Smoking article mouthpieces

Details Smoking article mouthpieces Smoking article mouthpieces

1985-06-20

1987-07-07

Millin, V.

Tobacco

Smoke separator or treater

By adding constituent to smoke stream

131340, 131361, 493 43, A24D 302, A24D 304

Patent

active

046779965

ABSTRACT:
A cigarette filter element comprising at least one duct extending from one end to the other of the element, which element is operated on by a heated former moving relatively to it in a rotary fashion. The heated former serves to provide a cavity or annular groove through filtration material of the element. The cavity or groove also extends through a section of the duct to provide a ventilation channel. The duct at least one may be of a smoke-impermeable nature and may be provided by one or more bores or thermoplastic tubes.

REFERENCES:
patent: 2958328 (1960-11-01), Bartolomeo
patent: 3045680 (1962-07-01), Smith
patent: 3124143 (1964-03-01), Bartolomeo
patent: 3389705 (1968-06-01), Levavi
patent: 3678941 (1972-07-01), Dixon
patent: 4149546 (1979-04-01), Luke et al.
patent: 4273141 (1981-06-01), Jan Van Tilburg
patent: 4366826 (1983-01-01), Horsewell
patent: 4388934 (1983-06-01), Luke
patent: 4506683 (1985-03-01), Cantrell et al.
patent: 4525161 (1985-06-01), Luke

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