Patents by Inventor Patrick Engelhardt

Patrick Engelhardt 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).

  • Method and apparatus for controlling a relay
    Patent number: 11367579
    Abstract: In a method for controlling a relay with a relay contact, switching as an opening operation or a closing operation at the relay is temporally captured with respect to accurate opening or closing of the relay contact in comparison with a switching voltage zero crossing of a switching voltage to be switched. An actual switching time is determined and is corrected by means of further capturing of switching operations. A microcontroller is used for this purpose, and the signals can be digitally captured, that is to say at an A/D input.
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: June 21, 2022
    Assignee: E.G.O. Elektro-Geraetebau GmbH
    Inventors: Patrick Engelhardt, Eduard Kraemer
  • METHOD AND APPARATUS FOR CONTROLLING A RELAY
    Publication number: 20210233722
    Abstract: In a method for controlling a relay with a relay contact, switching as an opening operation or a closing operation at the relay is temporally captured with respect to accurate opening or closing of the relay contact in comparison with a switching voltage zero crossing of a switching voltage to be switched. An actual switching time is determined and is corrected by means of further capturing of switching operations. A microcontroller is used for this purpose, and the signals can be digitally captured, that is to say at an A/D input.
    Type: Application
    Filed: January 4, 2021
    Publication date: July 29, 2021
    Inventors: Patrick Engelhardt, Eduard Kraemer