Manufacture of cigarettes and the like
US3987804A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1972 |
| Grant date | Oct 26, 1976 |
| Priority date | — |
| Expiry date | Sep 25, 1992 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24C5/1821
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Cigarettes are made with a filler comprising an outer annulus of tobacco surrounding a core of a tobacco or other material different from that in the outer annulus. The annulus tobacco is showered onto a conveyor to form a layer which is then bent into a U-section. Core material is fed into the longitudinal recess in the layer, after which further tobacco is showered on to the layer plus core to enclose the core in tobacco the core may be formed by showering the core material onto a separate conveyor which then feeds the core material into the recess in the first layer. Alternatively, the core material may be in the form of regularly spaced segments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.