Filter for a smoking article

Details Filter for a smoking article Filter for a smoking article

1987-07-13

1989-05-30

Millin, V.

Tobacco

Smoke separator or treater

By adding constituent to smoke stream

A24D 304

Patent

active

048341177

ABSTRACT:
A filter for a smoking article comprises a mouth-end section and a rod-end section, the opposed faces of which are so shaped that, on relative rotation they perform a camming action on each other, so that a variable volume air-smoke mixing chamber is formed. Ambient air passes into the air-smoke mixing chamber through perforations 22 in the wrapping.

REFERENCES:
patent: 3847161 (1974-11-01), Morgenstern
patent: 4527573 (1985-07-01), Hausermann
patent: 4601298 (1986-07-01), Nichols et al.

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