Patents by Inventor Tomotaka Ouchi

Tomotaka Ouchi 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).

  • Rotor of steam turbine, steam turbine, and method for fixing rotor blade
    Patent number: 11927114
    Abstract: A rotor of a steam turbine includes a plurality of rotor blades attached to a disk portion and a key configured to restrict movement of each of the plurality of rotor blades in an axial direction. The disk portion includes a blade embedding groove and a circumferential groove. The plurality of rotor blades include a first rotor blade and a second rotor blade adjacent to the first rotor blade on one side in a circumferential direction. A platform of the first rotor blade includes an access groove communicating with the circumferential groove, and a platform of the second rotor blade includes a second side surface facing a first side surface in the circumferential direction and a key accommodating groove communicating with the access groove in the circumferential direction. A key is arranged in the circumferential groove and the key accommodating groove.
    Type: Grant
    Filed: December 15, 2022
    Date of Patent: March 12, 2024
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventor: Tomotaka Ouchi
  • ROTOR OF STEAM TURBINE, STEAM TURBINE, AND METHOD FOR FIXING ROTOR BLADE
    Publication number: 20230193767
    Abstract: A rotor of a steam turbine includes a plurality of rotor blades attached to a disk portion and a key configured to restrict movement of each of the plurality of rotor blades in an axial direction. The disk portion includes a blade embedding groove and a circumferential groove. The plurality of rotor blades include a first rotor blade and a second rotor blade adjacent to the first rotor blade on one side in a circumferential direction. A platform of the first rotor blade includes an access groove communicating with the circumferential groove, and a platform of the second rotor blade includes a second side surface facing a first side surface in the circumferential direction and a key accommodating groove communicating with the access groove in the circumferential direction. A key is arranged in the circumferential groove and the key accommodating groove.
    Type: Application
    Filed: December 15, 2022
    Publication date: June 22, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventor: Tomotaka Ouchi