Patents by Inventor Yuichiro Nomura

Yuichiro Nomura 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).

  • Water jet peening device
    Patent number: 10376942
    Abstract: A water jet peening device includes a sealed vessel provided to cover a surface of a welded portion, and adapted to be in a sealed state where an internal pressure is higher than an outside, a jet nozzle adapted to jet high-pressure water to create a cavitation bubble toward the surface of the welded portion, inside the sealed vessel, and a pressure control hole adapted to be able to adjust the internal pressure of the sealed vessel. The water jet peening device can efficiently reform a tensile residual stress on the surface of the welded portion to a compressive residual stress.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: August 13, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Takaharu Maeguchi, Yuichiro Nomura, Kazuya Tsutsumi, Nobuyuki Hori
  • WATER JET PEENING DEVICE
    Publication number: 20160361746
    Abstract: A water jet peening device includes a sealed vessel provided to cover a surface of a welded portion, and adapted to be in a sealed state where an internal pressure is higher than an outside, a jet nozzle adapted to jet high-pressure water to create a cavitation bubble toward the surface of the welded portion, inside the sealed vessel, and a pressure control hole adapted to be able to adjust the internal pressure of the sealed vessel. The water jet peening device can efficiently reform a tensile residual stress on the surface of the welded portion to a compressive residual stress.
    Type: Application
    Filed: January 16, 2015
    Publication date: December 15, 2016
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Takaharu Maeguchi, Yuichiro Nomura, Kazuya Tsutsumi, Nobuyuki Hori