Patents by Inventor Nalin Ahangama Ralalage

Nalin Ahangama Ralalage 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).

  • Erratic short-circuit detection
    Patent number: 11176806
    Abstract: A fire detection system may include isolation circuit having an isolation switch coupled with a system line of the fire detection system and configured to isolate a first side of the system line from a second side of the system line. The isolation circuit may also include a controller coupled with the isolation switch. The controller may be configured to detect repetitive, intermittent short circuit activity on the system line and control the isolation switch based on this activity.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: November 16, 2021
    Assignee: JOHNSON CONTROLS FIRE PROTECTION LP
    Inventors: Alexandre Gouin, Nalin Ahangama Ralalage
  • Erratic short-circuit detection
    Patent number: 10997851
    Abstract: A fire detection system may include isolation circuit having an isolation switch coupled with a system line of the fire detection system and configured to isolate a first side of the system line from a second side of the system line. The isolation circuit may also include a controller coupled with the isolation switch. The controller may be configured to detect repetitive, intermittent short circuit activity on the system line and control the isolation switch based on this activity.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: May 4, 2021
    Assignee: JOHNSON CONTROLS FIRE PROTECTION LP
    Inventors: Alexandre Gouin, Nalin Ahangama Ralalage