Device and method for monitoring a thread wound on a bobbin
US7987801B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2006 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Mar 28, 2026 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05D2207/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a device and a method for monitoring a thread wound on a bobbin during operation in a sewing machine that reduces the expenditure on apparatus and production technology with increased monitoring reliability wherein at least three different marking states are provided in the area of the bobbin (3) and are coupled to an optical device (8) in such a manner that movement of the bobbin (3) produces a change in marking which can be detected in the optical device (8) which can be evaluated in a logic unit connected to the optical device (8), that the marking (10) in the area of the bobbin (3) comprises more than two states, wherein at least one state is defined by at least one true color (g, r, b) or a mixture of the primary colors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.