Smoking article with improved fuel element
US4989619A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1986 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Dec 9, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24F42/60
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present invention preferably relates to a smoking article which is capable of producing substantial quantities of aerosol, both initially and over the useful life of the product, without significant thermal degradation of the aerosol former and without the presence of substantial pyrolysis or incomplete combustion products or sidestream aerosol. The article of the present invention is able to provide the user with the sensations and benefits of cigarette smoking without the substantial combustion products produced by burning tobacco in a conventional cigarette. In addition, the article may be made virtually ashless so that the user does not have to remove any ash during use. Preferred embodiments of the present smoking article comprise a short combustible carbonaceous fuel element, a heat stable, preferably particulate alumina, substrate bearing an aerosol forming substance, an efficient insulating means, and a relatively long mouthend piece. The fuel element is provided with a plurality of peripheral passageways i.e., passageways on the outer surface of the fuel element and/or just beneath the surface of the fuel element, which provides heat transfer from the burning fuel elem…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.