Air nozzle utilized for fasciated yarn spinning
US4450678A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 21, 1982 |
| Grant date | May 29, 1984 |
| Priority date | — |
| Expiry date | Dec 21, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S57/908
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An air nozzle, suitable for producing a fasciated yarn, having at least one jet in each of narrow and wide passages along the traveling direction of the fiber bundle. Each jet is directed to generate a vortex whirling reversely from that of the other passage. The twist imparted to the fiber bundle by the vortex generated in the wide passage is restrained by the vortex whirling reversely thereto in the narrow passage. As a result, circumferential fibers of the fiber bundle are less twisted relative to the core portion thereof. During the untwisting operation of the vortex of the wide passage, the circumferential fibers are entangled around the core portion with a twist corresponding to the difference from the core portion, thereby obtaining a well-fasciated yarn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.