Patents by Inventor Marco Kellermann

Marco Kellermann 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).

  • Surge arrester for DC mains and method of operating such a surge arrester
    Patent number: 12646931
    Abstract: A surge arrester for DC mains comprises a spark gap for extinguishing mains follow currents in the DC mains, the current intensity of which is equal to or greater than a specified current threshold, and a triggerable extinguishing aid assigned to the spark gap, which is set up to extinguish mains follow currents below the specified current threshold. The surge arrester further comprises an evaluation module for triggering the extinguishing aid, the evaluation module being set up to trigger the extinguishing aid as soon as at least two tripping conditions are fulfilled which are characteristic of the fact that the spark gap alone 10 cannot extinguish the mains follow current within a specified time duration. Furthermore, a method of operating such a surge arrester is described.
    Type: Grant
    Filed: January 10, 2024
    Date of Patent: June 2, 2026
    Assignee: DEHN SE
    Inventors: Klaus Bühler, Arnd Ehrhardt, Marco Kellermann
  • SURGE ARRESTER FOR DC MAINS AND METHOD OF OPERATING SUCH A SURGE ARRESTER
    Publication number: 20240266824
    Abstract: A surge arrester for DC mains comprises a spark gap for extinguishing mains follow currents in the DC mains, the current intensity of which is equal to or greater than a specified current threshold, and a triggerable extinguishing aid assigned to the spark gap, which is set up to extinguish mains follow currents below the specified current threshold. The surge arrester further comprises an evaluation module for triggering the extinguishing aid, the evaluation module being set up to trigger the extinguishing aid as soon as at least two tripping conditions are fulfilled which are characteristic of the fact that the spark gap alone 10 cannot extinguish the mains follow current within a specified time duration. Furthermore, a method of operating such a surge arrester is described.
    Type: Application
    Filed: January 10, 2024
    Publication date: August 8, 2024
    Inventors: Klaus Bühler, Arnd Ehrhardt, Marco Kellermann