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Publication numberUS3368566 A
Publication typeGrant
Publication dateFeb 13, 1968
Filing dateJun 17, 1964
Priority dateJun 17, 1964
Publication numberUS 3368566 A, US 3368566A, US-A-3368566, US3368566 A, US3368566A
InventorsAvedikian Souren Z
Original AssigneeSouren Z. Avediklan
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Filter cigarette
US 3368566 A
Images(1)
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Description  (OCR text may contain errors)

Feb. 13, 19.68

S- Z. AVEDIKIAN FILTER CIGARETTE Filed June 17, 1964 FIG. 2.

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A TTORNE vs.-

United States Patent O M 3,368,566 FILTER CIGARETTE Souren Z. Avedkian, 34 Athens Road, Short Hills, NJ. 07078 Filed June 17, 1964, Ser. No. 375,779 1 Claim. (Cl. 131-10.7)

ABSTRACT F THE DISCLOSURE The invention relates to a cigarette having a burnable charge of relativelyv inexpensive material, a composite filter having mechanical filtering means for removing particulate material and chemical reacting materials for removing some noxious gases from the gas stream and a terminal charge of relatively high quality tobacco at the mouth end of the cigarette for providing a tobacco flavor to the exiting gas stream.

This invention relates to cigarettes and more especially to filter cigarettes.

Although filter cigarettes have come into Widespread use by those who want to` enjoy the pleasure of smoking without incurring the health hazard, it is doubtful whether any of the currently available filter cigarettes actually eliminate the health hazard. It has been established that the extensive smoking of cigarettes is apparently a cause of certain ailments, but there is doubt as to what product or products of combustion of the cigarette are primarily injurious. 'Presently used :filters remove so little of the products of combustion that they may be completely useless.

It is an object of this invention to remove practically all of the particulate matter and a very substantial amount of the other products of combustion of the cigarette. Thus much of the toxic, irritating and noxious components produced by the combustion of the cigarette are removed by the filter before they enter the mouth of the smoker. These components include nicotine, acrolein, phenolic compounds, tars, organic acids, such as acetic acid, alcohols, ketones, esters and other hydrocarbons. It is believed that the removal of these components results in a safer cigarette. The pressure drop through the cigarette need not be significantly higher than that obtained with con ventional filter cigarettes.

Another object is to provide a cigarette of the character indicated, with tobacco behind the filter for reconstituting the flavor, but this requires only a small amount of tobacco which does not burn and which is used to provide the aroma and taste that adds to the enjoyment of smoking for those who like to smoke.

Among the economic advantages of this invention are that the tobacco which is to be burned may be a grade which is low in cost since the taste" of the burning tobacco is filtered out. Only a small amount of reconstituting tobacco behind the filter need be tobacco of high quality to provide a desirable taste and aroma carried by the n1trogen stream which the smoker draws into his mouth.

The invention can be made with several short filters in series or with a single longer filter constituting the difterent ingredients required for accomplishing the new results of this invention.

Other objects, features and advantages of the invention will appear or be pointed out as the description proceeds.

In the drawing, forming a part hereof, in which like reference characters indicate corresponding parts in all the views:

FIGURE 1 is a diagramm-atic sectional view of a cigarette made in accordance with this invention and having a series of short filters; and

FIGURE 2 is a view similar to FIGURE l but showing 3,368,566 Patented Feb. 13, 1968 a modified form of the invention in which a single filter replaces the plurality of filters shown in FIGURE 1.

'I'he cigarette shown in FIGURE 1 includes a cover 10, which is conventionally made of paper and a quantity of tobacco 12 packed in the front end of the cover in accordance with conventional practice. The tobacco 12 may be a blend, and may be made up partly or wholly of some of the tobacco substitutes which have been suggested and which for purposes of this invention are to be considered equivalent of tobacco.

Beyond t-he tobacco mass 12 there are a plurality of short filters 14, 16, 18, 20, 22, 24 and 26. The cigarette will be described as having these filters, each of which performs a separate function, since this will describe the principle of the invention more clearly; but in actual practice some or -all of these plural filters are ordinarily com bined so that the number of filters is actually reduced. The first filter 14 is for the purpose of removing the solids that are present in the tobacco smoke, such as colloidal nicotine which is present as an aerosol suspension; carbon; and higher hydrocarbons (tars). This first filter 14 is a fine mesh web capable of mechanically removing small solid particles from the smoke.

The filter 14 maybe made of a carded web, oriented, -200 grains per square yard, viscose fiber, 1.5 denier, 3A to 2 long. Or it may be a carded web, oriented, 150- 450 grains per square yard, viscose fiber, 1.5 denier to 3.0 denier, 1/2 to 2" long. Such a filter made with fibers of nylon, polyesters such yas Daeron, polyethylene, polypropylene, vinyon, acrylic such as Acrilan, Orlon or Creslan, or blends of any of these, is highly satisfactory. These fibers may also be used to make the web referred to below as a Rando-Webber web.

Web made on a Rando-Webber where the web is randomly formed with the fibers blown in an airstream and deposited in a random fashion on a rotating screen, is doffed off the screen onto a conveyor. The Rando-Webber web may have a composition as follows:

Vinyon, 1/s" fiber length, 1.5 denier l040% Viscose, 1A" `fiber length, 1.5 and 3.0 denier 60-40% Glass .5 to .75 micron diameter s to fiber length,

Btl-20%.

The second -filter 16 removes condensible substances. This filter 16 contains activated carbon to which may be added, if desired, a quantity of silica gel. This filter condenses condensible gases which are then absorbed by the activated carbon. Silica gel condenses water vapor and the water absorbs water soluble gases.

The third filter 18 is impregnated with alkali-reacting materials (such as sodium carbonate, soda lime, sodium phosphate and borax). Soda lime is a mixture of sodium hydroxide and calcium oxide reacted together to form pellets that are rather hard and have definite and well formed physical structures. The alkaline reacting substances remove acetic acid, formic acid and -acidic phenolic compounds.

The fourth filter 20 contains catalytic oxides for converting any carbon monoxide to carbon dioxide. The catalytic materials comprise manganese dioxide, chromium trioxide, -and other oxides of chromium and copper oxide.

The fifth filter 22 contains acidic acting substances for combining with alkaline noxious substances such as vaporized nicotine and other organic amines. The filter 22 may contain as the acidic reacting substances sodium bisulfate, and/or sodium acid phosphate, citric acid, and sodium acid tartrate.

The sixth filter 24 can be used with alkaline reacting substances like the filter 18 for the purpose of removing carbon dioxide which has been formed by converting the carbon monoxide in the fourth filter 20. Since carbon 3 dioxide is known to be a harmless product in small quantities, this filter 24 and its function can be omitted, if desired.

The seventh filter 26 is a clear fine mesh filter like the firstv filter 14, and beyond this last filter 26 there is a short length of reconstituted tobacco 28 for reconstituting the taste, aroma and fragrance of the cigarette. This fine grade tobacco, in the gas stream, may be recessed from the back end of the cigarette, if desired. This recess is indicated by the reference character 30 in FIGURE 1.

FIGURE 2 shows a construction in which a filter 34 replaces the plural filters of FIGURE 1. The various active ingredients are applied to the filter web, either as a mixture or with some of them put on the web locally to maintain some sequential resemblance as with the plural filters of FIGURE 1.

The amount of each product of combustion that is generated by the burning of the tobacco can be computed and -the amount of active substances in the filter to prevent these products from passing through the filter zone can be determined from the known products to be absorbed. Some factor'of safety should, of course, be allowed.

' The preferred embodiment of the invention has been illustrated and described, but changes and modifications can be made, and some features can be used in different combinations without departing from the invention as defined in the claim.

i What is claimed is:

1. A filter cigarette structure designed to produce a flavored warm gas stream with an almost negligible amount of particulate matter at the mouth end thereof during smoking comprising a combustible charge of relatively low quality smokable material, a composite filter element constituting a fine mesh particulate matter remover selected from the groups consisting of viscose and acting agents comprising an activated carbon charge, an

impregnation of an alkali material selected from the group consisting of sodium carbonate, soda lime, sodium phosphate and borax for the removal of much of the acetic acid, formic acid and acidic phenolic compounds, a catalytic oxide selected from the group consisting of manganese dioxide, chromium `trioxide, and copper oxide for converting carbon monoxide to carbon dioxide, an acidic acting charge selected from the group consisting of sodium bisulfate, sodium acid phosphate, citric acid and sodium acid tartrate, a iinal fine mesh filter at the downstream end of the said serially arranged group and a terminal charge of higher quality tobacco designed to reintroduce avor in the filtered gas stream, the final flavor being to a large extent independent of the exact composition of the combustible charge.

References Cited UNITED STATES PATENTS 2,181,614 11/1939 Streifling 131-10 2,881,770 4/1959 Touey 131-208 l FOREIGN PATENTS 406,401 3/ 1934 Great Britain. 1,101,759 4/1955 France.

753,203 7/1956 Great Britain. 757,841 9/ 1956 Great Britain. 760,772 11/1956 Great Britain. 316,144 11/1956 Switzerland. 1,152,836 9/1957 France. 1,244,397 9/1960 France.

r SAMUEL KOREN, Primary Examiner.

MELVIN D. REIN, Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2181614 *Jan 20, 1939Nov 28, 1939Striefling Robert SCigarette or the like
US2881770 *May 27, 1954Apr 14, 1959Eastman Kodak CoFibrous tobacco smoke filters
CH316144A * Title not available
FR1101759A * Title not available
FR1152836A * Title not available
FR1244397A * Title not available
GB406401A * Title not available
GB753203A * Title not available
GB757841A * Title not available
GB760772A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3397705 *Aug 2, 1965Aug 20, 1968Eastman Kodak CoFilter elements and additive containing material therefor
US3417758 *Jan 15, 1965Dec 24, 1968Eastman Kodak CoFilter elements and additives therefor
US3426763 *Jul 21, 1965Feb 11, 1969Eastman Kodak CoTobacco smoke filter having a coated carbon additive
US3428055 *Apr 9, 1965Feb 18, 1969Eastman Kodak CoFilter elements and additive therefor
US3447539 *Nov 21, 1966Jun 3, 1969Sutton Res CorpOxidized cellulose smokable product including ashing ingredient
US3515151 *May 14, 1968Jun 2, 1970Brent GeorgeCigarette with filter
US3658069 *Feb 17, 1970Apr 25, 1972Stanford Research InstFilter for reducing the level of carbon monoxide in tobacco smoke
US3693632 *Apr 7, 1971Sep 26, 1972Brown & Williamson TobaccoTobacco-smoke filters
US3738374 *Mar 5, 1970Jun 12, 1973B LabCigar or cigarette having substitute filler
US3759220 *Nov 2, 1971Sep 18, 1973Canon KkCleaning device in electrophotography
US3858587 *Feb 5, 1974Jan 7, 1975Cavelli Anthony RMagna-tip
US3913590 *Mar 11, 1974Oct 21, 1975Sway BorisCigarette having distinct tobacco fillers with inert, porous, noncombustible element interposed therebetween
US4146040 *Mar 17, 1977Mar 27, 1979Cohn Charles CCigarettes
US4223597 *Oct 31, 1977Sep 23, 1980Baumgartner Papiers S.A.Method of the production of cigarette filters
US4291711 *Mar 27, 1979Sep 29, 1981American Filtrona CorporationTobacco smoke filter providing tobacco flavor enrichment, and method for producing same
US4317460 *Jan 17, 1979Mar 2, 1982Gallaher LimitedSmoking products
US4319590 *Nov 20, 1980Mar 16, 1982Patarra Sam FCigarette with removable smoke-modifying cartridges
US4343320 *Feb 25, 1981Aug 10, 1982Rudolph MutoCigarette filter with oblique partitions
US4355995 *Apr 3, 1981Oct 26, 1982American Filtrona CorporationTobacco smoke filter providing tobacco flavor enrichment, and method for producing same
US4403446 *Jul 13, 1981Sep 13, 1983The Stearns & Foster CompanyPolypropylene-polyester tubular fibrous element
US4730628 *Jul 21, 1986Mar 15, 1988R. J. Reynolds Tobacco CompanyCigarette rods having segmented sections
US4763674 *Apr 16, 1986Aug 16, 1988Hercules IncorporatedMethod and device for controlling hydrogen cyanide and nitric oxide concentrations in cigarette smoke
US4776354 *Jan 2, 1987Oct 11, 1988R. J. Reynolds Tobacco CompanyFiltered smoking article
US4791943 *Aug 22, 1986Dec 20, 1988Baumgartner Papiers S.A.Cigarette filter unit and method for the production thereof
US4889143 *May 14, 1986Dec 26, 1989R. J. Reynolds Tobacco CompanyCigarette rods and filters containing strands provided from sheet-like materials
US4924883 *Mar 6, 1987May 15, 1990R. J. Reynolds Tobacco CompanySmoking article
US4924887 *Feb 3, 1986May 15, 1990R. J. Reynolds Tobacco CompanyTobacco rods and filters
US4924888 *May 15, 1987May 15, 1990R. J. Reynolds Tobacco CompanySmoking article
US4966171 *Jan 27, 1989Oct 30, 1990Philip Morris IncorporatedSmoking article
US4991606 *Jul 22, 1988Feb 12, 1991Philip Morris IncorporatedSmoking article
US5025814 *May 12, 1987Jun 25, 1991R. J. Reynolds Tobacco CompanyCigarette filters containing strands of tobacco-containing materials
US5040551 *Nov 1, 1988Aug 20, 1991Catalytica, Inc.Optimizing the oxidation of carbon monoxide
US5050621 *Jul 17, 1989Sep 24, 1991British-American Tobacco Company LimitedSmoking articles
US5076294 *Mar 29, 1990Dec 31, 1991R. J. Reynolds Tobacco CompanyLongitudinally segmented; organic acid; reduces yields of mainstream formaldehyde
US5076295 *Sep 29, 1989Dec 31, 1991R. J. Reynolds Tobacco CompanyCigarette filter
US5105834 *Nov 6, 1990Apr 21, 1992R.J. Reynolds Tobacco CompanyCigarette and cigarette filter element therefor
US5115823 *Dec 20, 1990May 26, 1992Philip Morris IncorporatedFlavor-enhancing smoking filter
US5141006 *Feb 28, 1990Aug 25, 1992Eastman Kodak CompanyTobacco smoke filter material and process for production thereof
US5161549 *Oct 12, 1990Nov 10, 1992Regional Research & Development CorporationRetaining tar, nicotine and noxious gases in tobacco smoke filter by mixing in aqueous medium two organic acids, two organic acid salts, organic acid and salt, two polyhydric alcohols, or salt of organic acid and polyhydric alcohol
US5211684 *Jan 10, 1989May 18, 1993R. J. Reynolds Tobacco CompanyCigarettes
US5246017 *Jun 5, 1992Sep 21, 1993R. J. Reynolds Tobacco CompanyCigarette and cigarette filter element therefor
US5345951 *Aug 12, 1992Sep 13, 1994Philip Morris IncorporatedSmoking article
US5396909 *Dec 16, 1993Mar 14, 1995R. J. Reynolds Tobacco CompanySmoking article filter
US5443560 *Dec 14, 1992Aug 22, 1995Philip Morris IncorporatedChemical heat source comprising metal nitride, metal oxide and carbon
US5465739 *Sep 15, 1992Nov 14, 1995R. J. Reynolds Tobacco CompanyCigarette and cigarette filter element therefor
US5495859 *Apr 13, 1994Mar 5, 19961149235 Ontario Inc.Cigarette smoke filter system
US5495860 *Jul 20, 1993Mar 5, 1996Rhone-Poulenc Rhodia AgStructures formed from cellulose acetate, use thereof for the manufacture of filter tow, use of the filter tow for the manufacture of a tobacco smoke filter element, as well as a filter tow and a tobacco filter element
US5497791 *Apr 13, 1994Mar 12, 1996114935 Ontario Inc.Smoker's accessory
US5638833 *Feb 26, 1996Jun 17, 19971149235 Ontario Inc.Cigarette smoke filter system
US5752527 *Feb 26, 1996May 19, 1998Ontario Inc.Smoker's accessory
US6311696 *May 11, 1995Nov 6, 2001British-American Tobacco Company LimitedSmoking articles
US7231923 *Jul 13, 2004Jun 19, 2007R.J. Reynolds Tobacco CompanySmoking article including a catalytic smoke reformer
US7484511Mar 16, 2004Feb 3, 2009Philip Morris Usa Inc.Cigarette and filter with downstream flavor addition
US7784470Jan 9, 2003Aug 31, 2010Philip Morris Usa Inc.Cigarette filter with beaded carbon
US7784471Apr 11, 2006Aug 31, 2010Philip Morris Usa Inc.Cigarette filter with beaded carbon
US7842736Apr 10, 2007Nov 30, 2010British American Tobacco (Investments) LimitedPorous carbons
US7850942May 7, 2007Dec 14, 2010British American Tobacco (Investments) Ltd.Porous carbons
US7997282Oct 31, 2007Aug 16, 2011Philip Morris Usa Inc.Cigarette filter with beaded carbon
US8227518Apr 29, 2011Jul 24, 2012British American Tobacco (Investments) Ltd.Porous carbons
US8499767 *Jun 12, 2008Aug 6, 2013Philip Morris Usa Inc.Smoking article
US8591855Oct 27, 2010Nov 26, 2013British American Tobacco (Investments) LimitedPorous carbons
DE3938010A1 *Nov 15, 1989Jun 13, 1990Brown & Williamson TobaccoRauchartikel
EP0712584A2 *Jul 7, 1989May 22, 1996British-American Tobacco Company LimitedImprovements relating to smoking articles
EP1442667A1 *Oct 23, 2002Aug 4, 2004Japan Tobacco Inc.Filter for cigarette and cigarette with filter
Classifications
U.S. Classification131/334, 131/331, 131/344, 55/528, 131/341
International ClassificationA24D3/16, A24D3/04, A24D3/00
Cooperative ClassificationA24D3/16, A24D3/04
European ClassificationA24D3/16, A24D3/04