Patents by Inventor JEONG LYUL PARK

JEONG LYUL PARK 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: 11788162
    Abstract: Disclosed are a method of manufacturing cage for a constant velocity joint and a cage for a constant velocity joint manufactured using the same for providing a cage having improved hardness, strength, and elongation while having a structure with a uniform core part and surface and for ensuring economic feasibility by reducing manufacturing time. The method includes a cutting operation of forming a structure having an outer shape by cutting a cylindrical pipe, forming an outer circumference of the cut structure to have a curved surface thereon, performing a turning operation on a surface of the formed structure, a punching operation of forming a window in the surface of the structure on which the turning operation is performed, a broaching operation of processing an edge of the window formed via punching, and a heat treatment operation of fully hardening the completely broached cage via austempering.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: October 17, 2023
    Assignees: SEOHAN INDUSTRY CO., LTD., KOREA FLANGE CO., LTD.
    Inventors: Jeong Lyul Park, Won Kew Ban, Hyo Jin Kim
  • Patent number: 11746394
    Abstract: A method for manufacturing a trunnion for a constant velocity joint, the trunnion having a plurality of journal units provided outside around a hub unit, the method including a first step of manufacturing the trunnion, a second step of thermally treating a rounded outer circumferential surface of the journal unit, and a third step of thermally treating a connection unit disposed between the journal unit and the hub unit and having a diameter smaller than that of the journal unit.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: September 5, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, SEOHAN INDUSTRY CO., LTD., KOREA FLANGE CO., LTD
    Inventors: Jeong Lyul Park, Wonkew Ban, Hyun Ho Yim, Chang-Gu Lee, Min-Gyu Kim
  • Publication number: 20220106660
    Abstract: A method for manufacturing a trunnion for a constant velocity joint, the trunnion having a plurality of journal units provided outside around a hub unit, the method including a first step of manufacturing the trunnion, a second step of thermally treating a rounded outer circumferential surface of the journal unit, and a third step of thermally treating a connection unit disposed between the journal unit and the hub unit and having a diameter smaller than that of the journal unit.
    Type: Application
    Filed: October 4, 2021
    Publication date: April 7, 2022
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, SEOHAN INDUSTRY CO., LTD., KOREA FLANGE CO., LTD
    Inventors: Jeong Lyul Park, Wonkew Ban, Hyun Ho Yim, Chang-Gu Lee, Min-Gyu Kim
  • Publication number: 20220056546
    Abstract: Disclosed are a method of manufacturing cage for a constant velocity joint and a cage for a constant velocity joint manufactured using the same for providing a cage having improved hardness, strength, and elongation while having a structure with a uniform core part and surface and for ensuring economic feasibility by reducing manufacturing time. The method includes a cutting operation of forming a structure having an outer shape by cutting a cylindrical pipe, forming an outer circumference of the cut structure to have a curved surface thereon, performing a turning operation on a surface of the formed structure, a punching operation of forming a window in the surface of the structure on which the turning operation is performed, a broaching operation of processing an edge of the window formed via punching, and a heat treatment operation of fully hardening the completely broached cage via austempering.
    Type: Application
    Filed: August 13, 2021
    Publication date: February 24, 2022
    Applicants: SEOHAN INDUSTRY CO., LTD., KOREA FLANGE CO., LTD.
    Inventors: Jeong Lyul PARK, Won Kew BAN, Hyo Jin KIM
  • Publication number: 20170305454
    Abstract: A telescopic shaft is provided.
    Type: Application
    Filed: April 6, 2017
    Publication date: October 26, 2017
    Applicants: SEOHAN INDUSTRY CO., LTD., KOREA FLANGE CO., LTD.
    Inventor: JEONG LYUL PARK