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Publication numberUS3625228 A
Publication typeGrant
Publication dateDec 7, 1971
Filing dateOct 16, 1969
Priority dateOct 16, 1969
Publication numberUS 3625228 A, US 3625228A, US-A-3625228, US3625228 A, US3625228A
InventorsDock Mortimer Russell
Original AssigneeH 2 O Filter Corp The
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Heat activated filter for smoking devices
US 3625228 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

United States Patent Mortimer Russell Dock New York, N.Y.

Oct. 16, 1969 Dec. 7, 1971 The 11-2-0 Filter Corporation New York, N.Y.

Inventor Appl. No. Filed Patented Assignee HEAT ACTIVATED FILTER FOR SMOKING DEVICES 2 Claims, 3 Drawing Figs.

U.S. Cl 131/262, 131/ 10.1 Int. Cl. ..A24d 01/06, A241 13/06 FieldolSeareh l31/l0.1,

[56] References Cited UNITED STATES PATENTS 3,103,221 9/1963 Harris 131/10.s 3,366,121 H1968 Carty.... 131/1o.1 3,388,707 6/1968 Harris 13 11107 X 3,428,049 2/1969 Leake et a1. 13 1/10.| FOREIGN PATENTS 188,572 3/1964 Sweden 131/10.1

Primary Examiner-Melvin D. Rein ABSTRACT: This invention relates to a filter for smoking devices wherein the heat caused by combustion of the tobacco products causes the release of encapsulated fluid and the consequent moistening of the filtering material disposed within the device. The fluid is retained in capsules the walls of which are constituted of waxlike material which is melted when the heat of the smoke is concentrated in jet form thereon by a truncated conical baffle the smaller end of which is in proximity to the capsules and the larger end is close to the tobacco charge.

PATENTEUDEB nan R K mC mm v 1 .R R E M T R 0 M jWmz ATTORNEY HEAT ACTIVATED FILTER FOR SMOKING DEVICES The present invention has for its purpose the release of encapsulated fluid in a filter device for smoking products, wherein such release is effected by the heat of the smoke reacting upon the fluid container member, without any action by the smoker other than inhalation as the tobacco in the smoking device is ignited and the smoke drawn therethrough.

The reason for the present concept is the reluctance of some smokers to effect the release of encapsulated fluid by squeezing or pressure or other manual exercise, whereas the advantage of greater smoking pleasure results from the smoke being moistened and cooled as it travels through a wet filter.

For a better understanding of the invention, reference is made to the accompanying drawings, in which like numerals refer to like parts in all figures and in which FIG. I is a perspective view of a filter for a smoking device;

FIG. 2 is a cross section taken on line 2-2 of FIG. I; and

FIG. 3 shows the view of FIG. 2 after the tobacco has been ignited and the smoke has been drawn through the tobacco and into the filter.

With more particular reference to the drawings, it will be seen that in FIG. 11, filter comprises housing 11, and battle member 16 and cigarette 17 are shown in dotted lines.

FIG. 2 shows plug member 12 and capsules 13 having a fluid content 14, and absorbent, expansible material 15 disposed within the space between plug member I2 and buffer member 16.

In FIG. 3, the absorbent, expansible material 15 is shown expanded by the fluid released from the capsules 13 upon the destruction or partial destruction thereof by the smoke drawn through the filter from the burning tobacco.

The buffer member 116 is of a truncated conical configuration, having the major opening at the outer end of the housing and the minor diameter toward the interior of the housing. Thus, the smoke is readily drawn into the filter and as it travels through the buffer member it becomes concentrated by the narrowing of the channel until, as it reaches the end having the minor diameter, it has the effect of a jet of warm smoke directed upon the walls of the capsules. Said capsules, being made of a waxlike material or other substance readily collapsible upon the application of heat, are thereupon melted or otherwise partially destroyed, and release their fluid content, which is preferably, but not necessarily, an aqueous solution. Examples of other solutions in filter containing capsules may be found in US. Pat. Nos. 3,339,557 and 3,540,456. The small bore at the interior end of the buffer member, together with the continuing inhalation by the smoker, prevents the leakage of fluid back through the buffer member into the tobacco, and said fluid therefore enters the absorbent material, causing said material to expand and fill the interior of the housing, including that space previously occupied by the now partially collapsed capsules.

Such moistened, expanded material then entraps at least a portion of the combustion products released by the burning tobacco, and reduces the temperature of the smoke as it travels therethrough toward the mouth of the smoker. The plug at the mouth end of the device prevents the absorbent material from escaping and allows no part thereof to reach the smokers mouth.

I claim:

ll. In a cigarette filter or the like, a substantially cylindrical housing having a blocking plug of permeable material disposed at the mouth end thereof, a charge of absorbent material immediately upstream therefrom said material being characterized by being expansible when wetted, at least one fluid filled capsule having heat destructible walls disposed within said absorbent material mass and a baffle member of a diameter at one end equal to that of the housing at 'the upstream end thereof and being placed in proximity to the charge of smokable tobacco, the downstream end of the baffle being narrowed so as to form a jet" ofthe warm smoke which is directed at the capsules to effect melting of the walls thereof during smoking.

2. The filter of claim 1 wherein the baffle is in the shape of a truncated cone. I

As regards the temperature of the etstream, the applicant pointed out in the interview, that an effective temperature for melting the capsules walls will be arrived at, if not immediately on lighting the cigarette, then subsequently thereto and when the burning coal approximates the filter charge.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3103221 *Apr 6, 1960Sep 10, 1963Walter HarrisCigarette filter
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
SE188572A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3888160 *Aug 31, 1973Jun 10, 1975Imp Tobacco Group LtdTobacco smoke filter
US4966171 *Jan 27, 1989Oct 30, 1990Philip Morris IncorporatedSmoking article
US4991606 *Jul 22, 1988Feb 12, 1991Philip Morris IncorporatedSmoking article
US5060676 *Oct 26, 1987Oct 29, 1991Philip Morris IncorporatedProcess for making a carbon heat source and smoking article including the heat source and a flavor generator
US5345951 *Aug 12, 1992Sep 13, 1994Philip Morris IncorporatedSmoking article
US5443560 *Dec 14, 1992Aug 22, 1995Philip Morris IncorporatedChemical heat source comprising metal nitride, metal oxide and carbon
US6481437 *Aug 27, 1998Nov 19, 2002Hortapharm B.V.Enhanced isolation chambers for ascending-stream extractive vaporizer
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
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
US7836895 *Jun 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
US8905243Aug 11, 2010Dec 9, 2014R.J. Reynolds Tobacco CompanyApparatus for sorting objects, and associated method
DE3042937A1 *Nov 14, 1980May 27, 1981Imp Group LtdRauchgegenstand
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
WO2007038053A1Sep 18, 2006Apr 5, 2007Reynolds Tobacco Co REquipment 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
WO2012021638A2Aug 10, 2011Feb 16, 2012R. J. Reynolds Tobacco CompanyApparatus for sorting objects, and associated method
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. Classification131/337, 131/339
International ClassificationA24D3/00, A24D3/06
Cooperative ClassificationA24D3/061
European ClassificationA24D3/06B