Patents by Inventor Hans Holenstein

Hans Holenstein 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).

  • Electron tube, in particular a transmitter tube
    Patent number: 4546286
    Abstract: In a cathode for a heavy-duty electron tube, the cathode wires (5) lying on the surface (11) of a cylinder between two rigidly constructed connector rings (7, 8) have the form of a surface line with changing pitch. The cathode wires are connected by a support ring (6). The thermal expansion of the cathode wires during operation results only in a shifting on the surface (11). In this manner the cylindrical shape of the cathode and thus the distance to the control grid are maintained without the expensive spring suspension device used in the cage cathode.
    Type: Grant
    Filed: July 27, 1983
    Date of Patent: October 8, 1985
    Assignee: BBC Brown, Boveri & Company, Limited
    Inventor: Hans Holenstein