EP0033772A1 - Filter with a long smoke duct to render smoking less harmful - Google Patents

Filter with a long smoke duct to render smoking less harmful Download PDF

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Publication number
EP0033772A1
EP0033772A1 EP80107570A EP80107570A EP0033772A1 EP 0033772 A1 EP0033772 A1 EP 0033772A1 EP 80107570 A EP80107570 A EP 80107570A EP 80107570 A EP80107570 A EP 80107570A EP 0033772 A1 EP0033772 A1 EP 0033772A1
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Prior art keywords
filter
smoke
core
channel
jacket
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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.)
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EP80107570A
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German (de)
French (fr)
Inventor
Petrus Sarabèr
Egon Sarabèr
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SARABER EGON
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SARABER EGON
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Publication of EP0033772A1 publication Critical patent/EP0033772A1/en
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F13/00—Appliances for smoking cigars or cigarettes
    • A24F13/02—Cigar or cigarette holders
    • A24F13/04—Cigar or cigarette holders with arrangements for cleaning or cooling the smoke

Definitions

  • the invention relates to filter cartridges for smoking utensils, and cigarette or cigar tips, in which a filter core is integrated.
  • filter cartridges consist, for example, of absorbent material, those which contain chemicals of various types and compositions and others which consist of hollow cylinders which are pushed into one another. With some filter cartridges of this type, the smoke is led through narrow smoke passages in order to separate out tar and nicotine particles.
  • the object of the present invention is to implement a filter for the stated purpose, in which the criteria mentioned by Dr. Wenusch are not met on their own, but are also surpassed by further improvements and are so small that the filter does not exceed the customary dimensions .
  • the filter is composed of a filter core and a filter jacket, and the filter core is provided with radial, preferably rectangular incisions which, together with the inner wall of the filter jacket, form a long circumferential smoke channel.
  • a core length of 40 mm for example, a channel length of up to 500 mm can be easily implemented.
  • the smoke channel is such that the smoke during the passage of the filter describes a Kreisformige web to the end, either continuously or repeatedly alternately changed from the beginning of its direction by 340 0 and 180 0th As a result, the smoke is continuously rotated, which causes an intensive swirling of the smoke, which, together with the rectangular cross-section of the smoke duct, is about 20% larger than that of a round, straight smoke duct, not only for better tar deposition. and nicotine particles on the walls of the smoke channel, but also molecules of the gas phase, such as the highly toxic carbon monoxide, are bound and deposited.
  • small ventilation openings can be provided at the end of the filter.
  • means can be attached to the end of the filter jacket, which bring about additional cleaning.
  • the filter shown in longitudinal section in FIG. 1 and the cigarette holder according to FIG. 14 consist of a filter core 1 with a spiral cut 2 and the filter jacket 3, which according to FIG. 14 consists of a cigarette holder.
  • the tobacco smoke has free access from the Ziga - .retteneinsteckseite 4 to the - formed by the filter core incision 2 and filter jacket 3 - smoke channel 2.
  • the tobacco smoke continuously changes its direction through the spiral smoke channel 2 and at the end leaves the smoke outlet 6 through a narrow nozzle opening 5 Due to the fact that the smoke is not directed straight ahead but in a circle, no column of smoke can form which experience has shown would only touch the outside of the duct wall.
  • the filter shown in longitudinal section in FIG. 3 and in partial sections in FIGS. 6 to 9 consists of a filter core with radial parallel incisions 9 and the filter jacket 13.
  • the core incisions 9 between each two adjacent "lamellae" 10 are on one side of the axis 11 starting with a web 12 Fig. 7-9 closed to the lamella edge and together with the filter jacket 13 form the smoke channel.
  • smoke passages 14, 15 and 18, which can be of different shape and size, are arranged alternately to the right and left of the webs.
  • the mode of operation of this filter according to FIG. 3 is explained below with reference to FIGS. 6-9; the core incisions 9 form the smoke channel with the filter jacket 13.
  • the smoke is gnawed through the smoke passage 18 in the upper lamella 16, FIGS. 3 and 6, and comes directly into the intermediate space 9 formed by the two upper lamellae 10 and 16, where it is rotated about 340 ° to the left in a circle and known with a deflection of 180 ° through the smoke passage 14 Fig. 7 in the next space and will now turning to the right, in circles , through the smoke outlet 15 Fig.8 one step down again to be led. These processes are repeated until the smoke leaves the smoke duct through the smoke passage 18, FIGS. 3 and 9,
  • the smoke at the filter end is subjected to a final cleaning with the nozzle 5 or, according to FIG. 10, with a granulate filling 21 as an additional filter.
  • the carbon monoxide can also be detoxified even more by means of fresh air openings 7, FIGS. 11 and 14 provided at the end of the filter.
  • the filter with the laser core according to FIG. 3 described above results in better detoxification of the tobacco smoke than the filter with the spiral from Change of Smoke intensifies,

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  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

The filter, according to admitted scientific criteria (very long smoke channel, change in the speed and direction of smoke), allows an optimum detoxication of smoke. The filter is formed of a spiralled core or is constituted by slats (1) and a filter envelope (3). Some cuttings (9) form with the filter envelope a very long smoke channel reaching for instance a length of 600 mm. with a core length of 50 mm. In the usual filter cartridges the smoke channel is no longer than 55 mm. With the spiralled core (1) the smoke direction changes continuously and with the slat core the smoke direction will be alternatively changed by 180` and 340`. In both cases, smoke will be thoroughly stirred up so that the tar and the nicotine agglomerate in large particles which also retain some particles of poisonous gases such as carbon monoxide. The nicotine particles which retain gas molecules are confined near the edges of the smoke channel and are captured and rapidly eliminated. With the slat core, some small smoke passages within the individual slat cause a smoke acceleration by which the action is still reinforced. At the end of the channel, the residues of harmful substances may still be lessened by means of a nozzle (5) and some small inlet for fresh air (7). The filter may be shaped to serve as a cartridge for smoking implements or to form a cigarette filter.

Description

Die Erfindung betrifft Filterpatronen für Raucherutensilien, und zigaretten- bzw. Zigarrenspitzen, in denen ein Filterkern integriert ist.The invention relates to filter cartridges for smoking utensils, and cigarette or cigar tips, in which a filter core is integrated.

Es ist ein Vielzahl Filterpatronen bekannt, die zum Beispiel aus saugfähigem Material bestehen, solche, die Chemikalien verschiedener Art und Zusammenstellung enthalten und andere, die aus ineinandergeschobenen Hohlzylindern bestehen. Bei einige Filterpatronen dieser Art wird der Rauch durch enge Rauchdurchlässe geführt, um eine Abscheidung von Teer- und Nikotinpartikeln zu erreichen.A large number of filter cartridges are known which consist, for example, of absorbent material, those which contain chemicals of various types and compositions and others which consist of hollow cylinders which are pushed into one another. With some filter cartridges of this type, the smoke is led through narrow smoke passages in order to separate out tar and nicotine particles.

Die meisten der bekannten Filterpatronen bezwecken einzig eine Entnikotisierung des Rauches, ohne die Eliminierung der hochgiftigen Gase, insbesondere des Kohlenmonoxyds, zu berücksichtigen. Um das zu erreichen ist der Rauchweg bei diesen Filtern mit höchstens 55 mm viel zu kurz.Most of the known filter cartridges only have a nicotinization effect on the smoke, without taking into account the elimination of the highly toxic gases, especially carbon monoxide. To achieve this, the smoke path for these filters is much too short, at most 55 mm.

Die aus wissenschaftlichen Untersuchungen als notwendig erkannten Maßnahmen, um den Tabakrauch unschädlich zu machen, galten bisher als unrealisierbar und sind wohl deswegen bei den handelsüblichen Filterpatronen noch nicht verwirklicht worden.The measures identified from scientific studies as necessary to render tobacco smoke harmless were previously considered unrealizable and have therefore probably not yet been implemented with commercially available filter cartridges.

Richtungsweisend auf diesem Gebiete ist u.A. die anläßlich der " II Preisfrage des Luigi Bernhardini-Gedächtnis- Preisausschreibens " von Dr. Adolf Wenusch in,März 1942 eingereichte Schrift: " Durch welche Maßnahmen kann das Rauchen unschädlich gemacht werden ".In dieser Schrift sind die Voraussetzungen einer größtmög - lichen Ausfilterung der im Tabakrauch enthaltenen Schadstoffe klar umschreieben: 1. extrem langer Rauchweg, 2. Änderung der Rauchgeschwindigkeit und 3.Richtungsänderung des Rauchweges.Pioneering in this area is the occasion of the "II Prize Question of the Luigi Bernhardini Memorial Prize" by Dr. Written by Adolf Wenusch in, March 1942: "What measures can be taken to make smoking harmless?" In this document the requirements for the greatest possible filtering out of the pollutants contained in tobacco smoke are clearly described: 1. extremely long smoke path, 2. change in the Smoke speed and 3rd change of direction of the smoke path.

Aufgabe der vorliegenden Erfindung ist es, für den genannten Zweck ein Filter zu verwirklichen, bei dem die von Dr.Wenusch genannten Kriterien nicht allein erfüllt, sondern auch durch weitere Verbesserungen überboten werden und dabei so klein sind, daß das Filter die handelsüblichen Abmessungen nicht überschreitet.The object of the present invention is to implement a filter for the stated purpose, in which the criteria mentioned by Dr. Wenusch are not met on their own, but are also surpassed by further improvements and are so small that the filter does not exceed the customary dimensions .

Gelöst wird diese Aufgabe erfindungsgemäß dadurch, daß das Filter aus einem Filterkern und ein Filtermantel zusammengesetzt ist, und der Filterkern mit radialen, vorzugsweise rechteckigen Einschnitten versehen ist, die zusammen mit der Innenwandung des Filtermantels einen langen umlaufenden Rauchkanal bilden. So ist zum Beispiel bei einer Kernlänge von 40 mm ohne weiteres eine Kanallänge bis zu 500mm realisierbar.This object is achieved according to the invention in that the filter is composed of a filter core and a filter jacket, and the filter core is provided with radial, preferably rectangular incisions which, together with the inner wall of the filter jacket, form a long circumferential smoke channel. With a core length of 40 mm, for example, a channel length of up to 500 mm can be easily implemented.

Der Rauchkanal ist so beschaffen, daß der Rauch beim Durchgang des Filters eine Kreisformige Bahn beschreibt, die vom Anfang bis zum Ende entweder kontinuierlich oder mehrmals abwechselnd ihre Richtung um 3400 und 1800 verändert. Dadurch wird der Rauch ununterbrochen in eine Drehbewegung versetzt, die eine intensive Umwirbelung des Rauches bewirkt, was, zusammen mit dem rechteckigen Querschnitt des Rauchkanals um ca. 20% größeren Umfang als bei einem runden geraden Rauchkanal, nicht allein zu einer besseren Ablagerung der Teer- und Nikotinpartikel an den Wände des Rauchkanals führt, sondern es werden auch Moleküle der Gasphase, wie das hochgiftige Kohlenmonoxyd, gebunden und abgesetzt.The smoke channel is such that the smoke during the passage of the filter describes a Kreisformige web to the end, either continuously or repeatedly alternately changed from the beginning of its direction by 340 0 and 180 0th As a result, the smoke is continuously rotated, which causes an intensive swirling of the smoke, which, together with the rectangular cross-section of the smoke duct, is about 20% larger than that of a round, straight smoke duct, not only for better tar deposition. and nicotine particles on the walls of the smoke channel, but also molecules of the gas phase, such as the highly toxic carbon monoxide, are bound and deposited.

Um das Kohlenmonoxyd seine Giftigkeit noch mehr zu nehmen, können kleine Belüftungsöffnungen am Ende des Filters vorgesehen werden. Um nach Durchgang des Rauchkanals noch im Rauch verbliebene Teer-und Nikotinreste zu verringern, können am Ende des Filtermantels Mittel angebracht werden, die eine zusätzliche Reinigung bewirken. Mit einem Filter nach der Erfindung wird ein bisher nie erreichter Entgiftungsgrad des Rauches erreicht.In order to reduce the carbon monoxide's toxicity even further, small ventilation openings can be provided at the end of the filter. In order to reduce tar and nicotine residues still remaining in the smoke after passing through the smoke channel, means can be attached to the end of the filter jacket, which bring about additional cleaning. With a filter according to the invention, a degree of detoxification of the smoke that has never been achieved is achieved.

Der technische Fortschritt des vorliegenden Erfindungsgegenstands im Vergleich zu den bis jetzt bekannten Filtern ergibt sich aus dem sehr langen Rauchweg bei sehr geringen Abmessungen, mehrmaliger oder kontinuierlicher Richtungsänderung und wiederholter Geschwindigkeitsänderung des Rauches wodurch neben einer guten Nikotinab - scheidung auch die noch viel giftigere Gase unschädlicher gemacht werden.The technical progress of the subject of the present invention in comparison to the filters known up to now results from the very long smoke path with very small dimensions, repeated or continuous changes in direction and repeated changes in the speed of the smoke, which, in addition to good nicotine separation, also render the much more toxic gases harmless will.

Einzelheiten und Ausgestaltungen des vorliegenden Erfindungsgegenstandes ergeben sich aus der nachfolgenden Beschreibung der in der Zeichnung dargestellten Ausführungsbeispiele in Zusammenhang mit den Ansprüche.Details and configurations of the present subject matter of the invention result from the following description of the exemplary embodiments shown in the drawing in connection with the claims.

Es zeigen beispielsweise :

Figure imgb0001
For example:
Figure imgb0001

'Das in Fig.1 in Längsschnitt gezeigte Filter und die Zigarettenspitze nach Fig.14 bestehen aus einem Filterkern 1 mit spiralförmigem Einschnitt 2 und den Filtermantel 3, der nach Fig. 14 aus einer Zigarettenspitze besteht. Der Tabakrauch hat von der Ziga - .retteneinsteckseite 4 her freien Zugang zu dem - vom Filterkerneinschnitt 2 und Filtermantel 3 gebildeten - Rauchkanal 2. Der Tabakrauch durchläuft kontinuierlich seine Richtung verändernd den spiralförmigen Rauchkanal 2 und verläßt am Ende durch eine enge Düsenöffnung 5 den Rauchausgang 6. Dadurch, daß der Rauch nicht geradeaus, sondern im Kreise herumgeführt wird, kann sich keine Rauch - säule bilden, die erfahrungsgemäß nur mit der Aussenseite die Kanalwand berühren würde.The filter shown in longitudinal section in FIG. 1 and the cigarette holder according to FIG. 14 consist of a filter core 1 with a spiral cut 2 and the filter jacket 3, which according to FIG. 14 consists of a cigarette holder. The tobacco smoke has free access from the Ziga - .retteneinsteckseite 4 to the - formed by the filter core incision 2 and filter jacket 3 - smoke channel 2. The tobacco smoke continuously changes its direction through the spiral smoke channel 2 and at the end leaves the smoke outlet 6 through a narrow nozzle opening 5 Due to the fact that the smoke is not directed straight ahead but in a circle, no column of smoke can form which experience has shown would only touch the outside of the duct wall.

Durch die Kreisbewegung des Rauches wird der Rauch an den Wände des Rauchkanals fortwährend zurückgedrängt und dadurch gründlich durchgewirbelt, mit dem Erfolg, daß die Nebelteilchen des Rauches zusammen stoßen und zusammenkleben. Es bilden sich grössere und schwerere Teilchen, die leicht auf allen Begrenzungsflächen des Rauchkanals hängen bleiben. Auch Moleküle der hochgiftige Gase stoßen mit Nikotinteilchen zusammen, werden gebunden, und das führt zu einer rasche Eliminierung dieser gefährlichen Giftgase.Due to the circular movement of the smoke, the smoke on the walls of the smoke channel is constantly pushed back and thereby whirled through thoroughly, with the result that the smoke's mist particles collide and stick together. Larger and heavier particles form, which easily get stuck on all boundary surfaces of the smoke duct. Molecules of the highly toxic gases also collide with nicotine particles, are bound, and this leads to a rapid elimination of these dangerous toxic gases.

Das in Fig.3 in Längsschnitt und in Fig. 6 bis 9 in Teilschnitten dargestellte Filter besteht aus einem Filterkern mit radialen parallelen Einschnitte 9 und dem Filtermantel 13. Die Kernein - schnitte 9 zwischen jeweils zwei benachbarten "Lamellen" 10 sind an einer Seite von der Achse 11 ausgehend mit einem Steg 12 Fig. 7 - 9 bis zum Lamellenrand geschlossen und bilden zusammen mit dem Filtermantel 13 den Rauchkanal. Am Rande der Lamellen 10 sind ab - wechselnd rechts und links der Stege 12 Rauchdurchlässe 14,15 und 18 angebracht, die von verschiedener Form und Grösse sein können. Die Wirkungsweise dieses Filter nach Fig.3 wird anhand der Fig. 6 - 9 nachfolgend erklärt; die Kernsinschnitte 9 bilden mit dem Filtermantel 13 den Rauchkanal. Durch den Rauchdurchlaß 18 in der oberen Lamelle 16 Fig.3 und 6 wird der Rauch angenagen und kommt unmittelbar in den darunterliegender durch beiden oberen Lamellen 10 und 16 gebildeten Zwischenraum 9, wird dort um ca. 340° nach links drehend im Kreise herumgeführt und kannt mit einer Umlenkung von 180° durch den Rauchdurchlaß 14 Fig. 7

Figure imgb0002
in den nächsten Zwischenraum und wird
Figure imgb0003
nun nach rechts drehend, im Kreise
Figure imgb0004
, durch den Rauchdurchlaß 15 Fig.8 eine Stufe tiefer wieder
Figure imgb0005
geführt zu werden. Diese Vorgänge wiederholen sich merkmale, bis der Rauch durch den Rauchdurchlaß 18 Fig.3 und 9 den Rauchkanal verlässt,The filter shown in longitudinal section in FIG. 3 and in partial sections in FIGS. 6 to 9 consists of a filter core with radial parallel incisions 9 and the filter jacket 13. The core incisions 9 between each two adjacent "lamellae" 10 are on one side of the axis 11 starting with a web 12 Fig. 7-9 closed to the lamella edge and together with the filter jacket 13 form the smoke channel. At the edge of the lamellae 10, smoke passages 14, 15 and 18, which can be of different shape and size, are arranged alternately to the right and left of the webs. The mode of operation of this filter according to FIG. 3 is explained below with reference to FIGS. 6-9; the core incisions 9 form the smoke channel with the filter jacket 13. The smoke is gnawed through the smoke passage 18 in the upper lamella 16, FIGS. 3 and 6, and comes directly into the intermediate space 9 formed by the two upper lamellae 10 and 16, where it is rotated about 340 ° to the left in a circle and known with a deflection of 180 ° through the smoke passage 14 Fig. 7
Figure imgb0002
in the next space and will
Figure imgb0003
now turning to the right, in circles
Figure imgb0004
, through the smoke outlet 15 Fig.8 one step down again
Figure imgb0005
to be led. These processes are repeated until the smoke leaves the smoke duct through the smoke passage 18, FIGS. 3 and 9,

Eine stellenweise Verdichtung und

Figure imgb0006
der Rauches kann bei diesem Filter dadurch
Figure imgb0007
daß die Rauchdurchlässe 14 und 15 verschieden groß gewählt werden, wodurch die Filterwirkung noch verstärkt wird.A condensation in places and
Figure imgb0006
the smoke in this filter
Figure imgb0007
that the smoke outlets 14 and 15 are chosen to be different sizes, which further enhances the filter effect.

Bei der in Fig.3 dargestellten Filter wire der Rauch am Filterende noch einer Schlußreinigung mit der Düse 5 oder nach Fig. 10 mit einer Granulatfüllung 21 als zusatzfilter unterzogen. Durch am Ende des Filters angebrachten Fruschluftöffnungen 7, Fig.11 und 14 kann auch das Kohlenmonoxyd zusätzlich noch mehr entgiftet werden. Das hiervor beschriebene Filter mit dem Lasellenkern nach Fig.3 ergibt eine bessere Entgiftung des Tabakrauches als das Filter mit dem spiralförmigen

Figure imgb0008
von
Figure imgb0009
Änderung der
Figure imgb0010
Rauches verstärkt,
Figure imgb0011
In the filter shown in FIG. 3, the smoke at the filter end is subjected to a final cleaning with the nozzle 5 or, according to FIG. 10, with a granulate filling 21 as an additional filter. The carbon monoxide can also be detoxified even more by means of fresh air openings 7, FIGS. 11 and 14 provided at the end of the filter. The filter with the laser core according to FIG. 3 described above results in better detoxification of the tobacco smoke than the filter with the spiral
Figure imgb0008
from
Figure imgb0009
Change of
Figure imgb0010
Smoke intensifies,
Figure imgb0011

Claims (8)

1 Filter mit langem Rauchkanal, um das Rauchen unschädlicher zu machen , das aus einem Filterkern und einem Filtermantel besteht, dadurch gekennzeichnet, daß in dem zylindrischen Filterkern Einschnitte angebracht sind, die zusammen mit dem Filtermantel den Rauchkanal bilden.1 filter with a long smoke channel to make smoking harmless, which consists of a filter core and a filter jacket, characterized in that incisions are made in the cylindrical filter core, which together with the filter jacket form the smoke channel. 2 Filter nach Anspruch 1, dadurch gekennzeichnet, daß der Filterkerneinschnitt spiralförmig verläuft.2 Filter according to claim 1, characterized in that the filter core incision runs spirally. 3 Filter nach Anspruch 1, dadurch gekennzeichnet, daß in den Filterkern parallel zu einander verlaufende radiale Einschnitte so angebracht sind, daß ein Gebilde aus mehreren, hintereinander angeordneten Lamellen entsteht.3 Filter according to claim 1, characterized in that parallel radial cuts are made in the filter core so that a structure is formed from a plurality of lamellae arranged one behind the other. 4 Filter nach Anspruch 3, dadurch gekennzeichnet, daß die Zwischen - räume zwischen zwei benachbarten Lamellen jeweils an einer Seite, von der Achse bis zum Lamellenrand, durch Stege geschlossen sind und daß in den Lamellen abwechselnd links und rechts der Stege ein Rauchdurchlaß vorhanden ist.4 Filter according to claim 3, characterized in that the spaces between two adjacent lamellae are closed on one side, from the axis to the edge of the lamellae, by webs and that a smoke passage is alternately present on the left and right of the webs. 5 Filter nach Anspruch 1, dadurch gekennzeichnet, daß sich am Ende des Filtermantels ein Teer- und Nikotinabschneidender Düse befindet.5 Filter according to claim 1, characterized in that there is a tar and nicotine cutting nozzle at the end of the filter jacket. 6 Filter nach Anspruch 1, dadurch gekennzeichnet, daß in oder an dem Filtermantel Raum für ein Zusatzfilter vorhanden ist.6 Filter according to claim 1, characterized in that there is space in or on the filter jacket for an additional filter. 7 Filter nach Anspruch 1, dadurch gekennzeichnet, daß eine Zigaretten-oder Zigarrenspitze als Filtermantel dient, in der der Filterkern integriert ist.7 Filter according to claim 1, characterized in that a cigarette or cigar tip serves as a filter jacket in which the filter core is integrated. 8 Filter nach Anspruch 1, dadurch gekennzeichnet, das im Filtermantel kleine Öffnungen für Frischluftzufuhr angebracht sind.8 Filter according to claim 1, characterized in that small openings for fresh air supply are provided in the filter jacket.
EP80107570A 1980-02-08 1980-12-04 Filter with a long smoke duct to render smoking less harmful Withdrawn EP0033772A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1010/80 1980-02-08
CH101080A CH631060A5 (en) 1980-02-08 1980-02-08 LONG SMOKE CHANNEL FILTER.

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EP0033772A1 true EP0033772A1 (en) 1981-08-19

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EP80107570A Withdrawn EP0033772A1 (en) 1980-02-08 1980-12-04 Filter with a long smoke duct to render smoking less harmful

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EP (1) EP0033772A1 (en)
JP (1) JPS57502199A (en)
CH (1) CH631060A5 (en)
WO (1) WO1981002244A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0109608A1 (en) * 1982-11-13 1984-05-30 Petrus Sarabèr Filter for tobacco products and smoking utensils
WO2008068458A1 (en) 2006-12-05 2008-06-12 British American Tobacco (Investments) Limited Tobacco smoke filter and methods of making the same
CN105707984A (en) * 2016-04-20 2016-06-29 云南中烟工业有限责任公司 Airway radial layered cigarette holder
US20190090534A1 (en) * 2017-09-26 2019-03-28 Krutch Waves, Inc. Spiral-shaped enhanced draw tip/crutch for loose leaf cigarettes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3900266A1 (en) * 1989-01-07 1990-07-12 Karl Eickmann Toxin remover, particularly for smokers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1284242A (en) * 1961-03-15 1962-02-09 Filtering device for cigarette holder and others

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE586839C (en) * 1933-10-26 Georg Rueckmann Cigar, cigarette holder or pipe mouthpiece
FR378550A (en) * 1907-04-09 1907-10-08 Charles Elkin Smoking pipe
GB155189A (en) * 1920-07-29 1920-12-16 Walter Everett Molins An improved baffle for tobacco pipes, cigar and cigarette holders
BE351912A (en) * 1928-06-14
BE470746A (en) * 1945-04-14
FR1027072A (en) * 1950-10-31 1953-05-07 Condenser-filter applicable to pipes, cigarette holders and cigar holders
FR1226032A (en) * 1959-05-06 1960-07-06 Smoke cooler for cigarette holders or pipes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1284242A (en) * 1961-03-15 1962-02-09 Filtering device for cigarette holder and others

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0109608A1 (en) * 1982-11-13 1984-05-30 Petrus Sarabèr Filter for tobacco products and smoking utensils
WO2008068458A1 (en) 2006-12-05 2008-06-12 British American Tobacco (Investments) Limited Tobacco smoke filter and methods of making the same
CN105707984A (en) * 2016-04-20 2016-06-29 云南中烟工业有限责任公司 Airway radial layered cigarette holder
CN105707984B (en) * 2016-04-20 2019-08-09 云南中烟工业有限责任公司 A kind of cigarette holder of air flue radially layered formula
US20190090534A1 (en) * 2017-09-26 2019-03-28 Krutch Waves, Inc. Spiral-shaped enhanced draw tip/crutch for loose leaf cigarettes

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Publication number Publication date
JPS57502199A (en) 1982-12-16
CH631060A5 (en) 1982-07-30
WO1981002244A1 (en) 1981-08-20

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