Patents Assigned to Institut fur Textil-und Verfahrenstechnik Denkendorf der deutschen Institute fur Textil-und Faserforschung
  • Patent number: 7475531
    Abstract: The invention relates to a drafting device with twin top front rollers surrounded by aprons in which the aprons are guided around deflection members arranged above the area facing away from the clamping surface of the front roller pair. In order to achieve a low-friction, brake-free and low-wear running of the aprons, they are guided with only a slight tension around the deflection members. For this, the tendency of the aprons to assume a circular form in the circumferential direction is utilized. This tendency brings about, with the appropriately selected interval between the top front rollers and between the surfaces of the deflection members, the low contact pressure on the surfaces striven for and the low tractive tension in the aprons striven for.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: January 13, 2009
    Assignee: Institut fur Textil-und Verfahrenstechnik Denkendorf der deutschen Institute fur Textil-und Faserforschung
    Inventors: Peter Artzt, Theo GrĂ¼n, Larisa Ausheyks, Stefan Krawietz