Patents by Inventor Geoff Legg

Geoff Legg 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).

  • Turboexpander labyrinth seal
    Patent number: 12241552
    Abstract: There is disclosed a labyrinth seal arrangement for gas turboexpanders and the like which reduces process gas losses. The labyrinth seal includes a plurality of axially spaced seal sets with teeth facing a seal member. A plurality of vent ports in between each seal set permits extraction of gradually lower pressure process gas.
    Type: Grant
    Filed: May 8, 2023
    Date of Patent: March 4, 2025
    Assignee: ACD, LLC
    Inventors: Duane Bergmann, John Park, Asit Singhal, Geoff Legg
  • TURBOEXPANDER LABYRINTH SEAL
    Publication number: 20230272856
    Abstract: There is disclosed a labyrinth seal arrangement for gas turboexpanders and the like which reduces process gas losses. The labyrinth seal includes a plurality of axially spaced seal sets with teeth facing a seal member. A plurality of vent ports in between each seal set permits extraction of gradually lower pressure process gas.
    Type: Application
    Filed: May 8, 2023
    Publication date: August 31, 2023
    Inventors: Duane Bergmann, John Park, Asit Singhal, Geoff Legg
  • Turboexpander labyrinth seal
    Patent number: 11686390
    Abstract: There is disclosed a labyrinth seal arrangement for gas turboexpanders and the like which reduces process gas losses. The labyrinth seal includes a plurality of axially spaced seal sets with teeth facing a seal member. A plurality of vent ports in between each seal set permits extraction of gradually lower pressure process gas.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: June 27, 2023
    Assignee: ACD, LLC
    Inventors: Duane Bergmann, John Park, Asit Singhal, Geoff Legg
  • TURBOEXPANDER LABYRINTH SEAL
    Publication number: 20200200273
    Abstract: There is disclosed a labyrinth seal arrangement for gas turboexpanders and the like which reduces process gas losses. The labyrinth seal includes a plurality of axially spaced seal sets with teeth facing a seal member. A plurality of vent ports in between each seal set permits extraction of gradually lower pressure process gas.
    Type: Application
    Filed: December 23, 2019
    Publication date: June 25, 2020
    Inventors: Duane Bergmann, John Park, Asit Singhal, Geoff Legg