Open end spinning device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 1, 1995
Grant Date -
N/A
app pub date -
Aug 20, 1992
filing date -
Aug 20, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
At least one circular ridge, which projects upwardly beyond the surface of the navel of the thread delivery device, is placed in the path of yarn being removed from the peripheral wall of the spinning chamber and delivered to the throat of the navel. The ridge has a height of at least 0.003' and is radially so located in proximity to the edge of the navel that the yarn being formed and lifted from the wall of the spinning chamber first engages the navel at the ridge. The result of the engagement of the yarn with the ridge is that the twist is reduced and a higher break strength is achieved with a reduction in imperfections.
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