Patents by Inventor Katsumi Tohno

Katsumi Tohno 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).

  • Self-running one-side welding facilities
    Patent number: 4061262
    Abstract: A one-side welding facility having means pushing up backing metals against the butting part of the welding edges is mounted on guiding rails which are attached by means of magnets to materials to be welded and suspended therefrom, the facility being self-running thereon by an electric motor included therein. A pair of front and rear links having a spring therebetween are provided on the facility to push up the backing metal against the butting part. Thus, well conditioned one-side welding is stably provided with ease.
    Type: Grant
    Filed: April 19, 1976
    Date of Patent: December 6, 1977
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Hirokazu Nomura, Katsumi Tohno, Tomio Takahashi