Patents by Inventor Motoshiro Hirato

Motoshiro Hirato 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 and process for the fluid lubrication drawing of composite metal wires
    Patent number: 4270373
    Abstract: A rod in the form of a composite metal wire having a harder metal core surrounded by a softer metal cladding is introduced together with lubricant into a die comprising an approach which includes a first frustoconical opening defining a vertical angle between 0.degree. and 5.degree. (exclusive of 0.degree.) and a second frustoconical opening defining a vertical angle between 6.degree. and 20.degree.. The lubricant is pressurized in the first frustoconical opening of the die approach while the rod is drawn under fluid lubrication.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: June 2, 1981
    Inventors: Motoshiro Hirato, Hazime Kawagoe, Kazuo Abe, Tsuyoshi Sato, Yasuhiko Miyake, Masahiro Nagai, Katsuhisa Furuichi, Kiyoshi Shimojima