantFiled: January 27, 2020Date of Patent: June 27, 2023Assignee: Graco Minnesota Inc.Inventors: Justin G. Johnston, Steve J. Wrobel
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Patent number: 11603835Abstract: A paint sprayer includes an end bell, a motor connected to the end bell, a pump drive connected to the end bell, a pair of protrusions attached to an extending from the end bell such that each protrusion is cantilevered from the end bell, and a pump assembly comprising a pair of mounting holes and containing a piston. The pair of mounting holes is adapted to receive and slide onto the pair of protrusions to mount the pump assembly on the end bell as well as slide off of the pair of protrusions to remove the pump assembly from the end bell. The pump drive is configured to covert rotational motion output by the motor to reciprocal motion. The pump assembly is configured to pump paint when reciprocated by the pump drive while mounted on the end bell.Type: GrantFiled: April 22, 2022Date of Patent: March 14, 2023Assignee: Graco Minnesota Inc.Inventors: Max Carideo, James M. Dalton, Justin G. Johnston, Steve J. Wrobel, Christopher A. Lins
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Publication number: 20220243717Abstract: A paint sprayer includes an end bell, a motor connected to the end bell, a pump drive connected to the end bell, a pair of protrusions attached to an extending from the end bell such that each protrusion is cantilevered from the end bell, and a pump assembly comprising a pair of mounting holes and containing a piston. The pair of mounting holes is adapted to receive and slide onto the pair of protrusions to mount the pump assembly on the end bell as well as slide off of the pair of protrusions to remove the pump assembly from the end bell. The pump drive is configured to covert rotational motion output by the motor to reciprocal motion. The pump assembly is configured to pump paint when reciprocated by the pump drive while mounted on the end bell.Type: ApplicationFiled: April 22, 2022Publication date: August 4, 2022Inventors: Max Carideo, James M. Dalton, Justin G. Johnston, Steve J. Wrobel, Christopher A. Lins
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Patent number: 11319947Abstract: A paint sprayer includes an end bell, a motor connected to the end bell, a pump drive connected to the end bell, a pair of protrusions attached to an extending from the end bell such that each protrusion is cantilevered from the end bell, and a pump assembly comprising a pair of mounting holes and containing a piston. The pair of mounting holes is adapted to receive and slide onto the pair of protrusions to mount the pump assembly on the end bell as well as slide off of the pair of protrusions to remove the pump assembly from the end bell. The pump drive is configured to covert rotational motion output by the motor to reciprocal motion. The pump assembly is configured to pump paint when reciprocated by the pump drive while mounted on the end bell.Type: GrantFiled: March 24, 2020Date of Patent: May 3, 2022Assignee: Graco Minnesota Inc.Inventors: Max Carideo, James M. Dalton, Justin G. Johnston, Steve J. Wrobel, Christopher A. Lins
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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: 10717097Abstract: A spray gun includes a valve cartridge configured to be axially installed and removed as a single piece. The valve cartridge includes the wear components of the spray gun. A trigger of the spray gun is configured to actuate a slider of the valve cartridge to control spraying by the spray gun. The trigger includes arms that are mounted to the spray gun by a pivot mechanism. The pivot mechanism can be disengaged from the arms to allow the trigger to slide between a spray position, where the trigger prevents forward axial movement of the valve cartridge, and a repair position, where the valve cartridge can move axially forward. The trigger also includes upper and lower portions that are movable relative to each other, such that the length of the trigger can be adjusted.Type: GrantFiled: March 27, 2019Date of Patent: July 21, 2020Assignee: Graco Minnesota Inc.Inventors: Justin G. Johnston, Steve J. Wrobel
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Publication number: 20200217313Abstract: A paint sprayer includes an end bell, a motor connected to the end bell, a pump drive connected to the end bell, a pair of protrusions attached to an extending from the end bell such that each protrusion is cantilevered from the end bell, and a pump assembly comprising a pair of mounting holes and containing a piston. The pair of mounting holes is adapted to receive and slide onto the pair of protrusions to mount the pump assembly on the end bell as well as slide off of the pair of protrusions to remove the pump assembly from the end bell. The pump drive is configured to covert rotational motion output by the motor to reciprocal motion. The pump assembly is configured to pump paint when reciprocated by the pump drive while mounted on the end bell.Type: ApplicationFiled: March 24, 2020Publication date: July 9, 2020Inventors: Max Carideo, James M. Dalton, Justin G. Johnston, Steve J. Wrobel, Christopher A. Lins
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Publication number: 20200156095Abstract: A spray gun includes a valve cartridge configured to be axially installed and removed as a single piece. The valve cartridge includes the wear components of the spray gun. A trigger of the spray gun is configured to actuate a slider of the valve cartridge to control spraying by the spray gun. The trigger includes arms that are mounted to the spray gun by a pivot mechanism. The pivot mechanism can be disengaged from the arms to allow the trigger to slide between a spray position, where the trigger prevents forward axial movement of the valve cartridge, and a repair position, where the valve cartridge can move axially forward. The trigger also includes upper and lower portions that are movable relative to each other, such that the length of the trigger can be adjusted.Type: ApplicationFiled: January 27, 2020Publication date: May 21, 2020Inventors: Justin G. Johnston, Steve J. Wrobel
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Patent number: 10634132Abstract: A paint sprayer includes an end bell, a motor connected to the end bell, a pump drive connected to the end bell, a pair of protrusions attached to an extending from the end bell such that each protrusion is cantilevered from the end bell, and a pump assembly comprising a pair of mounting holes and containing a piston. The pair of mounting holes is adapted to receive and slide onto the pair of protrusions to mount the pump assembly on the end bell as well as slide off of the pair of protrusions to remove the pump assembly from the end bell. The pump drive is configured to covert rotational motion output by the motor to reciprocal motion. The pump assembly is configured to pump paint when reciprocated by the pump drive while mounted on the end bell.Type: GrantFiled: January 11, 2017Date of Patent: April 28, 2020Assignee: Graco Minnesota Inc.Inventors: Max Carideo, James M. Dalton, Justin G. Johnston, Steve J. Wrobel, Christopher A. Lins
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Patent number: 10589303Abstract: A spray gun includes a valve cartridge configured to be axially installed and removed as a single piece. The valve cartridge includes the wear components of the spray gun. A trigger of the spray gun is configured to actuate a slider of the valve cartridge to control spraying by the spray gun. The trigger includes arms that are mounted to the spray gun by a pivot mechanism. The pivot mechanism can be disengaged from the arms to allow the trigger to slide between a spray position, where the trigger prevents forward axial movement of the valve cartridge, and a repair position, where the valve cartridge can move axially forward. The trigger also includes upper and lower portions that are movable relative to each other, such that the length of the trigger can be adjusted.Type: GrantFiled: March 27, 2019Date of Patent: March 17, 2020Assignee: Graco Minnesota Inc.Inventors: Justin G. Johnston, Steve J. Wrobel
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Patent number: 10465678Abstract: A piston rod assembly includes a piston rod having a first end configured to contact fluid, a packing retainer through which the piston rod extends, and one or more packing rings. The packing retainer includes one or more leakage ports forming passageways between an inner surface and an outer surface of the packing retainer. The one or more packing rings surround the piston rod, are adjacent the inner surface of the packing retainer, and are positioned between the one or more leakage ports and a bottom end of the packing retainer. The one or more leakage ports are positioned so that fluid that leaks past the one or more packing rings will flow through the one or more leakage ports.Type: GrantFiled: February 3, 2017Date of Patent: November 5, 2019Assignee: Graco MinnesotaInventors: Steve J. Wrobel, Justin G. Johnston, Christopher A. Lins, Brian M. Mulgrew
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Publication number: 20190299233Abstract: A spray gun includes a valve cartridge configured to be axially installed and removed as a single piece. The valve cartridge includes the wear components of the spray gun. A trigger of the spray gun is configured to actuate a slider of the valve cartridge to control spraying by the spray gun. The trigger includes arms that are mounted to the spray gun by a pivot mechanism. The pivot mechanism can be disengaged from the arms to allow the trigger to slide between a spray position, where the trigger prevents forward axial movement of the valve cartridge, and a repair position, where the valve cartridge can move axially forward. The trigger also includes upper and lower portions that are movable relative to each other, such that the length of the trigger can be adjusted.Type: ApplicationFiled: March 27, 2019Publication date: October 3, 2019Inventors: Justin G. Johnston, Steve J. Wrobel
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Publication number: 20190299232Abstract: A spray gun includes a valve cartridge configured to be axially installed and removed as a single piece. The valve cartridge includes the wear components of the spray gun. A trigger of the spray gun is configured to actuate a slider of the valve cartridge to control spraying by the spray gun. The trigger includes arms that are mounted to the spray gun by a pivot mechanism. The pivot mechanism can be disengaged from the arms to allow the trigger to slide between a spray position, where the trigger prevents forward axial movement of the valve cartridge, and a repair position, where the valve cartridge can move axially forward. The trigger also includes upper and lower portions that are movable relative to each other, such that the length of the trigger can be adjusted.Type: ApplicationFiled: March 27, 2019Publication date: October 3, 2019Inventors: Justin G. Johnston, Steve J. Wrobel
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Patent number: 10371145Abstract: A piston rod for pumping paint includes an elongated cylindrical stem and a piston rod cap connected to the cylindrical stem. The cylindrical stem is formed from metal and has an outer diameter that is uniform along most or all of a length of the cylindrical stem. The piston rod cap is cylindrical and formed from metal. The piston rod cap includes an annular top portion that has an outer diameter that is larger than the outer diameter of the cylindrical stem, an annular bottom portion that has an outer diameter that is larger than the outer diameter of the cylindrical stem, and an exterior recess located between the annular top and bottom portions. The recess has an outer diameter that is smaller than the outer diameters of the annular top and bottom portions.Type: GrantFiled: January 12, 2017Date of Patent: August 6, 2019Assignee: Graco Minnesota Inc.Inventors: Justin G. Johnston, Andrew J. Kopel, Brian M. Mulgrew, Steve J. Wrobel
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Patent number: D875885Type: GrantFiled: November 28, 2018Date of Patent: February 18, 2020Assignee: Graco Minnesota Inc.Inventors: Justin G. Johnston, Brian M. Mulgrew
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Patent number: D877294Type: GrantFiled: November 28, 2018Date of Patent: March 3, 2020Assignee: Graco Minnesota Inc.Inventors: Justin G. Johnston, Brian M. Mulgrew
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Patent number: D901626Type: GrantFiled: November 28, 2018Date of Patent: November 10, 2020Assignee: Graco Minnesota Inc.Inventors: Justin G. Johnston, Brian M. Mulgrew