Patents by Inventor Hermann Speer

Hermann Speer 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 for inserting a pumping rod in a discharge chamber
    Patent number: 6609940
    Abstract: In a novel method in the field of the production of discharge vessels, in particular for silent flat radiators, an exhaust tube 3 for evacuating and filling is inserted into an opening 2 in the discharge vessel, it being possible in a simple way by means of an adapter 4 to achieve optimum fitting and sealing between a square inner cross section of the opening 2 and a round outer cross section of the exhaust tube 3.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: August 26, 2003
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Michael Seibold, Michael Ilmer, Angela Eberhardt, Hermann Speer