Patents by Inventor Peter Thierfelder

Peter Thierfelder 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 the spinning and twisting of yarn on ring spinning frames and twisting frames
    Patent number: 4007581
    Abstract: In the spinning or twisting of continuous fibrous material at a spinning or twisting frame station comprising a spindle for carrying a bobbin, a ring concentrically mounted about the spindle and supporting a traveler for guiding the fibrous material onto the bobbin and means for driving the ring and the spindle, the improvement comprising engaging the fibrous material at the head of the spindle thereby to reduce or eliminate ballooning of the fibrous material and rotating the ring at a lesser rate that the spindle thereby to decrease the tension on the yarn.
    Type: Grant
    Filed: September 18, 1975
    Date of Patent: February 15, 1977
    Assignee: VEB Spinnereimaschinenbau
    Inventors: Rolf Langer, Peter Thierfelder, Harald Geisler