Cigarette filter

Details Cigarette filter Cigarette filter

1973-10-30

1976-06-22

Michell, Robert W.

Tobacco

Cigar or cigarette making

Including cooperating surfaces to induce rolling

131217, 131262A, A24B 1502, A24D 104

Patent

active

039644936

ABSTRACT:
A filtered cigarette including a forward portion, a strainer and a filter, in which the filter is of molded plastic, having one or a plurality of surfaces provided with interconnected channels which provide long and tortuous paths through which the air-smoke mixture passes.
In one embodiment, the passageway of the filter is around the periphery of a hollow cylindrical core, covered by paper. This passageway comprises a plurality of circumferentially disposed axially spaced groover interconnected by axially extending connector channels. Islands or abutments at the discharge ends of certain air-smoke channels abruptly change the direction of flow of air-smoke mixture and separate it into separate streams which eventually are recombined.

REFERENCES:
patent: 2954780 (1960-01-01), Lebert
patent: 3270750 (1966-09-01), Campbell
patent: 3496946 (1970-02-01), Griffith

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