Patents Assigned to TECHNOLOGY OF NATURAL PROVIDENCE, INC
  • Blade, wind turbine and wind power generating system
    Patent number: 9797373
    Abstract: A blade comprises a first blade surface, a second blade surface forming the reverse surface of the first blade surface, a front edge portion connected to the front end of the first blade surface and the front end of the second blade surface and formed in a curved shape convex toward the travelling direction, and a back edge portion connected to the back end of the first blade surface and the back end of the second blade surface extending toward the opposite of the travelling direction, and formed in an acute angle, and the blade is formed to be curved in an arc viewed from the side of the travelling direction.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: October 24, 2017
    Assignee: TECHNOLOGY OF NATURAL PROVIDENCE, INC
    Inventors: Kunihiko Aihara, Junko Aihara
  • Blade, Wind Turbine and Wind Power Generating System
    Publication number: 20140234120
    Abstract: A blade comprises a first blade surface, a second blade surface forming the reverse surface of the first blade surface, a front edge portion connected to the front end of the first blade surface and the front end of the second blade surface and formed in a curved shape convex toward the travelling direction, and a back edge portion connected to the back end of the first blade surface and the back end of the second blade surface extending toward the opposite of the travelling direction, and formed in an acute angle, and the blade is formed to be curved in an arc viewed from the side of the travelling direction.
    Type: Application
    Filed: February 18, 2014
    Publication date: August 21, 2014
    Applicant: TECHNOLOGY OF NATURAL PROVIDENCE, INC
    Inventors: Kunihiko AIHARA, Junko AIHARA