Tobacco – Tobacco users' appliance – Device used for smoking
Patent
1981-09-25
1983-02-15
Millin, V.
Tobacco
Tobacco users' appliance
Device used for smoking
131331, A24D 300, A24D 302, A24D 304
Patent
active
043735398
ABSTRACT:
The filtration route of tobacco smoke is increased by coiling a length of plastic tube filled with activated charcoal to form a coiled configuration similar to a coiled spring and placed between the conventional cellulose filter and the tobacco charge by using cigarette wrapping paper to form an assembled cigarette. While the tobacco charge remains close to the cellulose filter, the smoke from the burning tobacco charge starts its filtering route much farther away from the cellulose filter and as the smoke passes through the longer filtration route it is cooled by ambient air and completely filtered of all harmful tars. The coil configuration may also be constructed by casting the activated charcoal configuration as a core by utilizing a mold fabricated in two half sections. The coiled core is sprayed with a sealant to render it impervious to liquids and air and then inserted into a section of thin wall tube the length of the coiled core to protect the core from damage in handling. The section is then joined to the cellulose filter and tobacco charge. Another means of constructing the coiled configuration is to tap a length of lightweight plastic rod with a diameter the same as the diameter of a conventional cigarette with a "corkscrew" type thread through the longitudinal axis of the rod thus forming an elongated filtration route. The threaded coiled rod is filled with activated charcoal and then joined with the cellulose filter and the tobacco charge to form an assembled cigarette. A chemically treated wick to remove harmful tars may be used in lieu of activated charcoal when utilizing the plastic tube for the coiled configuration.
REFERENCES:
patent: 2462446 (1949-02-01), Wellborn
patent: 2848000 (1958-08-01), Herbster
patent: 3320960 (1967-05-01), Molins
patent: 3355317 (1967-11-01), Keith et al.
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