Tobacco – Smoke separator or treater – By adding constituent to smoke stream
Patent
1985-11-29
1987-02-17
Millin, Vincent
Tobacco
Smoke separator or treater
By adding constituent to smoke stream
131340, A24D 304
Patent
active
046432060
ABSTRACT:
A filter for a cigarette includes a porous filter rod having a capillary smoke passageway extending coaxially therethrough. The filter rod is circumscribed by a non-porous wrapper and the filter rod with the non-porous wrapper therearound is provided with at least one groove extending from one end thereof a preselected distance longitudinally therealong. The groove preferably extends from the mouth end of the filter rod. Tipping material circumscribes the non-porous wrapper and is provided with flow-through openings therein in flow communication with the groove. In one embodiment, the filter rod includes a cylindrical collar coaxially located at the mouth end defining a recess, the thickness of the wall of the collar being less than the depth of the groove. In a further embodiment, the filter collar includes a concentric open core member coaxial with and open to the capillary flow passageway with the area between the core member and collar wall being open to the groove. In a still further embodiment, the filter rod includes a cylindrical filter collar located at the mouth end defining a recess, the filter collar covering the open end of the groove at the mouth end of the filter rod.
REFERENCES:
patent: 3010457 (1961-11-01), Schubert
patent: 3356094 (1967-12-01), Ellis et al.
patent: 3396733 (1968-08-01), Allseits et al.
patent: 4022222 (1977-05-01), Berger
patent: 4342322 (1982-08-01), Sanford
patent: 4343319 (1982-08-01), Cantrell
patent: 4481959 (1984-11-01), Byrne
patent: 4564030 (1986-01-01), Jessup et al.
Frank Dorothy M.
Reynolds Martin L.
Riehl Tilford F.
Brown & Williamson Tobacco Corporation
Lamb Charles G.
Macey H.
Millin Vincent
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