Method and apparatus for monitoring the tension of an advancing yarn
US4720702A · kind A · utility
21Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1986 |
| Grant date | Jan 19, 1988 |
| Priority date | — |
| Expiry date | Jul 2, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/31
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The yarn tension at each of a plurality of yarn processing stations is continuously monitored, while continuously determining the mean value of the monitored tension at each station, and while also continuously determining the differential between the monitored value and the mean value. Also, an alarm signal is generated whenever the mean value leaves a predetermined tolerance range, and whenever the differential value leaves a second predetermined tolerance range. An alarm signal may serve to actuate a visual error indicator, or to shut down the associated processing station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.