Textiles: spinning – twisting – and twining – Apparatus and processes – Open end spinning
Reexamination Certificate
2006-06-27
2006-06-27
Hurley, Shaun R (Department: 3765)
Textiles: spinning, twisting, and twining
Apparatus and processes
Open end spinning
Reexamination Certificate
active
07065951
ABSTRACT:
A yarn withdrawal nozzle for an open-end rotor spinning arrangement is provided which includes a spiral-shaped surface in the yarn deflecting area which extends essentially over the entire yarn deflecting area and designed as a continuous spiral without interruptions. In addition thereto, the nozzle throat of the yarn withdrawal nozzle includes a further surface with structure downstream of the spiral-shaped surface, including rounded notches or curved humps. Both the spiral-shaped surface and the downstream structure are so designed that they are capable of transferring forces to the yarn without damaging same. The yarn withdrawal nozzle is moulded with a mould separation provided in an area downstream of the nozzle throat to facilitate assembly.
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Crowell & Moring LLP
Hurley Shaun R
Maschinenfabrik Rieter AG
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