Package quality monitor
US4677387A · kind A · utility
3Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1984 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Jan 12, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/31
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The monitor is spaced a small distance from the curved path of the travelling thread to sense defects in the thread. In one embodiment, the monitoring means is spaced from the winding surface of a chuck to sense broken threads or an accurate build-up of the thread package. The monitoring means includes a detector head with a charge collector rod for sensing changes in electrical potential of the rod due to contact with a travelling thread part. The monitoring means can be moved away from the chuck to maintain a constant distance from the thread package being wound on a bobbin tube on the chuck.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.