Patents by Inventor Shohachi Nishiuchi

Shohachi Nishiuchi 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).

  • Successive cold working process
    Patent number: 5007266
    Abstract: A billet is successively cold worked into a product such as a countershaft, an outer race for a constant-velocity joint, or the like by forming a chemically converted lubricating coating on a surface of the billet, forging the billet into an intermediate product at a temperature below a transformation temperature of the billet, covering a surface of said intermediate product with lubricating oil in a die cavity in a die assembly, and forging the intermdiate product at a temperature below the transformation temperature and before the intermediate product gains a predetermined hardness due to age hardening resulting from the first forging step.
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: April 16, 1991
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Shohachi Nishiuchi, Shigeo Ohta, Hitoshi Imai, Haruo Meguro