Patents by Inventor Fritz Sondermann

Fritz Sondermann 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).

  • Thermoelectric level detector and a method for its manufacture
    Patent number: 4567762
    Abstract: A thermoelectric level detector employs an impedance element, at least a portion of which is meandering in configuration in which the resistive path repeatedly traverses the axis thereof, to detect the level of liquid in a tank. The impedance of the element depends on temperature and provides a measure of the liquid level. The pitch of the meander is relatively small in the reserve region of the tank to provide fine resolution in this region.
    Type: Grant
    Filed: February 19, 1982
    Date of Patent: February 4, 1986
    Assignee: Telefunken electronic GmbH
    Inventors: Hans Hopper, Dieter Busch, Fritz Sondermann, Fritz Stork