Patents by Inventor Doris Krahe

Doris Krahe 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).

  • Method and device for determining an angled structure in the surface of a precision machined cylindrical work piece
    Patent number: 6873721
    Abstract: A method for determining a helical groove structure, for example in the form of flutes, in the surface of a finely finished cylindrical workpiece, in particular the ground mating bearing surface of radial shaft sealing rings, which is characterized in that a camera is used to record at least one image of the illuminated surface of the workpiece, which image reproduces the helical groove structure in the surface of the workpiece. A device for carrying out a method includes a CCD camera with a macrolens, a radial bearing device for the workpiece, an illuminating device and an image reading and image processing device.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: March 29, 2005
    Assignee: DaimlerChrysler AG
    Inventors: Jürgen Beyerer, Doris Krahe