Tobacco – Smoke separator or treater – By adding constituent to smoke stream
Patent
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.
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patent: 4388934 (1983-06-01), Luke
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patent: 4525161 (1985-06-01), Luke
Brown & Williamson Tobacco Corporation
Lamb Charles G.
Macey H.
Millin V.
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