Patents by Inventor Lutz Witthöft

Lutz Witthöft 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).

  • Internal combustion engine having a hydraulic device for adjusting the rotation angle of a camshaft relative to a crankshaft
    Patent number: 7222597
    Abstract: A hydraulic device for adjusting the rotation angle of a camshaft relative to a crankshaft in an internal combustion engine. The device has a rotor, with blades arranged around its periphery. A stator is connected in a rotationally secure manner to a drive wheel. The rotor and the stator together form pressure chambers, which can be filled with hydraulic fluid via a hydraulic fluid system, in which there is disposed a volume accumulator.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: May 29, 2007
    Assignee: INA-Schaeffler KG
    Inventors: Jochen Auchter, Andreas Strauss, Lutz Witthöft, Michael Busse, Dirk Heintzen, Jürgen Plate