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    ADJUSTABLE CIGARETTE FILTER
    4.
    发明专利
    ADJUSTABLE CIGARETTE FILTER 未知

    公开(公告)号：AU593596B2

    公开(公告)日：1990-02-15

    申请号：AU6538086

    申请日：1986-11-19

    Applicant: PHILIP MORRIS PROD

    Inventor： NICHOLS WALTER ALLEN

    IPC: A24D1/04 ,  A24D3/04

    Abstract: A variable dilution cigarette (40), of the type having a filter (42) with two relatively rotatable segments (44,45) having slits (62,63), (60,61) in the plug wrapping (52) and the tipping paper (43) which rotate in and out of rotational registry to vary the dilution level, is provided which is insensitive to slight longitudinal misalignment of the slits. An array of longitudinal depressions (50) is formed in one segment of the filter plug centered on the slit in the plug wrapping and ending short of both ends of the filter segment containing the slit. The depressions act as a plenum allowing the longitudinal flow of air between the slit in the tipping paper and the slit in the plug wrapping in case of longitudinal misalignment arising during use, but do not allow circumferential air flow when the slits are intentionally deregistered by relative rotation of the filter segments. Because the depressions do not reach the ends of the filter segment containing the slit, they do not allow any unwanted air into the filter.

    FILTER CIGARETTES WTH ADJUSTABLE DRAW
    5.
    发明专利
    FILTER CIGARETTES WTH ADJUSTABLE DRAW 未知

    公开(公告)号：AU1965783A

    公开(公告)日：1984-04-05

    申请号：AU1965783

    申请日：1983-09-28

    Applicant: PHILIP MORRIS PROD

    Inventor： HOUCK WILLIE GRAY ,  NICHOLS WALTER ALLEN ,  NEWSOME REGINALD WAYNE

    IPC: A24D1/04 ,  A24D3/04 ,  A24D3/14 ,  A24D3/18

    Abstract: A filter cigarrette is provided which is adjustable to provide a wide range of air dilution and/or resistance to draw values and which comprises a tobacco rod 1, a substantially cylindrical filter plug and substantially air impermeable tipping paper 11. The filter plug comprises a first, mouth-end segment 7 and a second, axially aligned, rod-end segment 3 spaced apart from the first segment. The wrapping, which is substantially air impereable, circumscribes the first and second segments defining a substantially cylindrical void 8 therebetween which may include means for releasing varying amounts of a flavourant. The first segment is movable towards the second segment thereby compressing the plug wrap between the segments which decreases the volume of the void and increases the resistance to draw value of the cigarette. Variable air dilution may be achieved by providing at least one opening 17 in the tipping paper and at least one opening 19 in the underlying plug wrap positioned such that, as the first segment is moved axially towards the second segment, the first and second openings are moved into varying degrees of registry thereby emitting varying amounts of air to the filter.

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