Patents by Inventor Sam Sub BYUN

Sam Sub BYUN 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).

  • Publication number: 20250073800
    Abstract: The present invention relates to a method for repairing a wide crack in a hot gas path part for a gas turbine using brazing, the method including the steps of removing oxides from the inside of the wide crack of the hot gas path part, filling base metal powder and a filler into the wide crack from which the oxides have been removed, and bonding the wide crack by means of the br
    Type: Application
    Filed: July 19, 2024
    Publication date: March 6, 2025
    Inventors: Hyun Ki KANG, Sam Sub BYUN, Jong Yeob LEE, Jae Wha SON, Taek Ho CHUNG
  • Publication number: 20250033117
    Abstract: The present invention relates to a method for repairing a tooth of a labyrinth seal using 3D printing, the labyrinth seal consisting of an arch-shaped body and teeth protruding from the inner surface as one surface of the arch-shaped body, the method including the steps of: removing a damaged tooth from the body of the labyrinth seal; depositing a tooth onto the body by means of the 3D printing; and adjusting the surface roughness of the deposited tooth by means of machining.
    Type: Application
    Filed: July 19, 2024
    Publication date: January 30, 2025
    Inventors: Hyun Ki KANG, Sam Sub BYUN, Jong Yeob LEE, Jae Wha SON
  • Patent number: 12209500
    Abstract: The present invention relates to a method for manufacturing a labyrinth seal using wire arc additive manufacturing, which is mounted between a diaphragm of a turbine and a turbine rotor to induce a smooth rotation of the turbine rotor and preventing gas leakage by minimizing friction between the diaphragm of a turbine and a turbine rotor when a rotating body such as the turbine rotor rotates inside a fixed body such as the diaphragm, and which includes a ring-shaped body part and a tooth part protruding on one side of the ring-shaped body part, wherein the labyrinth seal is deposition-manufactured by 3D printing, the body part is manufactured by the wire arc additive manufacturing, and the tooth part is manufactured by a directed energy deposition.
    Type: Grant
    Filed: December 21, 2023
    Date of Patent: January 28, 2025
    Assignee: TURBO POWERTECH CO., LTD.
    Inventors: Hyun Ki Kang, Sam Sub Byun, Jong Yeob Lee, Jae Wha Son, Taek Ho Chung
  • Publication number: 20240410290
    Abstract: The present invention relates to a method for manufacturing a labyrinth seal using wire arc additive manufacturing, which is mounted between a diaphragm of a turbine and a turbine rotor to induce a smooth rotation of the turbine rotor and preventing gas leakage by minimizing friction between the diaphragm of a turbine and a turbine rotor when a rotating body such as the turbine rotor rotates inside a fixed body such as the diaphragm, and which includes a ring-shaped body part and a tooth part protruding on one side of the ring-shaped body part, wherein the labyrinth seal is deposition-manufactured by 3D printing, the body part is manufactured by the wire arc additive manufacturing, and the tooth part is manufactured by a directed energy deposition.
    Type: Application
    Filed: December 21, 2023
    Publication date: December 12, 2024
    Inventors: Hyun Ki KANG, Sam Sub BYUN, Jong Yeob LEE, Jae Wha SON, Taek Ho CHUNG
  • Publication number: 20240183286
    Abstract: The present invention relates to a method for manufacturing a gas turbine rotor heat shielding segment, which is mounted on a rotor outer wall between a compressor and a turbine and shields the leakage of heat and gas so that gas of high-temperature and high-pressure is not transferred from a burner of a gas turbine to a rotor shaft during the operation of the gas turbine, and more specifically, to a method for manufacturing a gas turbine rotor heat shielding segment by three-dimensional printing, wherein a portion having a simplified shape is manufactured by casting, and a portion having a complex shape is manufactured by 3D printing.
    Type: Application
    Filed: September 22, 2023
    Publication date: June 6, 2024
    Inventors: Hyun Ki Kang, Taek Ho CHUNG, Sam Sub BYUN, Jong Yeob LEE, Jae Wha SON, Kyeong Seung SHIN, Gi Joo YANG
  • Publication number: 20240139808
    Abstract: The present invention relates to a method for manufacturing a labyrinth seal for a turbine through the additive manufacturing of martensitic stainless steel using 3D printing, the method including the steps of: making a ring-shaped body of the labyrinth seal by means of centrifugal casting or a ring mill and a labyrinth part protruding from one surface of the ring-shaped body of the labyrinth seal by means of the 3D printing; and depositing a bonding layer onto top of the ring-shaped body to improve a bonding force between the ring-shaped body and the labyrinth part, the bonding layer having a composition similar to the composition of the metal powder or metal wire used in the 3D printing.
    Type: Application
    Filed: July 17, 2023
    Publication date: May 2, 2024
    Inventors: Hyun Ki KANG, Sam Sub BYUN, Taek Ho CHUNG
  • Publication number: 20240117749
    Abstract: A method of manufacturing a labyrinth sealing device mounted between a diaphragm and a turbine rotor of a turbine to induce smooth rotation of the turbine rotor and prevent a leakage of gas by minimizing friction is presented. A labyrinth sealing device includes a ring-shaped body and a labyrinth part protruding from one surface of the ring-shaped body. The ring-shaped body is manufactured by centrifugal casting or ring mill, and the labyrinth part is manufactured by 3D printing.
    Type: Application
    Filed: February 3, 2023
    Publication date: April 11, 2024
    Inventors: Hyun Ki KANG, Taek Ho CHUNG, Sam Sub BYUN