Patents by Inventor Atsuo Unozawa

Atsuo Unozawa 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).

  • Method for making a cutting element for use in a rotary cutting tool
    Patent number: 5036732
    Abstract: The inner peripheral portion of the blade material is made thinner than the outer peripheral portion thereof. This serves to make greater, as compared with conventional cutter bodies, the distance between the adjacent portions of the cutter body where the respective inner peripheral portions of the blade material are adapted to rest, thus enabling the rigidity of the cutting tool itself to be improved. On top of this, the rake face of the blade material can be re-ground, when necessary, until the material is completely used up and worn away, thus making it possible to make full and efficient use of the blade material without any waste.
    Type: Grant
    Filed: April 5, 1990
    Date of Patent: August 6, 1991
    Inventor: Atsuo Unozawa
  • Rotary cutting tool
    Patent number: 4983078
    Abstract: The inner peripheral portion of the blade material is made thinner than the outer peripheral portion thereof. This serves to make greater, as compared with conventional cutter bodies, the distance between the adjacent portions of the cutter body where the respective inner peripheral portions of the blade material are adapted to rest, thus enabling the rigidity of the cutting tool itself to be improved. On top of this, the rake face of the blade material can be reground, when necessary, until the material is completely used up and worn away, thus making it possible to make full and efficient use of the blade material without any waste.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: January 8, 1991
    Inventor: Atsuo Unozawa