Patents by Inventor Hideki Nakaji

Hideki Nakaji 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 and apparatus for forge-shaping sheet members
    Patent number: 4356717
    Abstract: A method and apparatus for forge-shaping sheet-shaped members having upper and lower dies for pressing and forge-shaping a sheet-shaped material heated to a quenching temperature or an imperfectly quenching temperature set from a required hardness. The apparatus also includes cooling ducts for quenching the forge-shape material. The material is continuously quenched as it is kept pressed.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: November 2, 1982
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hiromu Okunishi, Hideki Nakaji, Hiroyuki Suwa, Hideaki Sato
  • Stainless steel brake disc structure
    Patent number: 4166521
    Abstract: A brake disk and process for producing the same which is particularly suitable for use on motorcycles. A stainless steel material of particular chromium content is subjected to a heat-treating and press-quenching step to form a brake disk having a sufficient hardness required for the function of a brake and being of favorable appearance for use on motorcycles.
    Type: Grant
    Filed: February 10, 1977
    Date of Patent: September 4, 1979
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hiromu Okunishi, Hideki Nakaji, Hiroyuki Suwa, Hideaki Sato
  • Brake disc and process for producing the same
    Patent number: 4126492
    Abstract: A brake disk and process for producing the same which is particularly suitable for use on motorcycles. A stainless steel material of particular chromium content is subjected to a heat-treating and press-quenching step to form a brake disk having a sufficient hardness required for the function of a brake and being of favorable appearance for use on motorcycles.
    Type: Grant
    Filed: September 13, 1977
    Date of Patent: November 21, 1978
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hiromu Okunishi, Hideki Nakaji, Hiroyuki Suwa, Hideaki Sato
  • Method and apparatus for shaping integrally-shaped type brake disks for cars
    Patent number: 4112732
    Abstract: An apparatus and method for forming an integrally-shaped brake disk for a vehicle. The method comprises heating the brake disk material, and maintaining the material heated while it is inserted between upper and lower dies of the apparatus. The central and outer peripheral portions of the material are pressed and held. The intermediate portion between the central and outer peripheral portions is drawn and shaped by relative motion between the dies. The material is continuously quenched while it is maintained pressed and held.
    Type: Grant
    Filed: April 20, 1977
    Date of Patent: September 12, 1978
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hiromu Okunishi, Hideki Nakaji, Hiroyuki Suwa, Hideaki Sato