Patents by Inventor Tatsunobu Kobayashi

Tatsunobu Kobayashi 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 mill
    Patent number: 4817410
    Abstract: A roll for a mill includes a roll shaft having a tapered portion disposed intermediate opposite ends thereof. The tapered portion has an outer peripheral surface tapering axially of the roll shaft. A ring of a wear-resistant material is disposed around the tapered portion of the roll shaft. A tubular sleeve having an inner peripheral surface tapering axially thereof is press-fitted between the tapered portion of the roll shaft and the ring to retain the ring in place on the roll shaft for rotation therewith. The sleeve includes an inner groove formed in the inner peripheral surface thereof and a passageway formed therethrough. The passageway is communicated with the inner groove so that pressurized oil is supplied through the passageway into the inner groove.
    Type: Grant
    Filed: June 4, 1987
    Date of Patent: April 4, 1989
    Assignees: Mitsubishi Kinzoku Kabushiki Kaisha, Nippon Steel Corporation
    Inventors: Takashi Yatsuzuka, Tetsuya Ohba, Kouji Tanabe, Tatsuo Kojima, Tatsunobu Kobayashi, Kouki Katou