Method and apparatus for determining characteristics of staple fiber yarns
US4891974A · kind A · utility
14Cited by
3References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 23, 1988 |
| Grant date | Jan 9, 1990 |
| Priority date | — |
| Expiry date | Sep 23, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H13/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for determining characteristics of staple fiber yarn by measuring the change in the yarn diameter after twisting or untwisting of the yarn. The yarn thickness of a length of yarn is measured during a first measuring process and subsequently, by a second measuring process after the twist is released. The two series of values of yarn thickness or diameter can then be compared with one another to determine certain characteristics of the sampled yarn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.