Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3508558 A
Publication typeGrant
Publication dateApr 28, 1970
Filing dateMar 19, 1969
Priority dateMar 19, 1969
Publication numberUS 3508558 A, US 3508558A, US-A-3508558, US3508558 A, US3508558A
InventorsSeyburn Bernard M
Original AssigneeSeyburn Bernard M
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Cigarette filter
US 3508558 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

April 28, 1970 B. M. SEYBURN CIGARETTE FILTER Filed March 19, 1969 II \Q I IIAI' II/IAI'II/III INVENTOR BERNARD M. SEYBURN I flvm 4/ ATTORNEYS United States Patent O US. Cl. 131261 3 Claims ABSTRACT OF THE DISCLOSURE A smoke filtering element for cigarettes comprises a water filled resilient inner capsule substantially but not completely filling the interior of a resilient outer capsule. The outer capsule has a smoke inlet port at one end and a smoke outlet port at the other end, these ports being eccentrically located on diametrically opposite sides of the outer capsule axis, to create a swirling flow pattern to the smoke as it passes through the annular space between the two capsules. The water may be released at the time the cigarette is lit by squeezing together the sides of the two capsules, thus forcing water out of tiny orifices in the inner capsule to coat the interior surface of the outer capsule and the exterior surface of the inner capsule. Upon squeezing, the capsules are temporarily deformed and return to their original shape thereafter for repeated squeezing and release of additional water as desired.

This invention relates to water type smoke filters for cigarettes.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal cross-sectional view of a conventional cigarette provided with the filter of this invention.

FIG. 2 is an enlarged longitudinal cross-sectional view of the filter of this invention.

FIG. 3 is an end view of the filter of FIG. 2.

FIG. 4 is a cross-sectional view of the filter of FIG. 2, viewed in the direction of arrows 44 of FIG. 2.

vFIG. 5 is a partial cross-sectional view of the outer capsule of a modified filter.

DETAILED DESCRIPTION OF THE INVENTION Referring to FIG. 1 of the drawings, there is illustrated a cigarette having the improved filter 12 of this invention at one end, with the substantial portion of the length of the cigarette being packed with tobacco 14. The entire assembly is wrapped in conventional cigarette paper 16, with an adhesive bonding the filter 12 to the paper to retain it within the cigarette. A thin porous separator disk 18, fabricated of paper or sponge or any other suitable material, separates filter 12 from tobacco 14.

As is best illustrated in FIGS. 2 through 4, filter 12 generally comprises a hollow cylindrical outer capsule 20, the interior of which is substantially but not entirely occupied by a hollow inner capsule 22 filled with water 24. The ends of outer capsule are enclosed by end walls 26, each of which has an elongated port 28 of small diameter formed therein. In the illustration the left end would represent the smoke inlet port and the right end the smoke outlet port. It will be now understood that porous disk 18 prevents any tobacco from blocking smoke inlet port 28. Typical overall dimensions for the body of outer capsule 20 could be about A" diameter and 1 in length.

Inner capsule 22 has a series of small projections spaced around and along its exterior, to preserve the concentricity between the two capsules, so that a fully open annular space is maintained between the two capsules. Inner capsule 22 is further provided with a plurality of tiny orifices 32, shown in exaggerated proportion in FIGS. 2 and 4, which are sufficiently small that the surface ten- "ice sion of the water effectively blocks the orifices to normally prevent leakage or evaporation of water from the inner capsule.

Both the inner and outer capsules are fabricated of a substantially rigid but resilient material, such as vinyl. The resiliency is necessary so that when the side walls of outer capsule 20 are squeezed together at the time of use, thus partially collapsing the side walls of both capsules, both capsules will return to their original shape and position after release of pressure, so as to re-establish the necessary annular space between the two capsules. A material such as vinyl is soft enough that tiny orifices actually effectively reseal themselves following puncture during fabrication thus further assuring the normal seal prior to activation by squeezing.

In use, the smoker squeezes together or bites the filter end of the cigarette immediately prior to lighting up. This collapses the side walls of outer capsule 20, with this deformation being transmitted to the side walls of inner capsule 22 by means of projections 30. As inner capsule 22 collapses, the water is forcefully expelled through the minute orifices 32. The water sprays out and coats at least some of the inner surface of outer capsule 20 and at least some of the outer. surface of inner capsule 22. There is little tendency for the water to escape from outer capsule 20 via inlet or outlet port 28, because the surface tension of the water effectively blocks such ports due to their small diameter and relatively large length. Thus, there is no danger of the water soaking the tobacco or leaking out into the smokers mouth.

Once the cigarette is lit, the inhaling action by the smoker draws the smoke through port 28 at the left end of filter 12 and into the interior of outer capsule 20. The smoke flows through the annular space between the capsules, and out through the outlet port 28 at the right end of the filter.

An important feature of this invention is that the smoke establishes a swirl or spiral flow pattern through this annular space. This attern is assured by reason of the unique design of this filter. In the first place, inlet and outlet ports 28 are eccentrically located relative to the central longitudinal axis of outer capsule 20', and are located on diametrically opposite sides of such axis. Secondly, inner capsule 22 is long enough to substantially fill the length of outer capsule 20. Thus, when smoke enters the inlet port, it immediately strikes the left end of inner capsule 22, and is deflected to the annular space between the two capsules. Since the smoke must exit on the diametrically opposite side of this annular space, the smoke assumes a spiral swirling pattern around the outside of inner capsule 22. Since some of the exterior surface of inner capsule 22 and some of the inner surface of outer capsule 20 are both coated with a film of water, the smoke is in effect washed by this water as it travels through this annular gap, thus removing a substantial portion of the nicotine and tars therefrom.

The filtering and coating process begins immediately as the smoke enters the filter. The hot smoke strikes the water-coated surfaces of the interior of the outer capsule, causing a substantial immediate deposition of nicotine and tars and a substantial cooling of the smoke. Continued deposition and cooling occurs as the smoke swirls along the length of the filter.

Not only is the smoke cooler but it is also humidified prior to entering the smokers mouth. Since conventional filters generally reduce smoke humidity, and since the smoking process bypasses the humidifying function of the human nose, this feature of the filter of this invention substantially reduces the irritation caused by the smoke.

While liquid-filled cigarette filters are not new, the improvement of the present invention lies in the completeness of the washing, filtering, cooling andlhumidifying action. These results are enhanced by the fact that the water is exposed directly to the smoke, over a large area, rather than in the form of a moisture laden absorbent medium.

The relatively small size of inlet and outlet ports 28 and the relatively small cross-sectional area of the annular space within the outer capsule combine to reduce the volume of smoke entering the smokers mouth, without unduly increasing the difficulty of drawing.

By way of minor modifications of the above described embodiment, projections 30 could alternatively be formed on the inner surface of outer capsule 20, the important factor being only the establishment and maintenance of a full annular gap. Also, some type of supplementary thin disc-like wad could close off the right end of the cigarette, to conceal filter 12. Furthermore, the water or other liquid in the inner capsule can be flavored or scented if desired. Rather than utilizing minute orifices in the inner capsule to normally seal the capsule, a frangible or rupturable construction could be used, designed to rupture when squeezed.

A modified version of the improved filter 34 is illustrated in FIG. 5, wherein the left end of outer capsule 36 is illustrated, the right end being similarly constructed. End wall 38 is provided with inlet port 40, as in the embodiment of FIGS. 1-4. The inner capsule (not illus- 1 trated) would be identical to that of the above described capsule.

This invention may be further developed within the scope of the following claims. Accordingly, the above specification is to be interpreted as illustrative of only two operative embodiments of this invention, rather than in a strictly limited sense.

I now claim: 1. A tobacco smoke filtering element for use in a cigarette or the like, comprising:

an elongated hollow cylindrical outer capsule having enclosing end walls at its respective ends, each end wall having a single entry port to permit fiow of smoke through said outer capsule, the diameter of said ports being small relative to the inner diameter of said outer capsule, and said ports being eccentrically located on diametrically opposite sides of the axis of said outer capsule;

an elongated hollow cylindrical inner capsule disposed within said outer capsule and dimensioned so as to substantially but not completely fill both the inner diameter and inner length of said outer capsule, said inner capsule having releasably sealed openings and being normally filled with water normally sealed therein, said water being selectively and repeatedly manually releasable therefrom; spacer means within said filtering element to maintain said inner capsule concentric with said outer capsule to establish a full annular space between the outer surface of said inner capsule and the inner surface of said outer capsule; said inner and outer capsules being both fabricated of resilient material, whereby the application of a radial squeezing force on the sides of said outer capsule causes local and temporary inward deformation of said outer capsule, the collapse of which in turn similarly applies a squeezing and temporary deforming force to said inner capsule to expel the water therefrom through said releasably sealed openings and cause said water to coat at least a portion of the inner Walls of said outer capsule and a portion of the outer walls of said inner capsule, both capsules returning to their original shape thereafter for subsequent squeezing and release of additional water as desired. 2. The filtering element of claim 1 wherein said inner capsule releasably sealed openings comprise a plurality of minute orifices spaced along its side walls, said orifices being small enough to normally prevent leakage or evaporation of water from said inner capsule.

3. The filtering element of clair 1 wherein the surfaces of at least one of the capsules defining said annular space are helically grooved.

References Cited UNITED STATES PATENTS 455,614 7/1891 Gonzalez.

3,125,100 3/1964 Jany.

3,297,038 1/1967 Homburger 13110.5 3,334,636 8/1967 Zuber 13110.1 3,366,121 1/1968 Carty 131l0.1 3,388,707 6/1968 Harris 131261 3,428,049 2/ 1969 Leake et a1. 1319 X SAMUEL KOREN, Primary Examiner J. H. CZERWONKY, Assistant Examiner US. Cl. X.R.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US455614 *Mar 6, 1891Jul 7, 1891 Sivioking device
US3125100 *Mar 4, 1960Mar 17, 1964 Filter cartridge for cigarette holders
US3297038 *Apr 20, 1964Jan 10, 1967Freddy HomburgerFilter cigarette
US3334636 *Jun 23, 1964Aug 8, 1967Zuber Alexander AFilter for smokers' article
US3366121 *Dec 15, 1964Jan 30, 1968H 2 O Filter CorpFilter cigarettes
US3388707 *May 17, 1965Jun 18, 1968Walter HarrisTobacco smoke filter
US3428049 *Dec 21, 1965Feb 18, 1969American Tobacco CoTobacco smoke filter element
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3854488 *Feb 13, 1973Dec 17, 1974Terasaki KCigarette holder with tar collecting means
US3884246 *Jan 16, 1973May 20, 1975Walker Eric EOptional dry or liquid filter
US4765347 *May 9, 1986Aug 23, 1988R. J. Reynolds Tobacco CompanyAerosol flavor delivery system
US4945928 *Mar 13, 1989Aug 7, 1990Rose Jed ESmoking of regenerated tobacco smoke
US7115085Sep 12, 2003Oct 3, 2006R.J. Reynolds Tobacco CompanyMethod and apparatus for incorporating objects into cigarette filters
US7479098Sep 23, 2005Jan 20, 2009R. J. Reynolds Tobacco CompanyEquipment for insertion of objects into smoking articles
US7578298Feb 4, 2005Aug 25, 2009Philip Morris Usa Inc.Flavor capsule for enhanced flavor delivery in cigarettes
US7654945Aug 4, 2006Feb 2, 2010R.J. Reynolds Tobacco CompanyMethod and apparatus for incorporating objects into cigarette filters
US7793665Aug 14, 2006Sep 14, 2010R.J. Reynolds Tobacco CompanyFiltered cigarette incorporating a breakable capsule
US7833146Dec 23, 2009Nov 16, 2010R.J. Reynolds Tobacco CompanyMethod and apparatus for incorporating objects into cigarette filters
US7836895Jun 23, 2003Nov 23, 2010R. J. Reynolds Tobacco CompanyFiltered cigarette incorporating a breakable capsule
US7972254Jun 11, 2007Jul 5, 2011R.J. Reynolds Tobacco CompanyApparatus for inserting objects into a filter component of a smoking article, and associated method
US7984719Oct 12, 2010Jul 26, 2011R. J. Reynolds Tobacco CompanyFiltered cigarette incorporating a breakable capsule
US8066011Sep 30, 2003Nov 29, 2011R. J. Reynolds Tobacco CompanyFiltered cigarette incorporating an adsorbent material
US8142339Oct 19, 2010Mar 27, 2012R.J. Reynolds Tabacco CompanyMethod and apparatus for incorporating objects into cigarette filters
US8186359Feb 1, 2008May 29, 2012R. J. Reynolds Tobacco CompanySystem for analyzing a filter element associated with a smoking article, and associated method
US8262550Mar 19, 2009Sep 11, 2012R. J. Reynolds Tobacco CompanyApparatus for inserting objects into a filter component of a smoking article
US8308623Oct 28, 2008Nov 13, 2012R.J. Reynolds Tobacco CompanyApparatus for enhancing a filter component of a smoking article, and associated method
US8470215Jan 25, 2008Jun 25, 2013R. J. Reynolds Tobacco CompanyProcess for manufacturing breakable capsules useful in tobacco products
US8475348Sep 28, 2010Jul 2, 2013Aiger Group AgApparatus and method for assembly of multi-segment rod-like articles
US8512213Feb 20, 2012Aug 20, 2013R.J. Reynolds Tobacco CompanyMethod and apparatus for incorporating objects into cigarette filters
US8574141Aug 9, 2012Nov 5, 2013R.J. Reynolds Tobacco CompanyApparatus for inserting objects into a filter component of a smoking article
US8622882Sep 27, 2010Jan 7, 2014Aiger Group AgApparatus and method for insertion of capsules into filter tows
US8739802Oct 2, 2006Jun 3, 2014R.J. Reynolds Tobacco CompanyFiltered cigarette
US8808153Jul 14, 2009Aug 19, 2014Aiger Group AgApparatus for assembly of multi-segment rod-like articles
US8882647Dec 8, 2008Nov 11, 2014R.J. Reynolds Tobacco CompanyEquipment for insertion of objects into smoking articles
US9028385Dec 1, 2011May 12, 2015R.J. Reynolds Tobacco CompanyEquipment for insertion of objects into smoking articles
US9131730Jan 7, 2010Sep 15, 2015Aiger Group AgSystem and apparatus for registration of different objects in rod shaped articles
US9210952May 31, 2011Dec 15, 2015R.J. Reynolds Tobacco CompanyApparatus for inserting objects into a filter component of a smoking article, and associated method
US9247770Aug 9, 2012Feb 2, 2016R.J. Reynolds Tobacco CompanyMethod of forming a rod for use in the manufacture of cigarette filters
US9282768Jun 20, 2013Mar 15, 2016R.J. Reynolds Tobacco CompanyMethod and apparatus for incorporating objects into cigarette filters
US9398777Jun 20, 2013Jul 26, 2016R.J. Reynolds Tobacco CompanyEquipment for insertion of objects into smoking articles
US9486010Oct 3, 2013Nov 8, 2016R. J. Reynolds Tobacco CompanyApparatus for inserting objects into a filter component of a smoking article
US9554594Oct 24, 2011Jan 31, 2017R.J. Reynolds Tobacco CompanyFiltered cigarette incorporating an adsorbent material
US20040261807 *Jun 23, 2003Dec 30, 2004Dube Michael FrancisFiltered cigarette incorporating a breakable capsule
US20050066982 *Sep 30, 2003Mar 31, 2005Clark Melissa AnnFiltered cigarette incorporating an adsorbent material
US20050070409 *Sep 12, 2003Mar 31, 2005Deal Philip AndrewMethod and apparatus for incorporating objects into cigarette filters
US20060174901 *Feb 4, 2005Aug 10, 2006Philip Morris Usa Inc.Flavor capsule for enhanced flavor delivery in cigarettes
US20060272663 *Aug 14, 2006Dec 7, 2006Dube Michael FFiltered cigarette incorporating a breakable capsule
US20060293157 *Aug 4, 2006Dec 28, 2006R.J. Reynolds Tobacco CompanyMethod and apparatus for incorporating objects into cigarette filters
US20070068540 *Sep 23, 2005Mar 29, 2007Thomas Timothy FEquipment for insertion of objects into smoking articles
US20080302373 *Jun 11, 2007Dec 11, 2008R.J. Reynolds Tobacco CompanyApparatus for Inserting Objects into a Filter Component of a Smoking Article, and Associated Method
US20090277465 *Jul 21, 2009Nov 12, 2009Philip Morris Usa Inc.Flavor capsule for enhanced flavor delivery in cigarettes
US20100101589 *Oct 28, 2008Apr 29, 2010John Larkin NelsonApparatus for enhancing a filter component of a smoking article, and associated method
US20100294290 *Jan 25, 2008Nov 25, 2010Wenhui ZhangProcess for manufacturing breakable capsules useful in tobacco products
US20110011412 *Jul 14, 2009Jan 20, 2011Aiger Engineering, Ltd.Apparatus and method for assembly of multi-segment rod-like articles
US20110023896 *Oct 12, 2010Feb 3, 2011R. J. Reynolds Tobacco CompanyFiltered cigarette incorporating a breakable capsule
US20110059831 *Oct 19, 2010Mar 10, 2011R.J. Reynolds Tobacco CompanyMethod and apparatus for incorporating objects into cigarette filters
US20110162662 *Jan 5, 2010Jul 7, 2011Aiger Group AgApparatus and method for insertion of capsules into filter tows
US20110162665 *Jan 7, 2010Jul 7, 2011Aiger Group AgMethod, system and apparatus for registration of different objects in rod shaped articles
US20110180084 *Jan 27, 2010Jul 28, 2011R.J. Reynolds Tobacco CompanyApparatus and associated method for forming a filter component of a smoking article
US20110230320 *May 31, 2011Sep 22, 2011R.J. Reynolds Tobacco CompanyApparatus for inserting objects into a filter component of a smoking article, and associated method
CN102100401BFeb 3, 2006Jun 19, 2013菲利普莫里斯生产公司Cigarettes and method for forming same
EP2537426A2Sep 18, 2006Dec 26, 2012R. J. Reynolds Tobacco CompanyEquipment for insertion of objects into smoking articles
EP2554060A1Aug 1, 2011Feb 6, 2013JT International S.A.Filter element incorporating a breakable capsule, method of manufacturing a cigarette having a filter element incorporating a breakable capsule and apparatus for manufacturing the cigarette having a filter element incorporating a breakable capsule
EP2578094A3 *Feb 3, 2006Aug 28, 2013Philip Morris Products S.A.Flavour capsule for enhanced flavour delivery in cigarettes
EP3097797A1 *Jun 27, 2012Nov 30, 2016British American Tobacco (Investments) LimitedInsertable filter unit for a smoking article filter
WO2006082529A3 *Feb 3, 2006May 10, 2007Philip Morris ProdFlavour capsule for enhanced flavour delivery in cigarettes
WO2007038053A1Sep 18, 2006Apr 5, 2007R.J. Reynolds Tobacco CompanyEquipment for insertion of objects into smoking articles
WO2010107756A1Mar 16, 2010Sep 23, 2010R. J. Reynolds Tobacco CompanyApparatus for inserting objects into a filter component of a smoking article, and associated method
WO2011094171A1Jan 25, 2011Aug 4, 2011R. J. Reynolds Tobacco CompanyApparatus and associated method for forming a filter component of a smoking article
WO2013000967A1 *Jun 27, 2012Jan 3, 2013British American Tobacco (Investments) LimitedSmoking article filter and insertable filter unit therefor
WO2013017624A1Aug 1, 2012Feb 7, 2013Jt International S.A.Filter element incorporating a breakable capsule, method of manufacturing a cigarette having a filter element incorporating a breakable capsule and apparatus for manufacturing the cigarette having a filter element incorporating a breakable capsule
Classifications
U.S. Classification131/339, 131/173, 131/344, D27/101, 131/212.1, 131/209
International ClassificationA24D3/00, A24D3/06
Cooperative ClassificationA24D3/061
European ClassificationA24D3/06B