Patents by Inventor Thomas Christöfl

Thomas Christöfl 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).

  • Clutch control system for power transfer unit in four-wheel drive vehicle
    Patent number: 7873457
    Abstract: A power transfer assembly for use in a four-wheel drive vehicle has a torque transfer mechanism equipped with a power-operated clutch actuator for controlling adaptive engagement of a friction clutch and a control system for controlling actuation of the clutch actuator. The control system and its method of operation are adapted to control actuation of the clutch actuator based on whether the vehicle is operating in an engine drive mode or an engine coast/braking mode.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: January 18, 2011
    Assignee: MAGNA Steyr Fahrzeugtechnik AG & Co KG
    Inventors: Thomas Christöfl, Martin Parigger, Andreas Teuschel