Yarn withdrawal nozzle for an open-end rotor spinning arrangement and method of making same
US7065951B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 2005 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Mar 11, 2025 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H4/40
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.