Patents by Inventor Masao Nitanda

Masao Nitanda 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).

  • Roll for rolling mill
    Patent number: 5001820
    Abstract: Axially extending liquid-tight tapered spaces are defined in the barrel of a roll body. Tapered pistons are fitted in the spaces for engagement and disengagement with a bore inner surface defining the tapered spaces. A liquid under pressure is supplied through liquid passages to some of liquid pressure chambers at opposite ends of the tapered pistons so that the barrel of the roll body is increased or decreased in diameter. When the rolling forces are removed from the roll body, the roll body returns to its initial straight state.
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: March 26, 1991
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Masujiro Yoshida, Masao Nitanda, Heiji Kato, Isao Imai, Tsukasa Oyauchi
  • Rolling roll with variable profile and of the tapered piston type
    Patent number: 4837906
    Abstract: Longitudinal axial positions in a roll longitudinal axis of ring pistons fitted into a profile-variable rolling roll are detected with a higher degree of accuracy. In response to outputs representative of the detected longitudinal axial positions of the ring pistons, the positions of the ring pistons can be controlled with a high degree of accuracy, whereby controllability of shape of the rolling roll is enhanced.
    Type: Grant
    Filed: April 5, 1988
    Date of Patent: June 13, 1989
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Takaaki Mori, Kinichi Higuchi, Tsukasa Oyauchi, Masao Nitanda, Kohei Hosoi, Isao Imai, Heiji Kato, Mitsuhiko Ichikawa