Patents by Inventor Michinobu Ito

Michinobu Ito 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).

  • Throwaway tip
    Patent number: 4273480
    Abstract: A throwaway tip for use in a lathe cutting tool. The tip has a cutting edge along the outer periphery and a succession of recesses are formed on the cutting surface. The recesses form a chip curling and cutting mechanism irrespective of the driving direction of the tip. The recesses may be of uniform diameter or preferably increase toward the center of the cutting edge line. The recesses may also be bevelled to facilitate entry and cutting of the chips.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: June 16, 1981
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Makoto Shirai, Michinobu Ito, Osamu Kato