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Yarn withdrawal device for open-end spinning arrangements and method of making yarn using same
   
Document Number
US Patent 7051508
Issued Date
May 30, 2006
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Inventors
Stahlecker; Gerd (Eislingen/Fils,DE)
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Abstract
A yarn withdrawal device for open-end spinning arrangements has a yarn withdrawal nozzle and a balloon-breaking insert which extends the axial channel of the yarn withdrawal nozzle. The yarn withdrawal nozzle has a curved contact surface for deflecting a yarn to be withdrawn and simultaneously rotating the yarn in a crank-like manner, which contact surface graduates from a front surface into the axial channel. The balloon-breaking insert has an inner wall which is provided with raised areas and/or recesses, with which the yarn comes into contact. The contact surface of the yarn withdrawal nozzle is a smooth steel surface. The raised areas and/or the recesses of the balloon breaking insert are such that a yarn hairiness in the range of 3 mm in length is achievable. In addition, values in relation to the spinning stability, tear resistance and evenness can be achieved which are usual in the case of a notched contact surface of standard yarn withdrawal nozzles without a balloon-breaking insert.
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Number of Claims:
24
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Owner
Published
May 30, 2006
Application Number
10/873,162
Filed
June 23, 2004
US Classification
57/404   57/417
Int'l Classification
D01H   4/08   (20060101)  
Examiner
Attorney/Law Firm
Priority Data
Jun 23, 2003 [DE] 103 29 612
USPTO Field of Search
57/404   57/405   57/406   57/407   57/408   57/409   57/410   57/411   57/412   57/413   57/414   57/415   57/416   57/417  
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