Patents by Inventor Minoru Nakatsu

Minoru Nakatsu 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 re-using wires used once for mash seam welding
    Patent number: 5249725
    Abstract: The invention is related to an apparatus for re-using a copper wire having been used once for mash seam welding in a mash seam welder for mash seam welding a lap formed by overlapped opposite side edges of a metal sheet or like blank between upper and lower roller electrodes via copper wires. The apparatus is provided in a portion of or in relation to the mash seam welder for taking up the copper wire having been used once for welding and squeezed to have a substantially flat sectional profile as taken-up wire and feeding again the taken-up wire as rewound wire to the mash seam welder to be used again for welding between said upper and lower roller electrodes.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: October 5, 1993
    Assignee: N.P.W. Technical Laboratory Co.
    Inventor: Minoru Nakatsu