Patents by Inventor Walter Baumgaertner

Walter Baumgaertner 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).

  • Hybrid drive for vehicles and the like
    Patent number: 6251037
    Abstract: A hybrid drive, in particular for vehicles has a variable-ratio gear unit with a branch which can be driven by a primary motor. The gear unit is also connected in a rotationally rigid manner to a rotatable part of a first electric machine. A branch of the gear unit is connected in a rotationally rigid manner to a rotatable rotor of a second electric machine. Another branch connected in a rotationally rigid manner to an output shaft and to which the likewise rotatably arranged other machine component of the first electric machine is connected in a rotationally rigid manner. The rotor of the second machine can be fixed or released for rotation by a brake.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: June 26, 2001
    Assignee: DaimlerChrysler AG
    Inventors: Walter Baumgaertner, Klaus Meier, Alfons Rennefeld, Jakob Seiler