Adjustable air dilution cigarette exhibiting controlled pressure drop
US4649945A · kind A · utility
38Cited by
18References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1985 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Dec 5, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/041
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A smoking article such as a filter cigarette can have an adjustable delivery air dilution while exhibiting a reduced pressure drop decrease during air dilution thereof. The pressure drop decrease is controlled during various stages of air dilution by positioning the structure for greatest air dilution on the cigarette a greater distance from the extreme mouthend of the cigarette relative to the structure for least air dilution. Filter cigarettes of this invention are capable of exhibiting a somewhat constant smoking character at various air dilution levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.