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).

  • Patent number: 11896992
    Abstract: 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: Grant
    Filed: August 12, 2022
    Date of Patent: February 13, 2024
    Assignee: 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
  • Patent number: 11701670
    Abstract: 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: Grant
    Filed: November 20, 2020
    Date of Patent: July 18, 2023
    Inventors: Samuel R. Stewart, Robert W. Kinne
  • Publication number: 20230211363
    Abstract: 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: Application
    Filed: March 14, 2023
    Publication date: July 6, 2023
    Inventors: Daniel P. Ross, Joseph E. Tix, Samuel R. Stewart, Mark T. Weinberger, Christopher J. Pellin, Jeffrey N. Velgersdyk
  • Patent number: 11633748
    Abstract: 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: Grant
    Filed: October 25, 2019
    Date of Patent: April 25, 2023
    Assignee: Graco Minnesota Inc.
    Inventors: Daniel P. Ross, Joseph E. Tix, Samuel R. Stewart, Mark T. Weinberger, Christopher J. Pellin, Jeffrey N. Velgersdyk
  • Patent number: 11572876
    Abstract: A pump having significantly minimized or no ullage for pumping material (fluid or aggregate).
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: February 7, 2023
    Assignee: 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
  • Patent number: 11541405
    Abstract: 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: Grant
    Filed: April 29, 2021
    Date of Patent: January 3, 2023
    Assignee: Graco Minnesota Inc.
    Inventors: Daniel P. Ross, Joseph E. Tix, Samuel R. Stewart, Mark T. Weinberger, Christopher J. Pellin, Jeffrey N. Velgersdyk
  • Publication number: 20220388018
    Abstract: 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: Application
    Filed: August 12, 2022
    Publication date: December 8, 2022
    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
  • Patent number: 11413635
    Abstract: 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: Grant
    Filed: October 25, 2019
    Date of Patent: August 16, 2022
    Assignee: 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
  • Patent number: 11173507
    Abstract: 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: Grant
    Filed: October 25, 2019
    Date of Patent: November 16, 2021
    Assignee: 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
  • Publication number: 20210245184
    Abstract: 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: Application
    Filed: April 29, 2021
    Publication date: August 12, 2021
    Inventors: Daniel P. Ross, Joseph E. Tix, Samuel R. Stewart, Mark T. Weinberger, Christopher J. Pellin, Jeffrey N. Velgersdyk
  • Publication number: 20210229113
    Abstract: 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: Application
    Filed: November 20, 2020
    Publication date: July 29, 2021
    Inventors: Samuel R. Stewart, Robert W. Kinne
  • Publication number: 20210170426
    Abstract: 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: Application
    Filed: November 16, 2020
    Publication date: June 10, 2021
    Inventors: Samuel R. Stewart, Calvin K. Henrikson, Robert J. Lind, Jeffrey N. Velgersdyk
  • Publication number: 20200129998
    Abstract: 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: Application
    Filed: October 25, 2019
    Publication date: April 30, 2020
    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
  • Publication number: 20200129999
    Abstract: 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: Application
    Filed: October 25, 2019
    Publication date: April 30, 2020
    Inventors: Daniel P. Ross, Joseph E. Tix, Samuel R. Stewart, Mark T. Weinberger, Christopher J. Pellin, Jeffrey N. Velgersdyk
  • Publication number: 20190063428
    Abstract: A pump having significantly minimized or no ullage for pumping material (fluid or aggregate).
    Type: Application
    Filed: August 29, 2018
    Publication date: February 28, 2019
    Inventors: Joesph E. Tix, Jeffrey N. Velgersdyk, Samuel R. Stewart, Jacob T. Elmer, Roman S. Kopylov, Christopher J. Pellin, Jeromy D. Horning
  • Patent number: D904562
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: December 8, 2020
    Assignee: Graco Minnesota Inc.
    Inventors: Samuel R. Stewart, Jacob R. Whiteoak, Jack A. Bosak, Daniel P. Ross
  • Patent number: D904565
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: December 8, 2020
    Assignee: Graco Minnesota Inc.
    Inventors: Daniel P. Ross, Samuel R. Stewart, Jacob R. Whiteoak, Jack A. Bosak
  • Patent number: D918337
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: May 4, 2021
    Assignee: Graco Minnesota Inc.
    Inventors: Daniel P. Ross, Samuel R. Stewart, Jacob R. Whiteoak, Jack A. Bosak
  • Patent number: D922521
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: June 15, 2021
    Assignee: Graco Minnesota Inc.
    Inventors: Daniel P. Ross, Samuel R. Stewart, Jacob R. Whiteoak, Jack A. Bosak
  • Patent number: D933159
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: October 12, 2021
    Assignee: Graco Minnesota Inc.
    Inventors: Daniel P. Ross, Samuel R. Stewart, Jacob R. Whiteoak, Jack A. Bosak