Patents by Inventor Koshiro Aoyagi

Koshiro Aoyagi 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: 4685319
    Abstract: Rolling method and apparatus for forming sections having a flange connected to a web. Between two optional steps of roughing, intermediate rolling, and finishing steps, rolls 15, 15', 16, and 16' are arranged to expand the web in the widthwise direction. The rolls 15, 15', 16, and 16' fall in contact with the inner sides 21 and 22 of flanges. The rolls 15, 15', 16, and 16' may be engaged with the upper and lower faces of the web. The axes of the rolls 15, 15', 16, and 16' may be inclined at a predetermined angle .theta.h in a direction horizontally rectangular to the rolling direction. It is preferred that the axes of the rolls 15, 15', 16, and 16' be vertically inclined at an angle .theta.v to the horizontal plane.
    Type: Grant
    Filed: January 2, 1985
    Date of Patent: August 11, 1987
    Assignee: Nippon Steel Corporation
    Inventors: Koshiro Aoyagi, Taneharu Nishino, Kenji Betsuki
  • Patent number: 4528834
    Abstract: Bars and wire rods are rolled from billets or blooms in the disclosed process which includes a primary rolling step resulting in an intermediate material, a secondary rolling step and a heat treatment. The primary (first) rolling step includes rolling the billet or bloom steel material into an intermediate material at a mass flow rate to enable it to be maintained during the primary rolling within a temperature range corresponding to a predetermined deformation resistance level of the steel material. This predetermined deformation resistance level is selected so as to take advantage of an opportunity to save energy. The intermediate material resulting from primary rolling is coiled and its temperature is adjusted so as to maintain the intermediate material at a desired starting temperature for the secondary rolling step.
    Type: Grant
    Filed: April 13, 1984
    Date of Patent: July 16, 1985
    Assignee: Nippon Steel Corporation
    Inventors: Koshiro Aoyagi, Yukio Noguchi, Koe Nakajima, Matsuo Ataka
  • Patent number: 4074557
    Abstract: A metal extrusion process with high reduction wherein a metal blank is extruded from a container through an opening which is formed by a plurality of work rolls. The metal blank is guided to the opening from the outlet of the container by causing the metal blank to adapt to the shape of the opening by means of a forming die so that the metal blank does not overfill the opening. This extrusion process is capable of forming the metal blank into a product having the desired cross section with high elongation in one pass and also the radius of curvature of the corner portion of the product can be freely adjusted.
    Type: Grant
    Filed: October 27, 1976
    Date of Patent: February 21, 1978
    Assignee: Nippon Steel Corporation
    Inventors: Samon Yanagimoto, Koshiro Aoyagi, Susumu Mizunuma, Kouki Nambu