Patents by Inventor Hans-Jurgen Wessel-Schlickmann

Hans-Jurgen Wessel-Schlickmann 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 for operating an automatic sewing device with a sewing head including a rotary housing
    Patent number: 4787326
    Abstract: A method for operating a sewing automat with a sewing head with a rotary housing provides a compensation signal for a drive motor, in particular for the x- and y-drive motors of the workpiece holder, respectively, in order to correct errors of stitch length resulting from the superposition of the motion of the rotary housing relative to its drive motions. In order to accomplish this, the method provides the detection of the angular position of the rotary housing from one stitch to the next and the generation of a compensation signal depending on this angle difference.
    Type: Grant
    Filed: September 3, 1987
    Date of Patent: November 29, 1988
    Inventors: Hans Scholl, Hans-Jurgen Wessel-Schlickmann