US3630210A - Smoking articles - Google Patents

Smoking articles Download PDF

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Publication number
US3630210A
US3630210A US859388A US3630210DA US3630210A US 3630210 A US3630210 A US 3630210A US 859388 A US859388 A US 859388A US 3630210D A US3630210D A US 3630210DA US 3630210 A US3630210 A US 3630210A
Authority
US
United States
Prior art keywords
passage
puff
smoke
filter
filter region
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US859388A
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English (en)
Inventor
Fred Haslam
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brown and Williamson Holdings Inc
Original Assignee
Brown and Williamson Tobacco Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brown and Williamson Tobacco Corp filed Critical Brown and Williamson Tobacco Corp
Application granted granted Critical
Publication of US3630210A publication Critical patent/US3630210A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/041—Tobacco smoke filters characterised by their shape or structure with adjustable means for modifying the degree of filtration of the filter

Definitions

  • a smoking article or attachment is provided with means by which a puffis divided automatically into a first portion and at least one later portion and the smoke portions produced are differentially and/or separately filtered.
  • the puff-dividing means may be a valve device subject to the suction produced by the puff and arranged to control the opening of a smoke passage additional to a constantly open smoke passage.
  • the constantly open passage opens into a high-density filter region and the additional passage into a lower-density filter region.
  • This invention concerns improvements relating to smoking articles, especially but not exclusively cigarettes.
  • a smoking article is provided with means by which a puff is divided automatically into a first portion and at least one later portion and the smoke portions produced are differentially filtered.
  • a device adapted for at tachmentto a conventional smoking article comprises means for dividing a puff of smoke automatically into a first portion and at least one later portion and filter means arranged to filter the smoke portions produced differentially.
  • the first smoke portion of the puff comprises the portion delivered during the first quarter to the first half of the duration of the puff.
  • FIGS. 1 and 2 are diagrammatic longitudinal sections through the said embodiments.
  • FIG 3 is a diagram in which pressure drop is plotted against time.
  • the complete smoking article shown comprises a tobacco-containing section 1, a valve section 2 and a filter section 3.
  • the section 1 may be of the nature of a conventional cigarette with tobacco 4 contained in a paper wrapping 5.
  • the section 2 comprises a short cylinder 6 of cigarette diameter made of metal or a plastics material and attached in abutting relation to the section 1 by an adhesive band 7.
  • a substantially complete narrow annular passage 8 or ring of narrow passages through the cylinder 6 near its periphery allows free flow of smoke during puffing.
  • a larger axial passage 9 through the cylinder 6 is connected by axially spaced radial ports 10, 11 to a further substantially annular passage 12 extending for a substantial distance, but not completely through, the length of the cylinder.
  • the axial passage 9 is normally obturated at the end adjacent to the section 1 by a resiliently loaded valve body.
  • the valve body comprises a ball or spherical plug 13 retained in the obturating position illustrated, i.e. upstream of the radial ports 10, by a light helical compression spring 14 disposed in the axial passage 9.
  • the filter section 3 secured in abutting relation to the section 2 by an adhesive band 15 comprises conventional fibrous or sheet tobacco-smoke-filtering material in a wrapper 16.
  • At least the peripheral region 17 of the filter adjacent to the exit orifice of the annular passage 8 is of higher density, or has higher smoke-retention properties, than the inner or axial region 18, from which it is separated by a cylindrical paper sleeve 17'. A higher pressure drop is produced in the region 17 than in the region 18. 1
  • the smoke produced during the earlier part of the puff is more strongly filtered, at 17, than thesmoke of the later part of the puff, at 18, whereby more efficient filtration and a more desirable composition of the smoke entering the smokers mouth can be ensured.
  • the smoking article of HG 2 differs from that of FIG. 1 in that the lower density inner filter region 18a is enclosed to the rear, as well as circumferentially, by the higher density filter material of the region 17a. A similar differential filtration effect is obtained.
  • FIG. 3 in which the pressure drop PD in smoking article in accordance with the invention is plotted against time T illustrates, in general profile only, an example of a two-portion puff comprising a brief, initial, high peak 19 followed by a maintained lower value 20 of the pressure drop.
  • the diagram is not dimensional, but the whole puff may, for the sake of example, be assumed to have a duration of about 2 seconds.
  • a filter device adapted to be inserted between the tobacco of a smoking article and the mouth of a smoker for automatically dividing a puff into a first portion and at least one later portion and differentially and separately filtering each portion comprising a filter section having first and second filter regions and a valve section positioned between the said filter section and the tobacco, said valve section including a constantly open smoke passage to the first filter region and an additional passage to the second filter region, said additional passage embodying a spring-loaded valve subject to the suction produced by the puff and positioned to control the opening of the additional passage.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
US859388A 1968-11-27 1969-09-19 Smoking articles Expired - Lifetime US3630210A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5632568 1968-11-27

Publications (1)

Publication Number Publication Date
US3630210A true US3630210A (en) 1971-12-28

Family

ID=10476341

Family Applications (1)

Application Number Title Priority Date Filing Date
US859388A Expired - Lifetime US3630210A (en) 1968-11-27 1969-09-19 Smoking articles

Country Status (6)

Country Link
US (1) US3630210A (es)
BE (1) BE740451A (es)
BR (1) BR6913299D0 (es)
CH (1) CH502075A (es)
GB (1) GB1265966A (es)
NL (1) NL159572B (es)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034765A (en) * 1975-10-30 1977-07-12 Liggett & Myers Incorporated Tobacco smoke filter
US4119105A (en) * 1977-01-31 1978-10-10 Olin Corporation Air flow limiting filter
US4517996A (en) * 1983-03-25 1985-05-21 Brown & Williamson Tobacco Corporation Ventilated filter and smoke dispersing mouthpiece
US4942887A (en) * 1987-06-15 1990-07-24 Fabriques De Tabac Reunies, S.A. Filter mouthpiece for a smoking article
US20080047571A1 (en) * 2006-07-12 2008-02-28 Philip Morris Usa Inc. Smoking article with plate impactor
WO2008110935A2 (en) * 2007-03-09 2008-09-18 Philip Morris Products S.A. Smoking article with valve
US20100288293A1 (en) * 2009-05-18 2010-11-18 Philip Morris Usa Inc. Smoking article with improved flow restriction element
US7878963B2 (en) 2006-03-28 2011-02-01 Philip Morris Usa Inc. Smoking article with a restrictor
US8109277B2 (en) 2007-03-09 2012-02-07 Philip Morris USA Inc, Smoking article filter with annular restrictor and downstream ventilation
US8235057B2 (en) 2007-03-09 2012-08-07 Philip Morris Usa Inc. Smoking article with open ended filter and restrictor
US20120272977A1 (en) * 2009-10-28 2012-11-01 Gerhard Malan Le Roux Flow Control Device For A Smoking Article
US8353298B2 (en) 2006-07-12 2013-01-15 Philip Morris Usa Inc. Smoking article with impaction filter segment
US8353302B2 (en) 2007-03-09 2013-01-15 Philip Morris Usa Inc. Smoking articles with restrictor and aerosol former
US8424539B2 (en) 2006-08-08 2013-04-23 Philip Morris Usa Inc. Smoking article with single piece restrictor and chamber
US8424540B2 (en) 2009-10-09 2013-04-23 Philip Morris Usa Inc. Smoking article with valved restrictor
US9138016B2 (en) 2010-03-26 2015-09-22 Philip Morris Usa Inc. Smoking articles with significantly reduced gas vapor phase smoking constituents

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1543043A (en) * 1923-03-07 1925-06-23 Allen Edgar Cigarette holder
US2850021A (en) * 1956-01-16 1958-09-02 Gadget Of The Month Club Inc Pipe adapter
US2890703A (en) * 1954-09-29 1959-06-16 Harlow B Grow Cigarette construction
US3348553A (en) * 1965-03-09 1967-10-24 Emkay Inc Smoker's mouthpiece
GB1094642A (en) * 1963-04-29 1967-12-13 Gyula Laszlo Torok Improvements in or relating to filters for tobacco smoke
US3463166A (en) * 1967-08-31 1969-08-26 John M Bennett Smokers' smoke treatment attachment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1543043A (en) * 1923-03-07 1925-06-23 Allen Edgar Cigarette holder
US2890703A (en) * 1954-09-29 1959-06-16 Harlow B Grow Cigarette construction
US2850021A (en) * 1956-01-16 1958-09-02 Gadget Of The Month Club Inc Pipe adapter
GB1094642A (en) * 1963-04-29 1967-12-13 Gyula Laszlo Torok Improvements in or relating to filters for tobacco smoke
US3348553A (en) * 1965-03-09 1967-10-24 Emkay Inc Smoker's mouthpiece
US3463166A (en) * 1967-08-31 1969-08-26 John M Bennett Smokers' smoke treatment attachment

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034765A (en) * 1975-10-30 1977-07-12 Liggett & Myers Incorporated Tobacco smoke filter
US4119105A (en) * 1977-01-31 1978-10-10 Olin Corporation Air flow limiting filter
US4517996A (en) * 1983-03-25 1985-05-21 Brown & Williamson Tobacco Corporation Ventilated filter and smoke dispersing mouthpiece
US4942887A (en) * 1987-06-15 1990-07-24 Fabriques De Tabac Reunies, S.A. Filter mouthpiece for a smoking article
US7878963B2 (en) 2006-03-28 2011-02-01 Philip Morris Usa Inc. Smoking article with a restrictor
US9060546B2 (en) 2006-03-28 2015-06-23 Philip Morris Usa Inc. Smoking article with a restrictor
US20080047571A1 (en) * 2006-07-12 2008-02-28 Philip Morris Usa Inc. Smoking article with plate impactor
US8353298B2 (en) 2006-07-12 2013-01-15 Philip Morris Usa Inc. Smoking article with impaction filter segment
US8424539B2 (en) 2006-08-08 2013-04-23 Philip Morris Usa Inc. Smoking article with single piece restrictor and chamber
WO2008110935A2 (en) * 2007-03-09 2008-09-18 Philip Morris Products S.A. Smoking article with valve
US8109277B2 (en) 2007-03-09 2012-02-07 Philip Morris USA Inc, Smoking article filter with annular restrictor and downstream ventilation
US8235057B2 (en) 2007-03-09 2012-08-07 Philip Morris Usa Inc. Smoking article with open ended filter and restrictor
US8353302B2 (en) 2007-03-09 2013-01-15 Philip Morris Usa Inc. Smoking articles with restrictor and aerosol former
US20090014020A1 (en) * 2007-03-09 2009-01-15 Philip Morris Usa Inc. Smoking article with valve
WO2008110935A3 (en) * 2007-03-09 2008-12-18 Philip Morris Prod Smoking article with valve
US20100288293A1 (en) * 2009-05-18 2010-11-18 Philip Morris Usa Inc. Smoking article with improved flow restriction element
US8424540B2 (en) 2009-10-09 2013-04-23 Philip Morris Usa Inc. Smoking article with valved restrictor
US20120272977A1 (en) * 2009-10-28 2012-11-01 Gerhard Malan Le Roux Flow Control Device For A Smoking Article
US8770206B2 (en) * 2009-10-28 2014-07-08 Tobacco Research And Development Institute (Proprietary) Limited Flow control device for a smoking article
US9138016B2 (en) 2010-03-26 2015-09-22 Philip Morris Usa Inc. Smoking articles with significantly reduced gas vapor phase smoking constituents

Also Published As

Publication number Publication date
DE1948336B2 (de) 1973-02-15
NL159572B (nl) 1979-03-15
NL6917072A (es) 1970-05-29
DE1948336A1 (de) 1970-06-11
GB1265966A (es) 1972-03-08
BE740451A (es) 1970-04-01
CH502075A (fr) 1971-01-31
BR6913299D0 (pt) 1973-02-01

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