Patents by Inventor Hermann Forkel

Hermann Forkel 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).

  • X-Ray diagnostic generator in which the x-ray tube voltage is adjusted via the x-ray tube current
    Patent number: 4368537
    Abstract: In an exemplary embodiment in order to establish the desired relationship between x-ray tube voltage and x-ray tube current, at least one series resistance is connected in the power path between the mains and the x-ray tube. A switching device for by-passing the series resistance is present which is controlled by a comparator for the actual value and setpoint value of the x-ray tube voltage in such a fashion that the series resistance is by-passed at the commencement of a radiograph as long as the actual value is smaller than the setpoint value.
    Type: Grant
    Filed: March 26, 1981
    Date of Patent: January 11, 1983
    Assignee: Siemens Aktiengesellschaft
    Inventors: Heribert Amtmann, Hermann Forkel, Hans-Jurgen Gerlach