Patents Assigned to Kashiwara Machine Manufacturing Co., Ltd.
  • Apparatus for treating ends of large-diameter welded pipe
    Patent number: 4729502
    Abstract: A large-diameter welded steel pipe having a straight seam and tab plates attached to its ends as extensions of the seam is laid along a setting line with the seam upward. An apparatus for treating the ends of such a pipe has a tab plate cutting unit and a bead removing unit. The tab plate cutting unit cuts the tab plates off with a torch. The bead removing unit removes the weld beads on the inner surface of the ends of the pipe by cutting them with a rotary cutter.
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: March 8, 1988
    Assignees: Sumitomo Metal Industries, Ltd., Kashiwara Machine Manufacturing Co., Ltd.
    Inventors: Yoshitsuga Fukukawa, Atsushi Nishida, Mamoru Nishioka, Akio Takemori