Patents by Inventor Fritz Lussi

Fritz Lussi 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).

  • High-power low-voltage tetrode having a full walled matrix cathode and a control grid spacing of less than 1 mm
    Patent number: 5206565
    Abstract: In a controllable high-power electron tube in the form of a tetrode, the anode direct voltage is reduced to less than 10 kV with an anode efficiency of greater than 80%. The tube includes coaxially arranged electrodes including a cylindrical indirectly heated full walled matrix cathode containing BaO, a cylindrical control grid, a cylindrical screen grid and an anode, where the spacing between the control grid and the cathode and the spacing between the control grid and the screen grid is less than 1 mm. Such a tube can be used for achieving AM broadcast transmitters which are distinguished by a compact construction, the overall efficiency remaining largely unchanged.
    Type: Grant
    Filed: December 12, 1991
    Date of Patent: April 27, 1993
    Assignee: Asea Brown Boveri Ltd.
    Inventors: Fritz Lussi, Hans-Gunter Mathews, Werner Rohrbach