Method and apparatus for producing composite cigarette filters
US8337374B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2005 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | May 28, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/0287
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Method and apparatus for producing discrete filter rods includes a first conveyor for transporting filter segments of given length in a downstream direction. Three counter rotating transfer wheels receive the filter segments between spaced apart cleats on the circumference of the wheels. The first wheel receives the filter segments from the first conveyor and transfers the segments to the second wheel which in turn transfers the segments to the third wheel. Filter segments between the cleats on the third wheel are deposited upon a second conveyor with plug wrap thereon in precisely spaced apart relationship. Granular adsorbent material is filled into cavities between the filter segments, and a garniture folds the plug wrap around the filter segments and the filled cavities therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.