Patents by Inventor Joseph Brandon Witcher

Joseph Brandon Witcher 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).

  • Current limiter circuit system
    Patent number: 9755428
    Abstract: An apparatus comprising a steady state sensing circuit, a switching circuit, and a detection circuit. The steady state sensing circuit is connected to a first, a second and a third node. The first node is connected to a first device, the second node is connected to a second device, and the steady state sensing circuit causes a scaled current to flow at the third node. The scaled current is proportional to a voltage difference between the first and second node. The switching circuit limits an amount of current that flows between the first and second device. The detection circuit is connected to the third node and the switching circuit. The detection circuit monitors the scaled current at the third node and controls the switching circuit to limit the amount of the current that flows between the first and second device when the scaled current is greater than a desired level.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: September 5, 2017
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Joseph Brandon Witcher, Michael V. Bredemann
  • CURRENT LIMITER CIRCUIT SYSTEM
    Publication number: 20160233666
    Abstract: An apparatus comprising a steady state sensing circuit, a switching circuit, and a detection circuit. The steady state sensing circuit is connected to a first, a second and a third node. The first node is connected to a first device, the second node is connected to a second device, and the steady state sensing circuit causes a scaled current to flow at the third node. The scaled current is proportional to a voltage difference between the first and second node. The switching circuit limits an amount of current that flows between the first and second device. The detection circuit is connected to the third node and the switching circuit. The detection circuit monitors the scaled current at the third node and controls the switching circuit to limit the amount of the current that flows between the first and second device when the scaled current is greater than a desired level.
    Type: Application
    Filed: September 15, 2015
    Publication date: August 11, 2016
    Inventors: Joseph Brandon Witcher, Michael V. Bredemann