Patents Assigned to Nippon Bulge Industries, Ltd.
  • Die-lateral extruding method and apparatus
    Patent number: 5475999
    Abstract: An axially non-symmetric article is forged by the first upsetting by means of the first and second punches and by the second die-lateral extruding of a metal bar stock which is extruded via an orifice into an extension space(s) which has a greater cross section than the orifice.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: December 19, 1995
    Assignees: The Japan Steel Works, Ltd., Nippon Bulge Industries, Ltd., Showa Denko K.K.
    Inventors: Tsunehisa Sekiguchi, Kenji Iwata, Shigeyuki Koide