Patents by Inventor Gerd-Peter Hercher

Gerd-Peter Hercher 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).

  • Hydrodynamic coupling having constant quantity of working fluid and valve for displacing working fluid between a working space and a storage space
    Patent number: 6101810
    Abstract: A hydrodynamic coupling having a constant quantity of working fluid, the coupling comprising, a pump wheel and a turbine wheel which together form a working space for a working fluid, a first storage chamber in fluid communication with the working space; and a valve for displacing working fluid between the working space and the storage chamber in response to an external control during operation of the coupling; and further comprising a housing which is connected, fixed for rotation, with the pump wheel, the housing including the first storage chamber, the first storage chamber being rotatable with the housing.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: August 15, 2000
    Assignee: Voith Turbo GmbH & Co.
    Inventors: Kurt Adleff, Maik Tietz, Gerd-Peter Hercher