Draft device
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United States of America Patent
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Jul 18, 2006
Grant Date -
Apr 7, 2005
app pub date -
Sep 9, 2004
filing date -
Oct 2, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
It is an object of the present invention to provide a draft device DR including draft rollers which, when a draft device composed of a plurality of draft roller pairs is used, can reduce the adverse effect of associated air currents resulting from the rollers rotating at high speed while maintaining a gripping force and can effectively utilize the associated air currents to suppress the spread of a bundle of fibers L. The present invention provides a draft device DR including a plurality of roller pairs that pull a bundle of fibers L while feeding the bundle downstream, wherein associated air currents resulting from a roller constituting the roller pair are passed through ends of the roller, and gaps are provided which form air passages in which the air currents act as air flows forming a prevention wall that hinders spread of the bundle of fibers fed while being drafted.
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