Opto-electronic sensor device for a yarn feeder
US6095200A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1998 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | Dec 17, 2018 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD03D47/367
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An opto-electronic device (S) for detecting the movement of yarn (Y) (10) passing transversely through a detection zone (11) on the storage drum (3) of a yarn feeder (F), has at least one light source (L) directed on the detection zone (11), at least one reflector (B) fitted on the storage drum (3) a short distance away on the side of the detection zone (11) away from the light source (L) and at least one signal-generating receiver (R) directed towards the detection zone. The opto-electronic device also has a reflector which includes (B) at least one narrow and approximately flat reflection area (15, 15', 15") extending essentially parallel to the longitudinal direction of the yarn and in the circumferential direction of the storage drum (3). The reflection area is bounded at its longitudinal sides by either a strip diaphragm fitted between the reflector (B) and the yarn passage plane (13), or diaphragmed regions (17) arranged approximately in the reflector plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.