Patents by Inventor Waldemar Heimann

Waldemar Heimann 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).

  • VEHICLE CHARGING CIRCUIT WITH RECTIFIER DEVICE, LINK CAPACITOR AND PRECHARGING/DISCHARGE CIRCUIT
    Publication number: 20240025259
    Abstract: A vehicle charging circuit is equipped with a rectifier device, at least one intermediate circuit capacitor and at least one precharge/discharge circuit. The rectifier device is connected to the intermediate circuit capacitor via the precharge/discharge circuit. The precharge/discharge circuit has at least one first changeover switch that is configured, in a first position, to connect a first pole of the intermediate circuit capacitor to a first potential of the rectifier device. In a second position, the changeover switch connects the first pole of the intermediate circuit capacitor to the second pole of the intermediate circuit capacitor via a discharge resistor. The changeover switch is configured to adopt the second switching position in the actuation-free state.
    Type: Application
    Filed: December 3, 2021
    Publication date: January 25, 2024
    Inventors: Waldemar Heimann, Martin GÖTZENBERGER, Walter SCHROD, Thomas FRANZ