Thread drawoff tube for an open-end spinning unit
US3965661A · kind A · utility
10Cited by
8References
10Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Apr 18, 1974 |
| Grant date | Jun 29, 1976 |
| Priority date | — |
| Expiry date | Apr 18, 1994 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H4/40
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a spinning apparatus comprising a spinning rotor and a centrally arranged thread drawoff tube for drawing off thread from the spinning chamber, an improved thread drawoff tube having a thread passage for delivering the thread from the tube is provided, the thread passage being provided with a combination of a curved ring shaped friction surface and a flat ring shaped friction surface formed outside of the curved ring shaped surface, the friction resistance of the thread passage decreasing toward the outer edge of the flat ring shaped surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.