Tobacco – Tobacco users' appliance – Supports
Patent
1978-07-31
1981-03-03
Millin, V.
Tobacco
Tobacco users' appliance
Supports
131263, 131264, 131 107, 131 11, 131 10A, A24D 304
Patent
active
042534763
ABSTRACT:
A tobacco filter having a hollow cylindrical body which is preferably transparent, is provided with a plurality of small holes in its outer wall, and with a solid impermeable hit-stick coaxially positioned within the hollow body. A porous annular-shaped filter element surrounds the axial mid-part of the hit-stick. Impurities in tobacco smoke are removed by a process of hit-sticking extraction in the form of numerous black dots on the surface of the hit-stick as well as the result of automatic, rapid self-liquefication of the filter element. At one end of the hollow cylindrical body a filter tip is positioned to be held in the mouth of the smoker, and at the other end is a cigarette holding part for receiving and holding a conventional cigarette. The hit-sticking extraction results from air jets being drawn into an annularly shaped passageway located between the outer surface of the hit-stick and the inside surface of the hollow cylindrical body and through which smoke flows axially as the smoker draws on the filter.
REFERENCES:
patent: 2819720 (1958-01-01), Burbig
patent: 3172410 (1965-03-01), Miller
patent: 3240213 (1966-03-01), Miller
patent: 3270750 (1966-09-01), Campbell
patent: 3336928 (1967-08-01), Morehouse
patent: 3602232 (1971-08-01), Grauvogel
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