Patents by Inventor Samuel R. Stewart
Samuel R. Stewart 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: 11896992Abstract: A mix chamber for a plural component sprayer is configured to receive first and second component materials and emit a spray of a resulting plural component material. The mix chamber includes a chamber body extending between a first end and a second end and including flat lateral sides. A ramp feature is disposed proximate the first end and is configured to contact and push first and second side seals, respectively, away from a body axis as the mix chamber shifts in a first direction through a cartridge bore to increase a gap between the first side seal and the second side seal such that the first side seal engages the first flat lateral side and the second side seal engages the second flat lateral side.Type: GrantFiled: August 12, 2022Date of Patent: February 13, 2024Assignee: Graco Minnesota Inc.Inventors: Daniel P. Ross, Joseph E. Tix, Samuel R. Stewart, Mark T. Weinberger, Christopher J. Pellin, Jeffrey N. Velgersdyk, Jack A. Bosak, Jacob R. Whiteoak
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Patent number: 11701670Abstract: A spray tip is configured to atomize thick, viscous fluids. The spray tip includes a pre-orifice piece having an inlet orifice that defines a first restriction in a fluid path through the spray tip. The spray tip also includes a tip piece having an outlet orifice that defines a second restriction in the fluid path. The first and second restrictions are the portions of the fluid path having the smallest flow areas. A cross-sectional area of the outlet orifice is greater than a cross-sectional area of the inlet orifice.Type: GrantFiled: November 20, 2020Date of Patent: July 18, 2023Inventors: Samuel R. Stewart, Robert W. Kinne
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Publication number: 20230211363Abstract: A fluid cartridge for a plural component sprayer is configured to receive first and second component materials and purge air from the sprayer and provide the first and second component materials and purge air to a mix chamber for spraying. The fluid cartridge includes a cartridge body, material flowpaths extending from a second end to a cartridge bore, and a purge path extending from the second end to the cartridge bore. Fluid checks are disposed in the material flowpaths and purge path to prevent backflow out of the fluid cartridge. Side seals are disposed in the material paths and are pre-loaded to extend into the cartridge bore and engage a mix chamber within the cartridge bore.Type: ApplicationFiled: March 14, 2023Publication date: July 6, 2023Inventors: Daniel P. Ross, Joseph E. Tix, Samuel R. Stewart, Mark T. Weinberger, Christopher J. Pellin, Jeffrey N. Velgersdyk
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Patent number: 11633748Abstract: A fluid cartridge for a plural component sprayer is configured to receive first and second component materials and purge air from the sprayer and provide the first and second component materials and purge air to a mix chamber for spraying. The fluid cartridge includes a cartridge body, material flowpaths extending from a second end to a cartridge bore, and a purge path extending from the second end to the cartridge bore. Fluid checks are disposed in the material flowpaths and purge path to prevent backflow out of the fluid cartridge. Side seals are disposed in the material paths and are pre-loaded to extend into the cartridge bore and engage a mix chamber within the cartridge bore.Type: GrantFiled: October 25, 2019Date of Patent: April 25, 2023Assignee: Graco Minnesota Inc.Inventors: Daniel P. Ross, Joseph E. Tix, Samuel R. Stewart, Mark T. Weinberger, Christopher J. Pellin, Jeffrey N. Velgersdyk
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Patent number: 11572876Abstract: A pump having significantly minimized or no ullage for pumping material (fluid or aggregate).Type: GrantFiled: August 29, 2018Date of Patent: February 7, 2023Assignee: Graco Minnesota Inc.Inventors: Joseph E. Tix, Jeffrey N. Velgersdyk, Samuel R. Stewart, Jacob T. Elmer, Roman S. Kopylov, Christopher J. Pellin, Jeromy D. Horning
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Patent number: 11541405Abstract: A fluid cartridge for a plural component sprayer is configured to receive first and second component materials and purge air from the sprayer and provide the first and second component materials and purge air to a mix chamber for spraying. The fluid cartridge includes a cartridge body, material flowpaths extending from a second end to a cartridge bore, and a purge path extending from the second end to the cartridge bore. Fluid checks are disposed in the material flowpaths and purge path to prevent backflow out of the fluid cartridge. Side seals are disposed in the material paths and are pre-loaded to extend into the cartridge bore and engage a mix chamber within the cartridge bore.Type: GrantFiled: April 29, 2021Date of Patent: January 3, 2023Assignee: Graco Minnesota Inc.Inventors: Daniel P. Ross, Joseph E. Tix, Samuel R. Stewart, Mark T. Weinberger, Christopher J. Pellin, Jeffrey N. Velgersdyk
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Publication number: 20220388018Abstract: A mix chamber for a plural component sprayer is configured to receive first and second component materials and emit a spray of a resulting plural component material. The mix chamber includes a chamber body extending between a first end and a second end and including flat lateral sides. A ramp feature is disposed proximate the first end and is configured to contact and push first and second side seals, respectively, away from a body axis as the mix chamber shifts in a first direction through a cartridge bore to increase a gap between the first side seal and the second side seal such that the first side seal engages the first flat lateral side and the second side seal engages the second flat lateral side.Type: ApplicationFiled: August 12, 2022Publication date: December 8, 2022Inventors: Daniel P. Ross, Joseph E. Tix, Samuel R. Stewart, Mark T. Weinberger, Christopher J. Pellin, Jeffrey N. Velgersdyk, Jack A. Bosak, Jacob R. Whiteoak
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Patent number: 11413635Abstract: A mix chamber for a plural component sprayer is configured to receive first and second component materials and emit a spray of a resulting plural component material. The mix chamber includes a chamber body extending between a first end and a second end and including flat lateral sides. A ramp feature is disposed proximate the first end and is configured to contact and push first and second side seals, respectively, away from a body axis as the mix chamber shifts in a first direction through a cartridge bore to increase a gap between the first side seal and the second side seal such that the first side seal engages the first flat lateral side and the second side seal engages the second flat lateral side.Type: GrantFiled: October 25, 2019Date of Patent: August 16, 2022Assignee: Graco Minnesota Inc.Inventors: Daniel P. Ross, Joseph E. Tix, Samuel R. Stewart, Mark T. Weinberger, Christopher J. Pellin, Jeffrey N. Velgersdyk, Jack A. Bosak, Jacob R. Whiteoak
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Patent number: 11173507Abstract: A mix chamber for a plural component sprayer is configured to receive first and second component materials and emit a spray of a resulting plural component material. The mix chamber includes a chamber body extending between a first end and a second end and including flat lateral sides. A ramp feature is disposed proximate the first end and is configured to contact and push first and second side seals, respectively, away from a body axis as the mix chamber shifts in a first direction through a cartridge bore to increase a gap between the first side seal and the second side seal such that the first side seal engages the first flat lateral side and the second side seal engages the second flat lateral side.Type: GrantFiled: October 25, 2019Date of Patent: November 16, 2021Assignee: Graco Minnesota Inc.Inventors: Daniel P. Ross, Joseph E. Tix, Samuel R. Stewart, Mark T. Weinberger, Christopher J. Pellin, Jeffrey N. Velgersdyk, Jack A. Bosak, Jacob R. Whiteoak
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Publication number: 20210245184Abstract: A fluid cartridge for a plural component sprayer is configured to receive first and second component materials and purge air from the sprayer and provide the first and second component materials and purge air to a mix chamber for spraying. The fluid cartridge includes a cartridge body, material flowpaths extending from a second end to a cartridge bore, and a purge path extending from the second end to the cartridge bore. Fluid checks are disposed in the material flowpaths and purge path to prevent backflow out of the fluid cartridge. Side seals are disposed in the material paths and are pre-loaded to extend into the cartridge bore and engage a mix chamber within the cartridge bore.Type: ApplicationFiled: April 29, 2021Publication date: August 12, 2021Inventors: Daniel P. Ross, Joseph E. Tix, Samuel R. Stewart, Mark T. Weinberger, Christopher J. Pellin, Jeffrey N. Velgersdyk
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Publication number: 20210229113Abstract: A spray tip is configured to atomize thick, viscous fluids. The spray tip includes a pre-orifice piece having an inlet orifice that defines a first restriction in a fluid path through the spray tip. The spray tip also includes a tip piece having an outlet orifice that defines a second restriction in the fluid path. The first and second restrictions are the portions of the fluid path having the smallest flow areas. A cross-sectional area of the outlet orifice is greater than a cross-sectional area of the inlet orifice.Type: ApplicationFiled: November 20, 2020Publication date: July 29, 2021Inventors: Samuel R. Stewart, Robert W. Kinne
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Publication number: 20210170426Abstract: A tip piece for a sprayer includes a tip body extending between a first end and a second end. A passage extends inside the tip body from the first end to a terminal end between the first end and the second end of the tip body. A nozzle extends into the tip body from the second end of the tip body and intersects the terminal end of the passage to form an orifice. A rounded interface is formed on a perimeter of the orifice between the nozzle and the terminal end of the passage.Type: ApplicationFiled: November 16, 2020Publication date: June 10, 2021Inventors: Samuel R. Stewart, Calvin K. Henrikson, Robert J. Lind, Jeffrey N. Velgersdyk
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Publication number: 20200129998Abstract: A mix chamber for a plural component sprayer is configured to receive first and second component materials and emit a spray of a resulting plural component material. The mix chamber includes a chamber body extending between a first end and a second end and including flat lateral sides. A ramp feature is disposed proximate the first end and is configured to contact and push first and second side seals, respectively, away from a body axis as the mix chamber shifts in a first direction through a cartridge bore to increase a gap between the first side seal and the second side seal such that the first side seal engages the first flat lateral side and the second side seal engages the second flat lateral side.Type: ApplicationFiled: October 25, 2019Publication date: April 30, 2020Inventors: Daniel P. Ross, Joseph E. Tix, Samuel R. Stewart, Mark T. Weinberger, Christopher J. Pellin, Jeffrey N. Velgersdyk, Jack A. Bosak, Jacob R. Whiteoak
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Publication number: 20200129999Abstract: A fluid cartridge for a plural component sprayer is configured to receive first and second component materials and purge air from the sprayer and provide the first and second component materials and purge air to a mix chamber for spraying. The fluid cartridge includes a cartridge body, material flowpaths extending from a second end to a cartridge bore, and a purge path extending from the second end to the cartridge bore. Fluid checks are disposed in the material flowpaths and purge path to prevent backflow out of the fluid cartridge. Side seals are disposed in the material paths and are pre-loaded to extend into the cartridge bore and engage a mix chamber within the cartridge bore.Type: ApplicationFiled: October 25, 2019Publication date: April 30, 2020Inventors: Daniel P. Ross, Joseph E. Tix, Samuel R. Stewart, Mark T. Weinberger, Christopher J. Pellin, Jeffrey N. Velgersdyk
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Publication number: 20190063428Abstract: A pump having significantly minimized or no ullage for pumping material (fluid or aggregate).Type: ApplicationFiled: August 29, 2018Publication date: February 28, 2019Inventors: Joesph E. Tix, Jeffrey N. Velgersdyk, Samuel R. Stewart, Jacob T. Elmer, Roman S. Kopylov, Christopher J. Pellin, Jeromy D. Horning
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Patent number: D904562Type: GrantFiled: July 19, 2019Date of Patent: December 8, 2020Assignee: Graco Minnesota Inc.Inventors: Samuel R. Stewart, Jacob R. Whiteoak, Jack A. Bosak, Daniel P. Ross
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Patent number: D904565Type: GrantFiled: October 25, 2019Date of Patent: December 8, 2020Assignee: Graco Minnesota Inc.Inventors: Daniel P. Ross, Samuel R. Stewart, Jacob R. Whiteoak, Jack A. Bosak
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Patent number: D918337Type: GrantFiled: July 19, 2019Date of Patent: May 4, 2021Assignee: Graco Minnesota Inc.Inventors: Daniel P. Ross, Samuel R. Stewart, Jacob R. Whiteoak, Jack A. Bosak
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Patent number: D922521Type: GrantFiled: July 19, 2019Date of Patent: June 15, 2021Assignee: Graco Minnesota Inc.Inventors: Daniel P. Ross, Samuel R. Stewart, Jacob R. Whiteoak, Jack A. Bosak
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Patent number: D933159Type: GrantFiled: July 19, 2019Date of Patent: October 12, 2021Assignee: Graco Minnesota Inc.Inventors: Daniel P. Ross, Samuel R. Stewart, Jacob R. Whiteoak, Jack A. Bosak