Patents by Inventor Hans Rottmerhusen

Hans Rottmerhusen 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).

  • Electromotive Power Steering
    Publication number: 20070257631
    Abstract: Disclosed is an electromotive power steering for a motor vehicle, in which a special type of reluctance motor or series wound motor is used while such an electric motor is electronically commutated. In order to recognize an error condition in the electronic control device and the electric motor, adequate mechanisms are provided in the circuit arrangement (15), the electric motor being cut from the power source by means of a relay (16) or by short-circuiting the power source downstream of a safety device (17) with the aid of a thyristor (18).
    Type: Application
    Filed: June 21, 2005
    Publication date: November 8, 2007
    Applicant: Audi AG
    Inventor: Hans Rottmerhusen
  • Electric Drive for a Vehicle
    Publication number: 20070252543
    Abstract: Disclosed is an electric drive for a vehicle, which is used as a main drive or a hybrid drive. The electric motor of said drive is embodied as a special type of reluctance motor or series wound motor. The rotor of the reluctance motor and the inverse speed motor is provided with an excitation winding to which a transistor is assigned that allows the motor to be braked in a sensitive manner so as to control the field currenL The braking current is fed to the source of current by switching operation of the motor during generator operation.
    Type: Application
    Filed: June 21, 2005
    Publication date: November 1, 2007
    Applicant: Audi AG
    Inventor: Hans Rottmerhusen