Patents by Inventor SUN DOO KIM

SUN DOO KIM 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).

  • Pilger die and pilger mandrel for manufacturing dashpot tube for nuclear fuel assembly and method of manufacturing the pilger die and the pilger mandrel
    Patent number: 8756966
    Abstract: A pilger die and a pilger mandrel which are used to produce a dashpot tube which can be used in a nuclear fuel assembly having an outer diameter of 31.75 mm or less and an inner diameter 25.654 mm or less, by processing a reduced expression zirconium alloy tube in two pilgering processes (a first step pass and a second step pass) using a single pilgering apparatus. Furthermore, provided are methods of manufacturing the pilger die and the pilger mandrel, and the dashpot tube for the nuclear fuel assembly. The dashpot tube can be manufactured by the single pilgering apparatus provided with the pilger die and the pilger mandrel.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: June 24, 2014
    Assignee: Kepco Nuclear Fuel Co., Ltd.
    Inventors: Sun Doo Kim, Chan Hyun Park, In Kyu Kim, Ki Bum Park, Seung Hwan Lee
  • PILGER DIE AND PILGER MANDREL FOR MANUFACTURING DASHPOT TUBE FOR NUCLEAR FUEL ASSEMBLY, METHOD OF MANUFACTURING THE PILGER DIE AND THE PILGER MANDREL, AND DASHPOT TUBE FOR NUCLEAR FUEL ASSEMBLY
    Publication number: 20120079864
    Abstract: A pilger die and a pilger mandrel which are used to produce a dashpot tube which can be used in a nuclear fuel assembly having an outer diameter of 31.75 mm or less and an inner diameter 25.654 mm or less, by processing a reduced expression zirconium alloy tube in two pilgering processes (a first step pass and a second step pass) using a single pilgering apparatus. Furthermore, provided are methods of manufacturing the pilger die and the pilger mandrel, and the dashpot tube for the nuclear fuel assembly. The dashpot tube can be manufactured by the single pilgering apparatus provided with the pilger die and the pilger mandrel.
    Type: Application
    Filed: May 27, 2011
    Publication date: April 5, 2012
    Inventors: SUN DOO KIM, Chan Huyn Park, In Kyu Kim, Ki Bum Park, Seung Hwan Lee