Patents by Inventor Kozo NITA

Kozo NITA 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).

  • Turbine blade
    Patent number: 10060265
    Abstract: The cooling effectiveness of a turbine blade that a gas turbine engine or the like is provided with is further increased by providing a convex portion that is arranged in the inner portion of a cooling air hole and that is provided projecting out from the inner wall surface of the cooling air hole.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: August 28, 2018
    Assignee: IHI CORPORATION
    Inventors: Kozo Nita, Yoji Okita, Chiyuki Nakamata, Kazuo Yonekura, Seiji Kubo, Osamu Watanabe
  • Turbine blade
    Patent number: 9759069
    Abstract: The present invention is a turbine blade (1) having a hollow blade body (2). This turbine blade (1) is provided with: cooling air holes (5) that penetrate the blade body (2) from an internal wall surface (2e) to an external wall surface (2f) thereof, and are provided with a straight tube portion (5a) that is located on the internal wall surface (2e) side of the blade body (2), and an expanded diameter portion (5b) that is located on the external wall surface (2f) side of the blade body (2); and with a guide groove (6) that is located on an internal wall of the expanded diameter portion (5b) and that guides cooling air (Y) in the expanded diameter portion (5).
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: September 12, 2017
    Assignee: IHI CORPORATION
    Inventors: Kozo Nita, Yoji Okita, Chiyuki Nakamata, Kazuo Yonekura, Seiji Kubo, Osamu Watanabe
  • TURBINE BLADE
    Publication number: 20140294598
    Abstract: The cooling effectiveness of a turbine blade that a gas turbine engine or the like is provided with is further increased by providing a convex portion that is arranged in the inner portion of a cooling air hole and that is provided projecting out from the inner wall surface of the cooling air hole.
    Type: Application
    Filed: June 11, 2014
    Publication date: October 2, 2014
    Inventors: Kozo NITA, Yoji OKITA, Chiyuki NAKAMATA, Kazuo YONEKURA, Seiji KUBO, Osamu WATANABE
  • TURBINE BLADE
    Publication number: 20140271229
    Abstract: The present invention is a turbine blade (1) having a hollow blade body (2). This turbine blade (1) is provided with: cooling air holes (5) that penetrate the blade body (2) from an internal wall surface (2e) to an external wall surface (2f) thereof, and are provided with a straight tube portion (5a) that is located on the internal wall surface (2e) side of the blade body (2), and an expanded diameter portion (5b) that is located on the external wall surface (2f) side of the blade body (2); and with a guide groove (6) that is located on an internal wall of the expanded diameter portion (5b) and that guides cooling air (Y) in the expanded diameter portion (5).
    Type: Application
    Filed: May 30, 2014
    Publication date: September 18, 2014
    Applicant: IHI Corporation
    Inventors: Kozo NITA, Yoji OKITA, Chiyuki NAKAMATA, Kazuo YONEKURA, Seiji KUBO, Osamu WATANABE