Patents by Inventor Gerhard Steffen

Gerhard Steffen 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: 6325573
    Abstract: An arrangement comprising a bore-type hobbing cutter and a holding arbor wherein the bore of the hobbing cutter has ground cylindrical centering surfaces at its ends and the arbor has complementary seating surfaces and wherein the hobbing cutter is axially chucked on the holding arbor by means of axial chucking means, where a preferably sleeve-shaped cage is disposed between centering surfaces and has a thickness which is smaller than the radial distance between centering and seating surfaces, and has an outside diameter which is smaller than the inside diameter of centering surfaces, the cage supports, in a circumferential direction, at least a number of prechucking elements, which are preferably metallic and are in contact with the associated centering surface and the seating surface, and said diameter and the distance between the contacting points or contacting lines of prechucking members are slightly larger than the radial distance between centering and seating surfaces.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: December 4, 2001
    Assignee: Wilhelm Fette GmbH
    Inventors: Wolfgang Carmincke, Christian Davids, Andreas Ebert, Jürgen Hinzpeter, Werner Kölker, Wolfram Lämmerhirt, Ansgar Pleus, Meinhard Schadowski, Wolfgang Soltau, Gerhard Steffen