Patents by Inventor Syoichiro KAIHARA

Syoichiro KAIHARA 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 of welding shaft and wheel in turbine shaft, turbine shaft, and welding device
    Patent number: 10421154
    Abstract: Provided is a method of welding a shaft and a wheel in a turbine shaft. A target surface with a hole is provided to any one of the shaft and the wheel. An opposed surface is provided to the other one of the shaft and the wheel. The opposed surface includes an opposed portion opposed to the target surface, and a non-opposed portion formed continuously from the opposed portion toward a center side while facing onto the hole. The welding method includes: disposing the target surface and the opposed surface such that the they are opposed to each other while establishing a state of surface contact; and welding them by beam irradiation from outside in a radial direction of the shaft toward inside in the radial direction thereof based on a condition to cause a depth of fusion to reach a position on a center side beyond the opposed portion.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: September 24, 2019
    Assignee: IHI Corporation
    Inventors: Kenkichi Murata, Kosuke Watanabe, Koji Nezaki, Yuuichi Miura, Syoichiro Kaihara
  • METHOD OF WELDING SHAFT AND WHEEL IN TURBINE SHAFT, TURBINE SHAFT, AND WELDING DEVICE
    Publication number: 20160184930
    Abstract: Provided is a method of welding a shaft and a wheel in a turbine shaft. A target surface with a hole is provided to any one of the shaft and the wheel. An opposed surface is provided to the other one of the shaft and the wheel. The opposed surface includes an opposed portion opposed to the target surface, and a non-opposed portion formed continuously from the opposed portion toward a center side while facing onto the hole. The welding method includes: disposing the target surface and the opposed surface such that the they are opposed to each other while establishing a state of surface contact; and welding them by beam irradiation from outside in a radial direction of the shaft toward inside in the radial direction thereof based on a condition to cause a depth of fusion to reach a position on a center side beyond the opposed portion.
    Type: Application
    Filed: March 7, 2016
    Publication date: June 30, 2016
    Applicant: IHI Corporation
    Inventors: Kenkichi MURATA, Kosuke WATANABE, Koji NEZAKI, Yuuichi MIURA, Syoichiro KAIHARA