Patents by Inventor Ryuichi Etoh

Ryuichi Etoh 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).

  • Non-consumable electrode welding torch and welding head with the torch
    Patent number: 7205500
    Abstract: An ultra-flat non-consumable electrode welding torch which allows performing a welding operation through a narrow gap between adjacent piping such as welding piping of a boiler panel, to be mounted on a compact automatic welding head, and a welding head provided with such a welding torch are to be provided. As a gas supply mechanism that supplies a shield gas to a welding section formed at the tip of the non-consumable electrode through inside of the torch body for the non-consumable electrode welding, a gas supply path is provided for supplying the shield gas from an outer gas space in a double ring shaped gas space provided around a non-consumable electrode and divided by a partition wall, to an inner gas space through a plurality of orifices provided at regular intervals in the partition wall, and the gas is blown from the inner gas space to the region around the non-consumable electrode through a metal mesh plate.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: April 17, 2007
    Assignee: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Hiroshi Watanabe, Takashi Sato, Toshiharu Myoga, Koichi Mitsuhata, Masahiro Kanatani, Keiji Ueda, Seiji Kikuhara, Toshiharu Nagashima, Shigeru Fujimoto, Ryuichi Etoh
  • Non-consumable electrode welding torch and welding head with the torch
    Publication number: 20060076320
    Abstract: An ultra-flat non-consumable electrode welding torch which allows performing a welding operation through a narrow gap between adjacent piping such as welding piping of a boiler panel, to be mounted on a compact automatic welding head, and a welding head provided with such a welding torch are to be provided. As a gas supply mechanism that supplies a shield gas to a welding section formed at the tip of the non-consumable electrode through inside of the torch body for the non-consumable electrode welding, a gas supply path is provided for supplying the shield gas from an outer gas space in a double ring shaped gas space provided around a non-consumable electrode and divided by a partition wall, to an inner gas space through a plurality of orifices provided at regular intervals in the partition wall, and the gas is blown from the inner gas space to the region around the non-consumable electrode through a metal mesh plate.
    Type: Application
    Filed: September 14, 2005
    Publication date: April 13, 2006
    Applicant: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Hiroshi Watanabe, Takashi Sato, Toshiharu Myoga, Koichi Mitsuhata, Masahiro Kanatani, Keiji Ueda, Seiji Kikuhara, Toshiharu Nagashima, Shigeru Fujimoto, Ryuichi Etoh