Patents by Inventor Kyoichi Yahagi

Kyoichi Yahagi 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).

  • Operational control method for cylindrical crusher
    Patent number: 4723716
    Abstract: An operational control method for a cylindrical crusher in which furnace slag is supplied to the cylindrical crusher through supply means and said furnace slag is crushed to obtain a furnace slag product, wherein particle size distribution and iron content ratio of a furnace slag product are detected and variable control of a supplying amount from the supply means and/or revolution speed of a cylindrical crusher is carried out within a predetermined range.
    Type: Grant
    Filed: September 17, 1986
    Date of Patent: February 9, 1988
    Assignees: Kawasaki Jukogyo Kabushiki Kaisha, Ishii Syogi, Ltd.
    Inventors: Tatsuo Hagiwara, Keiji Imai, Kyoichi Yahagi, Shigenori Nagaoka
  • Shell structure of heavy-load type rod mill
    Patent number: 4664321
    Abstract: A shell structure of a heavy-load type rod mill including a barrel having an outlet port and with a plate thickness of t.sub.1, and a pair of trunnions having journals integrally formed thereon and with a plate thickness of t.sub.2, which trunnions are welded to the barrel. At the weld joining the barrel and the trunnion, the relationship between the plate thickness t.sub.1 of the barrel and the plate thickness t.sub.2 of the trunnion is t.sub.1 .ltoreq.t.sub.2 .ltoreq.2t.sub.1.
    Type: Grant
    Filed: May 28, 1985
    Date of Patent: May 12, 1987
    Assignees: Kawasaki Jukogyo Kabushiki Kaisha, Ishii Syoji, Ltd.
    Inventors: Tatsuo Hagiwara, Keiji Imai, Shigenori Nagaoka, Shinji Kogumazaka, Kyoichi Yahagi, Takeshi Imagawa, Hidenaga Ishii, Toshitsugu Kikuchi
  • Liner for the outlet port of a rod mill
    Patent number: 4645133
    Abstract: A liner for the outlet port of a rod mill including a cylindrical body provided on the peripheral edge of an opening of the liner and projecting outwardly through the outlet port to prevent a rod from exiting the liner. The projecting length of the cylindrical body on the side close to the end portion of the barrel of the rod mill is preferably longer than that on the opposite side.
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: February 24, 1987
    Assignees: Kawasaki Jukogyo Kabushiki Kaisha, Ishii Syoji, Ltd.
    Inventors: Tatsuo Hagiwara, Keiji Imai, Shigenori Nagaoka, Shinji Kogumazaka, Kyoichi Yahagi, Takeshi Imagawa, Hidenaga Ishii, Toshitsugu Kikuchi