Patents by Inventor Helmut Weinsdörfer

Helmut Weinsdörfer 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: 7309667
    Abstract: A fabric includes mutually transverse thread systems, with at least one of the thread systems including a differential shrinkage yarn C. The shrinkage yarn C has at least one effect component A that irreversibly elongates itself upon heat treatment, and at least one shrinkage component B that shortens itself upon heat treatment. The components A and B are bound together by nodes, wherein the number (y) of nodes per meter in the yarn C is predetermined as a function of the yarn count (x) of the transverse thread system so that the number (y) of nodes exceeds a minimum value and increases proportionally above the minimum value as a function of the yarn count (x).
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: December 18, 2007
    Assignee: Deutsche Institute fur Textilund Faserforschung Stuttgart
    Inventors: Stefan Schindler, Helmut Weinsdörfer, Jürgen Wolfrum
  • Patent number: 7036532
    Abstract: A shedding device in a jacquard loom, having a heddle with a retracting spring rigidly anchored in the loom or to the floor for urging the heddle to a lower shed forming position. To suppress the development of resonance in the spring, a core element is provided, which contacts the inside of the spring at points spaced apart from one another and forces the spring to take a course which deviates from the rectilinear. As a result, friction forces that contribute to damping the spring motion are created between the spring and the core element.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: May 2, 2006
    Assignee: Deutsch Institute fur Faserforschung
    Inventors: Hans-Jürgen Bauder, Helmut Weinsdörfer