Patents by Inventor John William Powell

John William Powell 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).

  • Electro-permanent magnetic devices including unbalanced switching and permanent magnets and related methods and controllers
    Patent number: 10734149
    Abstract: A method of operating an electro-permanent magnet may include switching the electro-permanent magnet from an on state wherein magnetic fields of switching and permanent magnets combine to generate a first magnetic field having a first magnitude and a first polarity to a reversed state having a second polarity wherein magnetic fields of the switching magnets and the permanent magnets combine to generate a second magnetic field having a second magnitude less than the first magnitude and a second polarity different than the first polarity. The electro-permanent magnet may be switched from the reversed state to an off state wherein magnetic fields of the switching and permanent magnets combine to generate a third magnetic field having a magnitude that is no more than 50 percent of the second magnitude. Related electro-permanent magnets are also discussed.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: August 4, 2020
    Assignee: WEN TECHNOLOGY INC.
    Inventors: John William Powell, Christopher J. Brusa, William A. Henley
  • ELECTRO-PERMANENT MAGNETIC DEVICES INCLUDING UNBALANCED SWITCHING AND PERMANENT MAGNETS AND RELATED METHODS AND CONTROLLERS
    Publication number: 20170278613
    Abstract: A method of operating an electro-permanent magnet may include switching the electro-permanent magnet from an on state wherein magnetic fields of switching and permanent magnets combine to generate a first magnetic field having a first magnitude and a first polarity to a reversed state having a second polarity wherein magnetic fields of the switching magnets and the permanent magnets combine to generate a second magnetic field having a second magnitude less than the first magnitude and a second polarity different than the first polarity. The electro-permanent magnet may be switched from the reversed state to an off state wherein magnetic fields of the switching and permanent magnets combine to generate a third magnetic field having a magnitude that is no more than 50 percent of the second magnitude. Related electro-permanent magnets are also discussed.
    Type: Application
    Filed: March 22, 2017
    Publication date: September 28, 2017
    Inventors: John William Powell, Christopher J. Brusa, William A. Henley