Patents by Inventor Sung Jong Choi

Sung Jong Choi 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).

  • Friction stir welding (FSW) tool with adjustable probe length and shoulder groove depth
    Patent number: 11453083
    Abstract: Disclosed is a friction stir welding tool with an adjustable probe length and shoulder groove depth, wherein a support shaft, made of a material having low thermal conductivity so as to inhibit thermal conduction between a probe and a shank, is coupled to the center of an upper locking member together with the shank, the probe and inner and outer shoulders are coupled inside a lower part of the upper locking member, and a lower locking member is fastened and fixed to the lower part of the upper locking member, and a washer and a locking nut are fastened to an upper part of the lower locking member, whereby the locking nut pushes the lower locking member via the washer.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: September 27, 2022
    Assignee: ANDONG NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Sung Jong Choi, Ho Chan Kim
  • Friction stir welding (FSW) tool with adjustable probe length and shoulder groove depth
    Patent number: 11407059
    Abstract: Disclosed is a friction stir welding tool with an adjustable probe length and shoulder groove depth, wherein a support shaft, made of a material having low thermal conductivity so as to inhibit thermal conduction between a probe and a shank, is coupled to the center of an upper locking member together with the shank, the probe and inner and outer shoulders are coupled inside a lower part of the upper locking member, and a lower locking member is fastened and fixed to the lower part of the upper locking member, and a washer and a locking nut are fastened to an upper part of the lower locking member, whereby the locking nut pushes the lower locking member via the washer.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: August 9, 2022
    Assignee: ANDONG NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Sung Jong Choi, Ho Chan Kim
  • FRICTION STIR WELDING (FSW) TOOL WITH ADJUSTABLE PROBE LENGTH AND SHOULDER GROOVE DEPTH
    Publication number: 20210402505
    Abstract: Disclosed is a friction stir welding tool with an adjustable probe length and shoulder groove depth, wherein a support shaft, made of a material having low thermal conductivity so as to inhibit thermal conduction between a probe and a shank, is coupled to the center of an upper locking member together with the shank, the probe and inner and outer shoulders are coupled inside a lower part of the upper locking member, and a lower locking member is fastened and fixed to the lower part of the upper locking member, and a washer and a locking nut are fastened to an upper part of the lower locking member, whereby the locking nut pushes the lower locking member via the washer.
    Type: Application
    Filed: February 10, 2021
    Publication date: December 30, 2021
    Inventors: Sung Jong Choi, Ho Chan Kim