Patents by Inventor Michael Vangool

Michael Vangool 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).

  • Two-wire resistance terminated ground check
    Patent number: 9989576
    Abstract: A ground check monitoring device coupled to a trailing cable includes a voltage source and a switch. The trailing cable includes a first conductor, a second conductor, and a ground conductor. A resistive termination device is coupled between the first conductor and the ground conductor. A controller of the ground check monitoring device can toggle the switch between a first node of the first conductor and a second node of the second conductor. By measuring voltages at the first and second nodes, the ground check monitoring device can determine if the resistive termination device is shorted. Further, the controller can calculate resistance values of the first and second conductors and calculate a resistance value of the ground conductor. The calculated resistance values can be compared to expected values and the controller can signal a ground fault condition as appropriate based on the comparisons.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: June 5, 2018
    Assignee: Littelfuse, Inc.
    Inventors: Michael Vangool, Nehad El-Sherif El-Kharbawe, George J. Fenty
  • TWO-WIRE RESISTANCE TERMINATED GROUND CHECK
    Publication number: 20160245854
    Abstract: A ground check monitoring device coupled to a trailing cable includes a voltage source and a switch. The trailing cable includes a first conductor, a second conductor, and a ground conductor. A resistive termination device is coupled between the first conductor and the ground conductor. A controller of the ground check monitoring device can toggle the switch between a first node of the first conductor and a second node of the second conductor. By measuring voltages at the first and second nodes, the ground check monitoring device can determine if the resistive termination device is shorted. Further, the controller can calculate resistance values of the first and second conductors and calculate a resistance value of the ground conductor. The calculated resistance values can be compared to expected values and the controller can signal a ground fault condition as appropriate based on the comparisons.
    Type: Application
    Filed: February 19, 2016
    Publication date: August 25, 2016
    Applicant: LITTELFUSE, INC.
    Inventors: Michael Vangool, Nehad El-Sherif El-Kharbawe, George J. Fenty