Patents by Inventor Yoshihiro Mutou

Yoshihiro Mutou 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).

  • Apparatus for jointing plate materials
    Patent number: 4569111
    Abstract: An apparatus for jointing plate materials comprises a punch, a die having a die hole for drawing a plurality of overlapping materials in cooperation with the punch. The peripheral wall of the die hole consist of a plurality of independent sections. The apparatus further comprises a base section for extending a drawn part of the materials along the radial direction of the punch in cooperation with the punch, and splits formed on the die for separating the sections from one another along the radial direction of the punch.
    Type: Grant
    Filed: October 7, 1983
    Date of Patent: February 11, 1986
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventor: Yoshihiro Mutou