Patents by Inventor Ayumi MAMADA

Ayumi MAMADA 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: 10024167
    Abstract: A turbine blade has a profile including a blade suction side line, a blade pressure side line, and a blade trailing edge positioned between the rear ends of the blade suction side and pressure sidelines. The blade trailing edge of the profile is formed by connecting a pressure side arc-like curve having a constant radius of curvature and extending from the rear end of the blade pressure side line toward the camber line of the profile, and a suction side line portion which extends from the rear end of the blade suction side line toward the camber line while passing through a region closer to the camber line than a symmetric curve portion which is line-symmetric to the pressure side arc-like curve with respect to the camber line. The suction side line portion is represented by curves constituting ellipses which constitute ellipses, and a straight line.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: July 17, 2018
    Assignee: IHI CORPORATION
    Inventors: Masaaki Hamabe, Ayumi Mamada, Ruriko Yamawaki, Hiroshi Hamazaki, Akira Takahashi
  • Turbine blade
    Patent number: 9371734
    Abstract: A turbine blade has a profile including a blade suction side line, a blade pressure side line, and a blade trailing edge formed by a curve connecting the rear ends of the blade suction side and pressure side lines to each other, wherein the curve forming the blade trailing edge of the profile is formed by connecting a pressure side curve portion which has an arc shape having a constant radius of curvature and extending from the rear end of the blade pressure side line toward the camber line of the profile, and a suction side curve portion which extends from the rear end of the blade suction side line toward the camber line while passing through a region closer to the camber line than a symmetric curve portion which is line-symmetric to the pressure side curve portion with respect to the camber line.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: June 21, 2016
    Assignee: IHI CORPORATION
    Inventors: Masaaki Hamabe, Ayumi Mamada, Ruriko Yamawaki, Hiroshi Hamazaki
  • TURBINE BLADE
    Publication number: 20150233253
    Abstract: A turbine blade has a profile including a blade suction side line, a blade pressure side line, and a blade trailing edge positioned between the rear ends of the blade suction side and pressure sidelines. The blade trailing edge of the profile is formed by connecting a pressure side arc-like curve having a constant radius of curvature and extending from the rear end of the blade pressure side line toward the camber line of the profile, and a suction side line portion which extends from the rear end of the blade suction side line toward the camber line while passing through a region closer to the camber line than a symmetric curve portion which is line-symmetric to the pressure side arc-like curve with respect to the camber line. The suction side line portion is represented by curves constituting ellipses which constitute ellipses, and a straight line.
    Type: Application
    Filed: April 30, 2015
    Publication date: August 20, 2015
    Applicant: IHI CORPORATION
    Inventors: Masaaki HAMABE, Ayumi MAMADA, Ruriko YAMAWAKI, Hiroshi HAMAZAKI, Akira TAKAHASHI
  • TURBINE BLADE
    Publication number: 20140112795
    Abstract: A turbine blade has a profile including a blade suction side line, a blade pressure side line, and a blade trailing edge formed by a curve connecting the rear ends of the blade suction side and pressure side lines to each other, wherein the curve forming the blade trailing edge of the profile is formed by connecting a pressure side curve portion which has an arc shape having a constant radius of curvature and extending from the rear end of the blade pressure side line toward the camber line of the profile, and a suction side curve portion which extends from the rear end of the blade suction side line toward the camber line while passing through a region closer to the camber line than a symmetric curve portion which is line-symmetric to the pressure side curve portion with respect to the camber line.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 24, 2014
    Applicant: IHI CORPORATION
    Inventors: Masaaki HAMABE, Ayumi MAMADA, Ruriko YAMAWAKI, Hiroshi HAMAZAKI