Device for photo-electrically monitoring a moving yarn using two sensor heads
US5182457A · kind A · utility
4Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 26, 1991 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Aug 26, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/8915
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device to monitor a moving yarn for irregularities is described. A first sensor head (2) with a recess (6) and a second sensor head (3) with a recess (7) are arranged in the direction of yarn movement. The cross-sectional depth of the recess (7) in second sensor head (3) is deeper than that of the recess (6) of sensor head (2). It is therefore possible, for example, to record separately slubs and projecting fibers. The monitoring device can be automated and used for quality control of any type of yarn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.