Patents by Inventor Russ Gonnam

Russ Gonnam 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).

  • Test plug with overvoltage protection
    Patent number: 7859809
    Abstract: A test plug for use with protective relays has a circuit that when it detects an overvoltage on the secondary side of a current transformer limits the overvoltage amplitude and the occurrence of the overvoltage to a predetermined number of peaks that are less than all of the peaks that occur when the secondary side is open circuited and the test plug is connected to the relays. The test plug also ensures that there is a continuous flow of current in the relays. The test plug further that has an indicator visible external to the plug to indicate the occurrence of an open circuit transformer secondary and that indicator remains illuminated when the test plug is disconnected from the protective relays.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: December 28, 2010
    Assignee: ABB Technology AG
    Inventors: Roy Ball, Russ Gonnam, Cristine Luong
  • Test Plug With Overvoltage Protection
    Publication number: 20100067157
    Abstract: A test plug for use with protective relays has a circuit that when it detects an overvoltage on the secondary side of a current transformer limits the overvoltage amplitude and the occurrence of the overvoltage to a predetermined number of peaks that are less than all of the peaks that occur when the secondary side is open circuited and the test plug is connected to the relays. The test plug also ensures that there is a continuous flow of current in the relays. The test plug further that has an indicator visible external to the plug to indicate the occurrence of an open circuit transformer secondary and that indicator remains illuminated when the test plug is disconnected from the protective relays.
    Type: Application
    Filed: September 12, 2008
    Publication date: March 18, 2010
    Inventors: Roy Ball, Russ Gonnam, Cristine Luong