Method and apparatus for evaluating yarn signals based on the detection of at least approximately periodic variations in cross section
US4168604A · kind A · utility
17Cited by
6References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1978 |
| Grant date | Sep 25, 1979 |
| Priority date | — |
| Expiry date | Feb 17, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/31
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An apparatus for controlling a plurality of spinning stations by evaluating yarn signals based upon detection of approximately periodic variations in yarn cross section provides for conversion of the signals to digital form and application of the digital signals to a microcomputer in which the sum of the differences between the original yarn signal and a yarn signal delayed in time is continuously formed. Specific fault signals are produced from the summed differences which are checked against predetermined reference values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.