Patents by Inventor Friedrich Altenberg

Friedrich Altenberg 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).

  • Patent number: 4735110
    Abstract: A shifting arrangement for the shifting between a single-axle standard drive and an all-wheel drive, having a first clutch for the locking of a central differential gear and a second clutch for the connecting and disconnecting of one vehicle axle, actuated by first and second pressure medium control elements against the force of a spring and having a shift valve controlled by an electronic control unit, to either supply working pressure or relieve from pressure the control element. The shift valve can be controlled by the control unit in such a way that, when there is a shifting into the shifting step for the standard drive, the clutch torque of the clutch of the differential gear at least approximately increases only to the extent to which the clutch torque of the other clutch decreases. As a result, a sudden rise of torque is avoided at the vehicle axle that is driven in a standard drive.
    Type: Grant
    Filed: January 15, 1987
    Date of Patent: April 5, 1988
    Assignee: Daimler-Benz Aktiengesellschaft
    Inventor: Friedrich Altenberg