Patents by Inventor Hans Fricke

Hans Fricke 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).

  • Decoupling arrangement for non-insulated AC track circuits in railway systems
    Patent number: 4373691
    Abstract: A decoupling arrangement for non-insulated track circuits is disclosed wherein the receiving circuit of the evaluating unit for the AC track currents is electrically separated from the traction-current-carrying parts of the track. The cross bonds between the two rails of a track may be shorting bonds or so-called S bonds. The arrangement according to the invention improves the tuning behavior of the track circuit receivers considerably.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: February 15, 1983
    Assignee: International Standard Electric Corporation
    Inventors: Hans Fricke, Jurgen Kiess, Lutz Schulmeyer
  • Gas turbine
    Patent number: 3972642
    Abstract: A gas turbine with a centrifugal compressor as generator for compressed air and with a withdrawal of compressed air for outside use, according to which within the region of the withdrawal area at the compressed air passage there is provided an adjustable flow divider which during the withdrawal of compressed air divides the oncoming quantity of air into a withdrawal quantity and a gas turbine quantity.
    Type: Grant
    Filed: February 28, 1975
    Date of Patent: August 3, 1976
    Assignee: Klockner-Humboldt-Deutz Aktiengesellschaft
    Inventors: Hans Fricke, Hans Schummer