Patents by Inventor Heinrich Weingarten

Heinrich Weingarten 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 preparing randomly cross-wound yarn packages
    Patent number: 5857638
    Abstract: A friction roller of a winding station of a winding machine is driven at a base angular velocity and is alternately accelerated and braked when the winding ratio is otherwise within a predetermined range of a selected whole number for causing slippage between the friction roller and a yarn package whereby the winding ratio is changed between values above and below the preselected range of the whole number. An evaluation device that calculates acceleration and braking values and a motor responsive to the evaluation device for driving the friction roller control the accelerating and decelerating of the friction roller when the winding ratio would otherwise be within the predetermined range of the selected whole number. Pattern windings of the yarn package are thus avoided.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: January 12, 1999
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Ferdinand-Josef Hermanns, Andreas Kruger, Torsten Forche, Stefan Terorde, Heinrich Weingarten