Patents by Inventor Jiri Kastan

Jiri Kastan 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).

  • Leakage detection in a flame sense circuit
    Patent number: 10935237
    Abstract: A flame detection system is designed to detect leakage in flame sense circuits. The flame detection system includes a flame sensor, an amplifier, a detection circuit, and a microcontroller. Flame sense circuitry use operational amplifiers that needs negative voltage supply for its operation. Negative supply voltage properly measures negative input signals. Once a leakage current in the flame detection system is determined a shutdown signal is provided to shut down a flame sensor when the leakage current condition is determined.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: March 2, 2021
    Assignee: Honeywell International Inc.
    Inventors: Jan Vorlicek, Jiri Kastan, John Evers
  • LEAKAGE DETECTION IN A FLAME SENSE CIRCUIT
    Publication number: 20200208838
    Abstract: A flame detection system is designed to detect leakage in flame sense circuits. The flame detection system includes a flame sensor, an amplifier, a detection circuit, and a microcontroller. Flame sense circuitry use operational amplifiers that needs negative voltage supply for its operation. Negative supply voltage properly measures negative input signals. Once a leakage current in the flame detection system is determined a shutdown signal is provided to shut down a flame sensor when the leakage current condition is determined.
    Type: Application
    Filed: November 22, 2019
    Publication date: July 2, 2020
    Inventors: Jan Vorlicek, Jiri Kastan, John Evers
  • Flame sense circuit with variable bias
    Patent number: 10473329
    Abstract: A system for changing a bias level of a flame sensing circuit to identify leakage in the flame sensing circuit. The bias level may be varied in the positive or negative axis and the flame current may be noted to identify leakage. The bias level may be changed by a microcontroller. The bias level may be changed using an operational amplifier configuration which is used as a signal conditioner for interfacing the flame signal to the microcontroller.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: November 12, 2019
    Assignee: Honeywell International Inc.
    Inventors: Jan Vorlicek, Jiri Kastan
  • FLAME SENSE CIRCUIT WITH VARIABLE BIAS
    Publication number: 20190195493
    Abstract: A system for changing a bias level of a flame sensing circuit to identify leakage in the flame sensing circuit. The bias level may be varied in the positive or negative axis and the flame current may be noted to identify leakage. The bias level may be changed by a microcontroller. The bias level may be changed using an operational amplifier configuration which is used as a signal conditioner for interfacing the flame signal to the microcontroller.
    Type: Application
    Filed: December 22, 2017
    Publication date: June 27, 2019
    Inventors: Jan Vorlicek, Jiri Kastan