Patents by Inventor Yeung-Jo Lee

Yeung-Jo Lee 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: 10480898
    Abstract: A low-shock separation device is characterized in that an internal locking structure is unlocked and a bolt is separated by operating a specific part of components thereof using high pressure that is generated by combustion of powder.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: November 19, 2019
    Assignee: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Dong-Jin Kim, Zaeill Kim, Nam-Choon Kim, Yeung-Jo Lee, Jeong-Min Cha
  • Publication number: 20190249951
    Abstract: A low-shock separation device is characterized in that an internal locking structure is unlocked and a bolt is separated by operating a specific part of components thereof using high pressure that is generated by combustion of powder.
    Type: Application
    Filed: February 12, 2018
    Publication date: August 15, 2019
    Inventors: Dong-Jin KIM, ZAEILL KIM, Nam-Choon KIM, Yeung-Jo LEE, Jeong-Min Cha
  • Publication number: 20060027083
    Abstract: An explosive bolt includes: a bolt body forming a receiving space therein; a pressure transmitting means received in the receiving space of the bolt body; a pressure generating means connected to the pressure transmitting means and generating pressure; and a cut portion formed at the bolt body and cut upon receiving pressure generated from the pressure generating means through the pressure transmitting means. Accordingly, the amount of gunpowder used is minimized, and a position of a cut portion can be freely designed and fixed, thereby not only minimizing explosion impact and noise but also improving productivity and reliability.
    Type: Application
    Filed: December 28, 2004
    Publication date: February 9, 2006
    Applicant: Agency for Defense Development
    Inventors: Yeung-Jo Lee, Chang-Sun Choi, Dong-Jin Kim