Method and apparatus for detecting the presence of yarns
US4023399A · kind A · utility
0Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 18, 1975 |
| Grant date | May 17, 1977 |
| Priority date | — |
| Expiry date | Mar 18, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/31
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for sensing the presence or absence of yarns using a simple airflow in an open slot formed between parallel plates, the presence upstream of the proper yarn path being sensed. In one form, the pressure is sensed at multiple points and averaged to accommodate yarn oscillation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.