Patents Assigned to POWER DEVELOPMENT INTERNATIONAL, INC.
  • Modular hydrokinetic turbine
    Patent number: 10458386
    Abstract: Methods and apparatus for a modular hydrokinetic turbine. An apparatus includes modular vertically floating units tethered to shore with a generator residing above a waterway and a plurality of vertically oriented blades submerged in the waterway to convert a latent kinetic energy of a moving waterway into electricity.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: October 29, 2019
    Assignee: Power Development International, Inc.
    Inventors: Kahoru Watanabe, Thomas M. Feldman
  • DRAG REDUCTION METHOD FOR HYDROKINETIC VERTICAL AXIS TURBINE BLADES AND STRUCTURES
    Publication number: 20180340508
    Abstract: A vertical axis turbine includes a vertical rotary shaft and turbine blades mechanically coupled to the vertical rotary shaft, each of the turbine blades including curved rounded physical geometries on a leading edge. A method of reducing drag includes improving lift over an air foil design using curved rounded physical geometries on a leading edge of hydrokinetic vertical axis blades that produce channels of high and low pressure water flows over a surface of the hydrokinetic vertical axis blades.
    Type: Application
    Filed: May 22, 2018
    Publication date: November 29, 2018
    Applicant: POWER DEVELOPMENT INTERNATIONAL, INC.
    Inventor: Kahoru Watanabe