Cigarette filter

Details Cigarette filter Cigarette filter

1979-04-11

1981-03-17

Millin, Vincent

Tobacco

Cigar or cigarette making

Including cooperating surfaces to induce rolling

A24D 304

Patent

active

042561221

ABSTRACT:
A filter for a cigarette includes a porour filter rod circumscribed by a non-porous or smoke impervious wrapper wherein the filter rod with the non-porous wrapper therearound is provided with grooves extending from one end thereof a preselected distance longitudinally therealong. Tipping material circumscribes the non-porous wrapper and is provided with flow-through openings therein in flow communication with the grooves. The grooves may be oriented to extend to the mouth end of the filter when connected to a cigarette, to the tobacco end of the filter when connected to the cigarette, or non-connecting grooves which extend from each end of the filter element a preselected distance therealong.

REFERENCES:
patent: 3773883 (1973-11-01), Labbe et al.
patent: 3910288 (1975-10-01), Hammersmith et al.
patent: 3958579 (1976-05-01), Baker
patent: 4022221 (1977-05-01), Berger
patent: 4082098 (1978-04-01), Owens
patent: 4135523 (1979-01-01), Luke et al.

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