Patents by Inventor Gregory Hoepfner

Gregory Hoepfner 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).

  • Clamping control circuit for hybrid surge protection devices
    Patent number: 8531811
    Abstract: A hybrid surge protection device (SPD) having a clamping voltage that is controlled by precisely limiting the overshoot voltage of a gas discharge tube (GDT) in a hybrid suppression network. The suppression network is conventionally connected between a protected line carrying current from a power source to a load and a return connection. The network includes a main surge suppression varistor (VR1) connected in series with the GDT. A clamping control circuit in parallel with the network includes a voltage limiting device (VR2) in parallel with the GDT for preventing voltage overshoot by the GDT above a limiting voltage responsive to an occurrence on the protected line of a surge combination wave. The clamping control circuit also includes a capacitor (C1) connected in parallel with the VR1 providing a bypass path for electrical current and voltage potential to the GDT.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: September 10, 2013
    Assignee: Schneider Electric USA, Inc.
    Inventors: John Ruess, Gregory Hoepfner
  • CLAMPING CONTROL CIRCUIT FOR HYBRID SURGE PROTECTION DEVICES
    Publication number: 20110299203
    Abstract: A hybrid surge protection device (SPD) having a clamping voltage that is controlled by precisely limiting the overshoot voltage of a gas discharge tube (GDT) in a hybrid suppression network. The suppression network is conventionally connected between a protected line carrying current from a power source to a load and a return connection. The network includes a main surge suppression varistor (VR1) connected in series with the GDT. A clamping control circuit in parallel with the network includes a voltage limiting device (VR2) in parallel with the GDT for preventing voltage overshoot by the GDT above a limiting voltage responsive to an occurrence on the protected line of a surge combination wave. The clamping control circuit also includes a capacitor (C1) connected in parallel with the VR1 providing a bypass path for electrical current and voltage potential to the GDT.
    Type: Application
    Filed: June 8, 2010
    Publication date: December 8, 2011
    Applicant: Schneider Electric USA, Inc.
    Inventors: John Ruess, Gregory Hoepfner