Patents by Inventor Kenjiro Shibuya

Kenjiro Shibuya 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).

  • Method for gas shielded arc welding with direct current non-consumable electrode
    Patent number: 4532409
    Abstract: A gas shielded arc welding method in which a non-consumable electrode and a filler wire are respectively connected to independent DC power sources and the non-consumable electrode is located in a preceding position, feeding the filler wire from behind the electrode. The non-consumable electrode is held in a forwardly tilted position to form an angle smaller than 85.degree. with a workpiece, and the non-consumable electrode and filler wire are applied with inverse electric currents to thereby control the arc direction for formation of sound joints. A welding apparatus is also disclosed which is capable of effecting arc extension control and oscillation simultaneously.
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: July 30, 1985
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Yohji Ogata, Isao Aida, Hirokazu Murayama, Kenjiro Shibuya