Cigarette with automatic ventilation valve

Details Cigarette with automatic ventilation valve Cigarette with automatic ventilation valve

1984-02-14

1986-10-07

Millin, V.

Tobacco

Tobacco users' appliance

Device used for smoking

131206, 1312153, A24D 304

Patent

active

046153446

ABSTRACT:
A cigarette is provided with an automatic valve responsive to the moisture content of the smoke for controlling induction of air into the smoke thereby compensating for the increase of nicotine concentration as the cigarette smokes down. The valve utilizes a bilamellar strip having sides of different hydrophilic character and distorting as a result of elongation of the more hydrophilic side.

REFERENCES:
patent: 2166172 (1939-07-01), Modine
patent: 2233287 (1941-02-01), Modine
patent: 2233288 (1941-02-01), Modine
patent: 2264626 (1941-12-01), Dunwoodie
patent: 3441028 (1969-04-01), Wall

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