Method and device for improving a yarn produced in the rotor of an open-end spinning apparatus
US4829762A · kind A · utility
7Cited by
7References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1988 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Feb 22, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H4/08
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and a device for improving a yarn produced with genuine twist in the rotor of an open-end spinning apparatus directs the yarn through a yarn take-off nozzle in a given yarn travel direction. The yarn is subsequently diverted from the given yarn travel direction first to one side and then back to the opposite side over false-twist edges disposed obliquely relative to the given yarn travel direction including a last false-twist edge. Outer fiber ends of the traveling yarn are spread radially apart after passing the last false-twist edge. The yarn is subsequently passed through a pair of delivery rollers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.