Patents by Inventor Frieder H. Ennslin

Frieder H. Ennslin 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 of operating and power supply for X-ray tubes
    Patent number: 4039811
    Abstract: A power supply and timing circuit for an X-ray tube capable of maintaining constant X-ray exposure values and stable peak plate voltage despite relatively large variations in the voltage of the source from which the power supply is fed. The cathode-to-plate current in the X-ray tube is varied responsively to changes in the voltage of the source, thereby varying the load on the high voltage transformer and holding its output voltage at a constant value despite changes in the source voltage. Changes in the cathode-to-plate current may be compensated for by the use of a milliampere-second integrator to time the exposure.
    Type: Grant
    Filed: November 25, 1975
    Date of Patent: August 2, 1977
    Assignee: Sybron Corporation
    Inventors: Frieder H. Ennslin, Richard J. Buck