Patents by Inventor Donal O'Brien

Donal O'Brien 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).

  • Arc fault current detector
    Patent number: 10886722
    Abstract: An arc fault current detector for an electricity supply having at least two supply conductors (P1, P2) comprises a coil (L1) disposed adjacent to but not surrounding at least one of the conductors and inductively coupled thereto. A circuit (14) is connected to the coil for detecting a signal induced in the coil having frequency characteristics corresponding to an arc fault in the supply.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: January 5, 2021
    Assignee: Shakira Limited
    Inventors: Patrick Ward, Donal O'Brien, Andrii Vikliuk
  • ARC FAULT CURRENT DETECTOR
    Publication number: 20190181628
    Abstract: An arc fault current detector for an electricity supply having at least two supply conductors (P1, P2) comprises a coil (L1) disposed adjacent to but not surrounding at least one of the conductors and inductively coupled thereto. A circuit (14) is connected to the coil for detecting a signal induced in the coil having frequency characteristics corresponding to an arc fault in the supply.
    Type: Application
    Filed: October 27, 2016
    Publication date: June 13, 2019
    Inventors: Patrick Ward, Donal O'Brien, Andrii Vikliuk