Cigarette manufacture
US5002072A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1989 |
| Grant date | Mar 26, 1991 |
| Priority date | — |
| Expiry date | Mar 1, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S131/91
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A cigarette making machine includes one or more conveyor bands (12,14,28) or other parts of non-metallic material from which pieces can break off and become entrained in the tobacco, including means (30,42) for detecting such pieces in the tobacco by directing a radiation beam towards the tobacco, and including means 40 for ejecting tobacco or finished cigarettes including such detected pieces, the parts in question being made of a material, or having a material incorporated in then or coated on them, which is either opaque or partially opaque to the detection beam, or which produces a detectable secondary emission detected by the detecting means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.