Apparatus for guiding, treating, or conveying at least one yarn
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United States of America Patent
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Jun 5, 2007
Grant Date -
Apr 7, 2005
app pub date -
Nov 24, 2004
filing date -
Jun 19, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus for guiding, treating, or advancing at least one yarn (1), comprising a delivery roll (2) and a companion roll (3) cooperating with the delivery roll so that the yarn repeatedly loops the delivery roll (2) and the companion roll (3). The delivery roll and the companion roll are driven by associated electric motors (7, 8), which are controlled via control lines (9) at a desired frequency by a controller (10). To enable an equalization of the circumferential speeds of the delivery roll (2) and the companion roll (3), the electric motor of the companion roll is an asynchronous motor that is controlled by the desired frequency and has a motor slip.
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