Patents by Inventor Norman David Griffiths

Norman David Griffiths 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).

  • Method and means of generating electrical energy
    Patent number: 3975651
    Abstract: A method and apparatus of generating electrical energy either as direct or alternating current output wherein an electric current is passed axially through a continuous flow of electrically conductive fluid in a duct member, the fluid is moved at a high velocity so that the circumferential magnetic field due to the electric current travels with the fluid and induces radially directed electromotive forces and current flow in a further conductive device disposed exteriorly about the duct member.
    Type: Grant
    Filed: March 27, 1975
    Date of Patent: August 17, 1976
    Inventor: Norman David Griffiths