Tobacco – Cigar or cigarette making – Including cooperating surfaces to induce rolling
Patent
1973-10-26
1976-05-25
Michell, Robert W.
Tobacco
Cigar or cigarette making
Including cooperating surfaces to induce rolling
131261B, 131216, A24B 1502, A24B 1527
Patent
active
039585794
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 grooves 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.
Another embodiment includes a flat wafer core inserted into a cylindrical housing which covers the transverse and longitudinal channels formed in both sides of the wafer. Holes or aperture interconnect certain channels of one side of the wafer with certain channels of the opposite side.
Modifications of the second embodiment include angularly disposed channels to create turbulence and ragged passageway walls to retain the solids in the smoke.
Still another embodiment includes a plurality of stacked or laminated wafers forming a composite filter, the passageways of one wafer thereof communicating with the passageways of the next wafer, etc.
REFERENCES:
patent: 261169 (1882-07-01), Munson
patent: 864076 (1907-08-01), Buse
patent: 973870 (1910-10-01), Matson
patent: 1877925 (1932-09-01), Martin
patent: 3552399 (1971-01-01), Andreas
patent: 3626952 (1971-12-01), Mysels
patent: 3631864 (1972-01-01), Beard
patent: 3631867 (1972-01-01), Beard
patent: 3651819 (1972-03-01), Beard
patent: 3667481 (1972-06-01), Thomas
Baker-Alpha Corporation
Michell Robert W.
Millin V.
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