Cigarette filter

Details Cigarette filter Cigarette filter

1984-11-16

1986-04-29

Millin, V.

Tobacco

Smoke separator or treater

Interior surface causes particular flow characteristic

131338, 131361, A24D 304

Patent

active

045850151

ABSTRACT:
A filter for a cigarette has a porous filter rod with a channel extending longitudinally through the filter rod. The end of the filter at the tobacco column of the cigarette includes a partition having an orifice therethrough of a smaller cross-sectional area than the cross-sectional area of the channel to provide flow communication between the tobacco column and the channel. The partition further provides for the flow of smoke from the tobacco column into the filter wherein the smoke is diluted as it is being filtered by ventilation air entering the filter rod through an air permeable material circumscribing the filter rod.

REFERENCES:
patent: 3389705 (1968-06-01), Levavi
patent: 3777765 (1973-12-01), Yoshinaga
patent: 3860011 (1975-01-01), Norman

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