Devices for producing a continuous thread from a roving composed of parallel short fibers
US4615170A · kind A · utility
1Cited by
7References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 15, 1985 |
| Grant date | Oct 7, 1986 |
| Priority date | — |
| Expiry date | Aug 15, 2005 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H5/28
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A roving of short fibers is converted to a continuous twisted thread by a device which grips the roving between the facing teeth of two endless belts, and an acoustically generated transverse air jet is directed at the side of the roving, at a fixed point situated between the two belts. The direction of the air jet is reversed each time the fixed point is passed either a pair of facing teeth, or the midpoint in the gap between two successive pairs of facing teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.