Patents by Inventor Herman Hiereth

Herman Hiereth 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).

  • Supercharged internal combustion engine with capability for mechanical step-up drive of an exhaust gas turbocharger
    Patent number: 5729978
    Abstract: A supercharged internal combustion engine has an exhaust gas turbocharger which includes an exhaust gas turbine and a compressor. The exhaust gas turbine and the compressor are connected to a turbocharger shaft and an appliance for the transmission of power for the purpose of a mechanical step-up drive capability for the exhaust gas turbocharger arranged between the turbocharger shaft and the crankshaft of the internal combustion engine. The appliance includes at least one step-up gear and a controllable hydrodynamic coupling for torque transmission arranged between the crankshaft and the turbocharger shaft.
    Type: Grant
    Filed: August 23, 1995
    Date of Patent: March 24, 1998
    Assignee: Mercedes-Benz AG
    Inventors: Herman Hiereth, Harald Dauble, Klaus-Jurgen Marquardt, Michael Hoffmann