Patents by Inventor Masayuki HIRAISHI

Masayuki HIRAISHI 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).

  • Wind turbine blade and wind turbine power generating apparatus
    Patent number: 11619205
    Abstract: A wind turbine blade includes: a metal receptor including a blade tip of the wind turbine blade; and a blade body portion connected to the metal receptor so as to be positioned on a blade-root side of the metal receptor, the blade body portion having a hollow structure and forming an airfoil shape in a blade tip region of the wind turbine blade with the metal receptor in a joint region to the metal receptor. As seen in a blade-thickness direction of the wind turbine blade, a tangent to a joint line between the metal receptor and the blade body portion at an intersection between the joint line and a leading edge of the wind turbine blade is inclined from a chordwise direction of the wind turbine blade.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: April 4, 2023
    Assignee: Vestas Wind Systems A/S
    Inventors: Kenji Sato, Masayuki Hiraishi
  • Wind turbine blade, wind turbine rotor, and wind turbine power generating apparatus
    Patent number: 11220998
    Abstract: A wind turbine blade includes: a blade body portion; and an anti-erosion layer disposed so as to cover a surface of the blade body portion partially. A center point of the anti-erosion layer in a circumferential length direction along a blade profile in a cross section orthogonal to a blade spanwise direction is shifted toward a pressure side from a leading edge of the blade body portion, at least in a part of an extension range of the anti-erosion layer in the blade spanwise direction.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: January 11, 2022
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Hideyasu Fujioka, Masayuki Hiraishi
  • WIND TURBINE BLADE AND WIND TURBINE POWER GENERATING APPARATUS
    Publication number: 20210332788
    Abstract: A wind turbine blade includes: a metal receptor including a blade tip of the wind turbine blade; and a blade body portion connected to the metal receptor so as to be positioned on a blade-root side of the metal receptor, the blade body portion having a hollow structure and forming an airfoil shape in a blade tip region of the wind turbine blade with the metal receptor in a joint region to the metal receptor. As seen in a blade-thickness direction of the wind turbine blade, a tangent to a joint line between the metal receptor and the blade body portion at an intersection between the joint line and a leading edge of the wind turbine blade is inclined from a chordwise direction of the wind turbine blade.
    Type: Application
    Filed: April 26, 2017
    Publication date: October 28, 2021
    Inventors: Kenji SATO, Masayuki HIRAISHI
  • WIND TURBINE BLADE, WIND TURBINE ROTOR, AND WIND TURBINE POWER GENERATING APPARATUS
    Publication number: 20200011300
    Abstract: A wind turbine blade includes: a blade body portion; and an anti-erosion layer disposed so as to cover a surface of the blade body portion partially. A center point of the anti-erosion layer in a circumferential length direction along a blade profile in a cross section orthogonal to a blade spanwise direction is shifted toward a pressure side from a leading edge of the blade body portion, at least in a part of an extension range of the anti-erosion layer in the blade spanwise direction.
    Type: Application
    Filed: March 21, 2017
    Publication date: January 9, 2020
    Inventors: Hideyasu FUJIOKA, Masayuki HIRAISHI