Patents by Inventor David Robert Dahlgren

David Robert Dahlgren 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).

  • INTERNAL VALVE PLUNGER
    Publication number: 20220290535
    Abstract: A bypass plunger includes a plunger body that includes a head portion located at one end of the plunger body and a tail portion located at an opposite end of the plunger body. The head portion includes at least one flow port, and the tail portion includes at least one passageway. A valve component is disposed within an internal bore of the plunger body and is moveable between an open position and a closed position. At least one plug is located within a respective one of the flow ports and/or a respective one of the passageways, and is configured to reduce or prevent flow through the respective flow port or the respective passageway.
    Type: Application
    Filed: May 30, 2022
    Publication date: September 15, 2022
    Inventors: Mitchell A. Boyd, Garrett S. Boyd, David Robert Dahlgren
  • Internal valve plunger
    Patent number: 11346193
    Abstract: A bypass plunger includes a plunger body that includes a head portion located at one end of the plunger body and a tail portion located at an opposite end of the plunger body. The head portion includes at least one flow port, and the tail portion includes at least one passageway. A valve component is disposed within an internal bore of the plunger body and is moveable between an open position and a closed position. At least one plug is located within a respective one of the flow ports and/or a respective one of the passageways, and is configured to reduce or prevent flow through the respective flow port or the respective passageway.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: May 31, 2022
    Assignee: FLOWCO PRODUCTION SOLUTIONS, LLC
    Inventors: Mitchell A. Boyd, Garrett S. Boyd, David Robert Dahlgren
  • INTERNAL VALVE PLUNGER
    Publication number: 20210140285
    Abstract: A bypass plunger includes a plunger body that includes a head portion located at one end of the plunger body and a tail portion located at an opposite end of the plunger body. The head portion includes at least one flow port, and the tail portion includes at least one passageway. A valve component is disposed within an internal bore of the plunger body and is moveable between an open position and a closed position. At least one plug is located within a respective one of the flow ports and/or a respective one of the passageways, and is configured to reduce or prevent flow through the respective flow port or the respective passageway.
    Type: Application
    Filed: January 19, 2021
    Publication date: May 13, 2021
    Inventors: Mitchell A. Boyd, Garrett S. Boyd, David Robert Dahlgren
  • Internal valve plunger
    Patent number: 10927652
    Abstract: A bypass plunger includes a plunger body that includes a head portion located at one end of the plunger body and a tail portion located at an opposite end of the plunger body. The head portion includes at least one flow port, and the tail portion includes at least one passageway. A valve component is disposed within an internal bore of the plunger body and is moveable between an open position and a closed position. At least one plug is located within a respective one of the flow ports and/or a respective one of the passageways, and is configured to reduce or prevent flow through the respective flow port or the respective passageway.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: February 23, 2021
    Assignee: FLOWCO PRODUCTION SOLUTIONS, LLC
    Inventors: Mitchell A. Boyd, Garrett S. Boyd, David Robert Dahlgren
  • INTERNAL VALVE PLUNGER
    Publication number: 20200131892
    Abstract: A bypass plunger includes a plunger body that includes a head portion located at one end of the plunger body and a tail portion located at an opposite end of the plunger body. The head portion includes at least one flow port, and the tail portion includes at least one passageway. A valve component is disposed within an internal bore of the plunger body and is moveable between an open position and a closed position. At least one plug is located within a respective one of the flow ports and/or a respective one of the passageways, and is configured to reduce or prevent flow through the respective flow port or the respective passageway.
    Type: Application
    Filed: December 23, 2019
    Publication date: April 30, 2020
    Inventors: Mitchell A. Boyd, Garrett S. Boyd, David Robert Dahlgren
  • Internal valve plunger
    Patent number: 10550674
    Abstract: A bypass plunger includes a plunger body that includes a head portion located at one end of the plunger body and a tail portion located at an opposite end of the plunger body. The head portion includes at least one flow port, and the tail portion includes at least one passageway. A valve component is disposed within an internal bore of the plunger body and is movable between an open position and a closed position. At least one plug is located within a respective one of the flow ports and/or a respective one of the passageways, and is configured to reduce or prevent flow through the respective flow port or the respective passageway.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: February 4, 2020
    Assignee: FlowCo Production Solutions, LLC
    Inventors: Mitchell A. Boyd, Garrett S. Boyd, David Robert Dahlgren
  • INTERNAL VALVE PLUNGER
    Publication number: 20190277118
    Abstract: A bypass plunger includes a plunger body that includes a head portion located at one end of the plunger body and a tail portion located at an opposite end of the plunger body. The head portion includes at least one flow port, and the tail portion includes at least one passageway. A valve component is disposed within an internal bore of the plunger body and is movable between an open position and a closed position. At least one plug is located within a respective one of the flow ports and/or a respective one of the passageways, and is configured to reduce or prevent flow through the respective flow port or the respective passageway.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 12, 2019
    Inventors: Mitchell A. Boyd, Garrett S. Boyd, David Robert Dahlgren