Patents by Inventor Tsugio Shiomi

Tsugio Shiomi 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).

  • Patent number: 6038758
    Abstract: A spinning ring for a ring spinning machine is produced by clamping and pressing a ring-like steel blank by a mandrel and a forming roll, pressing and deforming the blank by cold rolling, causing the blank to fluidize in, and fill, the gap between both machining surfaces of the forming roll and the mandrel, and rolling the blank in the direction of thickness and so expanding its diameter into a predetermined size. To prevent crack, a ring-like blank whose portion having a large machining quantity is in advance machined to a smaller thickness by machining means such as forging, cutting and rolling is preferably used. Since this production method does not essentially remove the material, the yield of the material is high, and because the number of production steps is less, the production cost can be reduced.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: March 21, 2000
    Assignee: Kanai Juyo Kogyo Co., Ltd.
    Inventors: Hiroaki Kanai, Kiyohide Yagyu, Akira Maruta, Kouji Sasahara, Tsugio Shiomi