Method of monitoring closures on containers
US7009697B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 2002 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Jun 2, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/9054
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method of optical inspection of closures on containers in which the outer edge of a closure is illuminated obliquely from above over the full circumference, and a photograph of the top side of the closure is made perpendicularly from above, and this photograph is used to detect the outer edge of the mouth, which appears brighter, and to check on the position of the cover logo relative to this edge of the mouth either directly or indirectly, and a signal is generated in the event an unacceptable eccentricity is found.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.