Patents by Inventor Risaburo Yamashita

Risaburo Yamashita 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).

  • Automatic cutter positioning device for a gang slitter
    Patent number: 4252044
    Abstract: An automatic cutter positioning device in a gang slitter consisting of a frame assembly having an upper frame including rails, a lower frame including rails, and side frames. Cutter heads are slidably mounted to the upper and lower rails. Cutter shaft journalling cases are vertically slidably mounted on each cutter head. Spline shafts journalled by the side frames provide driving force to the cutter shafts through gears and belts. The cutter heads are moved so that the forward head moves faster then the rearward head.
    Type: Grant
    Filed: February 15, 1979
    Date of Patent: February 24, 1981
    Assignee: Sumikura Industrial Company, Limited
    Inventors: Risaburo Yamashita, Toshiyuki Muramatu