Adjustable air dilution cigarette exhibiting controlled pressure drop
US4649941A · kind A · utility
14Cited by
16References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1985 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Dec 16, 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 providing a mouthpiece which exhibits greater effective length at a low or non-air dilution setting than at a high air dilution setting. 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.