Process and device for detecting impurities in a textile test material
US5414520A · kind A · utility
14Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1993 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Nov 15, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/311
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The test sample (G) is illuminated at at least two points (S 1, S2) and the reflection from the test sample (G) and also the diameter of the sample or the change therein are measured by receivers (E1, E2). The measurement signals thus obtained are linked together and the signal resulting from this process is examined for differences from a predetermined value. If a difference is detected, there is an impurity in the test sample (G). For use in combination with an electronic yarn clearer for the detection of foreign fibers in yarns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.