Method of producing a nozzle member for sucking or transporting a string of yarn
US4999901A · kind A · utility
4Cited by
11References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1990 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | Jun 8, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49794
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention provides a process of producing a nozzle member for sucking and transporting a string of yarn having an inner diameter which varies along an axial direction of the nozzle member. The process comprises the step of drawing a pipe stock having a predetermined outside profile so as to transfer the outside profile in an axial symmetrical relationship to an inside profile of the pipe stock. By the process, a nozzle member can be produced readily with a high degree of accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.