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`EXHIBIT 2
`EXHIBIT 2
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`

`

`PX-002
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`
`a2) United States Patent
`US 9,814,265 B2
`do) Patent No.:
`Nov.14, 2017
`(45) Date of Patent:
`Rinkeretal.
`
`(54) PERMEABLE ELECTRIC THERMAL
`RESISTOR FOIL FOR VAPORIZING FLUIDS
`FROM SINGLE-USE MOUTHPIECES WITH
`VAPORIZER MEMBRANES
`
`(58) Field of Classification Search
`CPC ww. A24F 47/00; A24F 47/008; HO5B 3/26;
`HOSB 2203/013
`
`(Continued)
`
`(71) Applicant: PHILIP MORRIS PRODUCTSS.A.,
`Neuchatel (CH)
`
`(56)
`
`References Cited
`U.S. PATENT DOCUMENTS
`
`(72)
`
`Inventors: Arno Rinker, Hamburg (DE); Philipp
`Litzenberger, Hamburg (DE)
`
`5,388,594 A
`5,649,554 A
`
`2/1995 Counts etal.
`7/1997 Sprinkel et al.
`(Continued)
`
`FOREIGN PATENT DOCUMENTS
`
`CA
`CN
`
`2 502 171 C
`2244307 Y
`
`1/2013
`1/1997
`
`(Continued)
`
`OTHER PUBLICATIONS
`
`Examination Report issued Jun, 27, 2016 in the Gulf Cooperation
`Council Patent Application No. GC 2012-22390.
`(Continued)
`
`Primary Examiner — Alison L Hindenlang
`Assistant Examiner — Mohamed K Ahmed Ali
`
`(74) Attorney, Agent, or Firm — Oblon, McClelland,
`Maier & Neustadt, L.L.P.
`
`(73) Assignee: PHILIP MORRIS PRODUCTS §&.A.,
`Neuchatel (CH)
`
`(*) Notice:
`
`Subject to any disclaimer, the term ofthis
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 854 days.
`
`(21) Appl. No.:
`
`14/344,026
`
`(22) PCT Filed:
`
`Sep. 27, 2012
`
`(86) PCT No.:
`
`PCT/EP2012/069135
`
`§ 371 ©),
`(2) Date:
`
`Mar. 10, 2014
`
`(87) PCT Pub. No.: WO2013/045582
`
`PCT Pub. Date: Apr. 4, 2013
`
`ABSTRACT
`(57)
`A vaporizer device for vaporizing substances is provided,
`containing active and/or aroma materials,
`including a
`US 2014/0305454 Al—Oct. 16, 2014
`mouthpiece with a fluid inlet and a fluid outlet, and includ-
`ing: a heating device with a thermalresistor being a metallic
`foil or a thin sheet configured as a dual coil and/or sinuous
`line with two ends and dimensionsof the cross-section of a
`
`(65)
`
`(30)
`
`Prior Publication Data
`
`Foreign Application Priority Data
`
`Sep. 28, 2011
`
`(BP) cecsssssesesscsssssssssseseseneseee 11183197
`
`(51)
`
`Int. CL.
`A24F 47/00
`HOSB 3/26
`
`(2006.01)
`(2006.01)
`
`(52) U.S. Cl.
`CPC veces A24F 47/008 (2013.01); HOSB 3/26
`(2013.01); HO5B 2203/013 (2013.01)
`
`cigarette or a small cigar, wherein the interspaces of the dual
`coil and/or sinuous line allow fluid flow therethrough, con-
`tact tabs are connected to respective opposed ends of the
`dual coil and/or sinuous line and are not in direct contact
`with one another, and at least one permeable and wettable
`vaporizer membrane in large-area contact with the thermal
`resistor, wherein the thermal resistor and the at least one
`(Continued)
`
`
`
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`US 9,814,265 B2
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`Page 2
`
`=—-2/2010
`013046 BL
`EP
`vaporizer membrane are arranged orthogonally or at an
`
`angle to the direction of the fluids passing through the§EP 2 260 733 12/2010
`
`mouthpiece
`EP
`2 359 705 Al
`8/2011
`.
`JP
`7-184627 A
`T1995
`JP
`2012-533313 A
`12/2012
`iP
`2013-516159 A
`5/2013
`RU
`2 360 583 Cl
`7/2009
`WO
`WO 2007/042941 A2
`4/2007
`
`WoO WO 2009/134164 Al—11/2009
`wo
`(58) Field of Classification Search
`3012 006722
`12012
`USPC wee 128/202.21, 17; 131/329; 338/294
`See application file for complete search history.
`
`.
`.
`17 Claims, 2 Drawing Sheets
`
`(56)
`
`5,750,964 A
`2002/0078951 A1*
`
`References Cited
`U.S. PATENT DOCUMENTS
`
`
`5/1998 Counts etal.
`6/2002 Nichols ..........04. AG6IM 11/041
`128/200.22
`
`2011/0005535 Al
`2011/0155153 Al
`2012/0193343 Al
`
`1/2011 Xiu
`6/2011 Thorensetal.
`8/2012 Johnson
`
`FOREIGN PATENT DOCUMENTS
`
`CN
`CN
`DE
`
`1575673 A
`101262786 A
`1 565 641
`
`-2/2005
`9/2008
`2/1970
`
`OTHER PUBLICATIONS
`International Search Report Issued Mar. 28, 2013 in PCT/EP12/
`069135 Filed Sep. 27, 2012.
`Office Action issued Sep. 21, 2015 in Kazak Patent Application No.
`2014/1579.1 (with English languagetranslation).
`Korean Office Action issued Apr. 14, 2016 in Patent Application No.
`10-2014-7003526 (with English translation).
`Combined. Office Action and Search Report issued Sep. 15, 2015 in
`Chinese Patent Application No. 201280045111.3 (with English
`languagetranslation).
`German language International Preliminary Report on Patentability
`(IPRP) with English translation issued in International application
`No. PCT/EP2012/069135 (18 pages).
`
`* cited by examiner
`
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`U.S. Patent
`
`Nov.14, 2017
`
`Sheet 1 of 2
`
`US 9,814,265 B2
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`Fig. 1
`
`
`
` Detail A
`
` Ty
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`U.S. Patent
`
`Nov.14, 2017
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`Sheet 2 of 2
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`US 9,814,265 B2
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`Fig. 2
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`US 9,814,265 B2
`
`1
`PERMEABLE ELECTRIC THERMAL
`RESISTOR FOIL FOR VAPORIZING FLUIDS
`FROM SINGLE-USE MOUTHPIECES WITH
`VAPORIZER MEMBRANES
`
`CROSS REFERENCE TO RELATED
`APPLICATION
`
`This application is a national phase application based on
`PCT/EP2012/069135, filed on Sep. 27, 2012.
`
`TECHNICAL FIELD
`
`The present invention relates in general to a device for
`optimized smoke-free inhalation of nicotine and/oradditives
`with electronic cigarettes.
`
`
`
`GENERAL INTRODUCTION
`
`tobacco is
`When a conventional cigarette is smoked,
`burned and the smokearising during this combustion is
`inhaled (mainstream smoke) or discharged into the sur-
`rounding environment (sidestream smoke).
`Mainstream smokeis the crucial factor in damaging the
`health of the consumer, but is what gives him/her the desired
`pleasure. Sidestream smokeis the crucial factor in damaging
`the health of passive smokers and is desired neither by the
`passive smokers nor by the consumer.
`Over 4800 different substances have been identified in
`
`cigarette smoke, of which around 70 are demonstrably
`carcinogenic.
`The aim of methods and devices based thereon for smoke-
`free inhalation of nicotine and/or additives is to offer the
`consumer a substitute for the conventional cigarette which
`causes significantly less harm to the consumer and third
`parties, preferably no harm at all to the consumer and third
`parties, while howeverretaining the consumerexperience of
`a conventional cigarette.
`
`PRIOR ART
`
`At present, so-called e-cigarettes (electronic cigarettes)
`establish themselves on the market as a substitute for
`
`the
`conventional cigarettes. Among different approaches,
`approach described hereinbelow has become accepted in
`view of its comparatively easy technical realizability in
`combination with its convincing functionality (vaporization
`rate, nicotine output).
`Patent DE69017371T2, which dates back to 1990,
`describes a smoking article comprising a flavor-generating
`medium,an electric heating element and meansfor applying
`electrical energy, the flavor-generating medium beingreleas-
`able from the electric heating element, characterized in that
`the electric heating element is in thermal contact with the
`flavor-generating medium,that the means for applying elec-
`trical energy applieselectrical energy to the heating element
`thereby causing the heating element to heat said flavor-
`generating medium and to release flavor components, and
`that a contro] meansis provided for controlling the amount
`of electrical energy applied by the means for applying
`electrical energy.
`This basic principle has been developed to marketability
`and optimized in the last two decades, as described herein-
`below.
`
`A fluid to be vaporized is supplied from a reservoir to a
`small heating coil due to the capillary effect of a metal braid
`or a glass fiber wick. The heating coil is normally activated
`
`20
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`25
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`30
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`35
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`40
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`45
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`50
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`55
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`60
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`65
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`2
`by a vacuum switch or a vacuum governor when a puff is
`taken from the electronic cigarette, whereby the fluid (liq-
`uid) evaporates.
`The main components of the electronic cigarette are the
`following ones:
`the battery unit with vacuum switch or
`vacuum governor and LED for optically simulating the
`glowing endofa lit cigarette, the vaporizer unit (atomizer)
`with heating coil and capillaries as well as the mouthpiece
`with the fluid reservoir.
`
`The three components are normally cylindrical and, when
`assembled, their shape imitates a cigarette. In the interior of
`these components a flow channel is formed, which extends
`throughall three components. Whena puff is taken from the
`electronic cigarette, an air current is sucked into the battery
`unit, whereby the vacuum switch or vacuum governor is
`operated. This hasthe effect that the heating coil provided in
`the downstream vaporizer unit is activated.
`The helical heating coil is wound around a fiber strand,
`which, through capillaries, is connected directly or via a
`metal braid to a fluid reservoir located downstream in the
`
`mouthpiece and which is impregnated with fluid, said fiber
`strand being arranged orthogonally to the flow direction.
`Due to the activation of the heating coil, fluid is vaporized
`and transferred to the air current.
`Thereservoir itself, which is filled with the fluid to be
`vaporized,
`is not directly exposed to the flow in the flow
`channel, but is arranged in a lateral pocket of the mouth-
`piece. The fiber strand is thus supplied through the capil-
`laries of the metal braid and the glass fiber strand, without
`non-vaporized fluid from the reservoir arriving inevitably in
`the consumer’s mouth. The reservoir normally consists of a
`small piece of non-woven fabric.
`In addition to the reservoir, the mouthpiece only com-
`prises a flow channeland theair outlet in the form of a small
`hole in the end face thereof. Theair current, which has added
`thereto the vaporized fluid, flows into the consumer’s oral
`cavity through said air outlet.
`The battery unit and the vaporizer unit are releasably
`connected to one another via a thread. The end face of the
`thread and the threaded surface are electrically conductive
`and insulated from one another, so that, when the battery
`unit and the vaporizer unit have been connected via the
`thread, an electric current can flow between them and the
`heating coil can be supplied by the battery when the vacuum
`switch or vacuum governor has been activated.
`In the
`demounted condition, the battery unit can be connected to a
`battery charger via the same thread.
`The mouthpiece is attached via a cylindrical flange to the
`vaporizer unit end located opposite the thread. The reservoir
`in the mouthpiece comes thus into contact with the metal
`braid of the vaporizer unit and the transport of fluid from the
`reservoir into the interior of the heating coil is initiated.
`A big disadvantage of this embodiment of electronic
`cigarettes having a separate, reusable vaporizer unit is that
`the vaporizer unit will get increasingly contaminated during
`its service life. Since many reservoirs comprising each 200
`puffs are normally consumed before the vaporizer unit is
`exchanged and since the capillaries are not cleaned,there is
`the potential risk of vaporizing microorganisms and unde-
`sired harmful substances. A vaporizer unit can be used up to
`6 months.
`Another drawback of the increasing contamination of the
`vaporizer unit is the potential
`loss of quality during the
`consumption period. For example, when a mouthpiece is
`being exchanged,the fluid to be vaporized contained in the
`new mouthpiece will mix with the fluid residues that are still
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`3
`contained in the capillaries. This is particularly disadvanta-
`geous, if the consumer wants to consume different aromas
`with one vaporizer.
`Another disadvantageous aspect is that fluid leaks out
`when the mouthpieces attached to the vaporizer are being
`exchanged, whereby the consumer’s skin often comes into
`contact with a fluid containing nicotine. Depending on the
`respective nicotine content, the skin contact may lead to
`minor poisoning.
`Last but not least, this tripartite design has the drawback
`that the resultant length can hardly be reduced still further,
`and this is adverse to the aim of not exceeding the overall
`length of a king size cigarette to a substantial extent.
`The above-mentioned drawbacks are partially remedied
`when the vaporizer unit is integrated in the mouthpiece,
`since the escape of fluid and the resultant skin contact risk
`can be avoided and the aim oflimiting the overall length
`approximately to that of a king size cigarette can be achieved
`more easily.
`However, the threaded connection, which, together with
`the vaporizer, has been transferred to the mouthpiece, now
`provesto be disadvantageous, and, in additionto the fact that
`a threaded connection is inconvenient to handle, this also
`leads to waste disposal problems in view of the compara-
`tively thick metal wall in the area of the thread and the now
`given single-use character of the combined product, espe-
`cially since it is a mass production product, whereby the use
`of an excessive amount of material increases exponentially.
`For both the above-mentioned variants, i.e. the variant
`comprising a separate vaporizer as well as the variant having
`the vaporizer integrated in the mouthpiece, the refillability
`of the respective reservoirs as well as the resultantrefilling
`practice which has already been widely adopted constitute a
`big problem in view of the potential risks that may be
`entailed by fluids containing nicotine. Refill bottles may
`contain an amountofnicotine that maybelethal to children.
`In addition, the alleged hygienic advantage of the systems
`comprising a vaporizer that is integrated in the mouthpiece
`is nullified, since these systems are also often refilled in
`practice, although they frequently use, instead of the glass
`fiber capillaries, fibers as capillaries, which carbonize when
`they are used for a prolonged period of time.
`Finally, a big disadvantage of the systems comprising a
`vaporizer integrated in the mouthpiece is to be seen in the
`impossibility of producing this product, which is a mass
`product, on fast-running machines in view of the compo-
`nents used, e.g. the screw flange which is produced by a
`metal-cutting process and whose outer ring and whose end
`face are electrically separated, and the hardly automatable
`mounting, e.g. the mounting of the heating coil which is
`welded to the screw flange through wires and of the glass
`fiber strand or natural fiber strand conducted through the
`heating coil.
`WO2011/009920 describes a method for volatilizing
`active and/or aroma materials for the purpose of releasing an
`inhalable aerosol, wherein a fluid acted upon by thermal
`energy flows through a flow channel in a preferably cylin-
`drical hollow body and wherein the fluid in this flow channel
`entirely or in part flows through at least one vaporizer
`membrane, wherein the at least one vaporizer membrane has
`been and/or is wetted with a substance containing active
`and/or aroma materials to be vaporized and wherein the fluid
`additionally containing thermal cnergy, i.c. acted upon by
`thermal energy, vaporizes this substance or these substances
`on flowing through the vaporizer membrane and suppliesit
`or them to the fluid stream.
`
`20
`
`25
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`30
`
`35
`
`40
`
`45
`
`50
`
`55
`
`60
`
`65
`
`4
`The last mentioned method and the device based thereon
`
`allow an optimum vaporization of substances containing
`active and/or aroma materials, without the above-mentioned
`drawbacks, such as hygienic problems, high manufacturing
`costs resulting from the particular design and excessively
`long consumptiontime, of the electric systems available on
`the market, i.e. said device is, in principle, ideal for use as
`a mouthpiece of a smoke-free cigarette, but said method
`makes use of a fluid stream which has already been acted
`upon by heat due to the combustion of liquefied gas and
`which is provided by means of the process described in
`WO0O2008/113420, whereas it is not possible to accomplish a
`purely electrical generation of an adequately hotfluid stream
`in the space available in a cigarette or a small cigar because
`there is not enough space for a heat exchanger.
`W0O2008/113420 describes a method for volatilizing
`active and/or aroma substances for the purpose of releasing
`an inhalable aerosol, wherein combustion gases of a flam-
`mable gas, which is preferably combusted with an excess of
`air, are passed partially or entirely, optionally mixed with
`ambient air,
`through an active and/or aroma substance
`reservoir and wherein a desired temperature is selectable by
`the proportion of combustion gases and optionally by the
`mixing ratio of said combustion gases with ambient air.
`An essential disadvantage of this method is the use of
`liquefied gas, which has the effect that, due to the supposed
`explosion risk in the immediate vicinity of the consumer’s
`face, even thoughthis risk is only hypothetical and can be
`governed by a fail-safe design, there will be security con-
`cerns on the part of potential customers on the one hand and
`a high probability that products based on this principle will
`not be allowed aboard an aircraft on the other.
`
`
`
`OBJECT OF THE INVENTION
`
`It is therefore an object ofthe present invention to provide
`a device for electronic cigarettes which guarantees a vapor-
`ization of nicotine and/or additives without reusable com-
`ponents that comeinto contact with the fluid to be vaporized,
`and to preferably accomplish at the same time a substantial
`reduction of costs and ecological damage by reducing the
`amount of material used and by optimizing machine proc-
`essability.
`
`GENERAL DESCRIPTION OF THE INVENTION
`
`Accordingto the present invention, this object is achieved
`by a heating device of the type described in claim 1 and a
`vaporizer device used for vaporizing fluids from permeable
`vaporizer membranes
`(similar
`to those described in
`WO02011/009920) and including such a heating device, said
`heating device comprising:
`a permeable thermalresistor foil configured as a dualcoil
`and/or sinuous line with two ends and dimensions of
`the cross-section of a cigarette or a small cigar, wherein
`the interspaces of the dual coil and/or sinuous line of
`the thermal resistor (1) are open (permeable) and allow
`thus a flow of fluid therethrough.
`at least two electric contacts (contact tabs) which are
`fixedly connected to the respective opposed end of the
`thermal resistor foil on one side thereof and which are
`
`exposed on the other side thereof, which allows them to
`be releasably connected to a controlled or regulated
`voltage source, the thermal resistor foil and the electric
`contacts being preferably made of onepiece.
`In the sense of the present invention, the term permeable
`means for the thermal resistor foil as well as for the
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`5
`of the windings and/orthe wall thickness ofthe foil or of the
`vaporizer membranes that they allow gas to pass there-
`thin sheet, the powerof the thermal resistor can be adapted
`through (permeable to gas) in the direction of their surface
`normal.
`in the best possible way to various substances to be vapor-
`ized, which contain different materials.
`According to the present invention, a permeable thermal
`resistor foil consists of an electrically conductive fol, which
`By choosing adequate materials as well as adequate
`is preferably subjected to punching or laser cutting so as to
`geometrical parameters of the thermal resistor foil,
`the
`obtain a dual coil or a sinuous line shape or a combination
`electric resistance of the thermalresistor foil can be adjusted
`of dual coil and sinuousline shapes. In case of a combination
`in the range of 1-108 (Ohm), whereby a spectrum of
`of dual coil and sinuousline shapes the thermal resistor may
`0.1-13.7 Watt heating powerin the cross-section of a ciga-
`include, for example, two partial areas with sinuous line
`rette mouthpiece can be covered with a possible nominal
`shapes having an interposedpartial area in the form of a dual
`voltage of an attached battery unit of 1.2 V (NiCd)-3.7 V
`coil, or with a dual coil having a centralpartial area in the
`(Li-ion).
`form of a sinuous line. Other combinations with additional,
`Another important advantage of the invention is that, by
`different partial areas are possible as well.
`providing a local constriction (narrowing), a safety fuse can
`The thermalresistor foil according to the invention con-
`sists of an electrically conductive material, preferably an
`be integrated in the contour of the thermal resistor foil.
`aluminum or high-quality steel alloy, and more preferably of
`Whenthe fluid has been consumed,this safety fuse will be
`a food-safe pure aluminum, an AlMnalloy orstainless steel,
`thermally destroyed due to the then no longer existing
`such as X5CrNi18-10.
`cooling, and the mouthpiece will be rendered useless,
`The wall thickness of a permeable thermal resistor foil
`whereby a single-use mouthpiece with a specific consump-
`according to the present invention is between 0.01 mm and
`tion time of 5-20 puffs per 20-50 ml, preferably, however,
`0.2 mm, preferably, however, it is between 0.02 mm and
`0.08 mm.
`with 8-12 puffs per 35 ml, can be obtained in a particularly
`easy manner.
`Depending on the electric conductivity of the fluid to be
`According to a further embodiment, the vaporizer device
`vaporized, the thermal resistor foil can be coated with a
`additionally comprises a flange for releasably connecting a
`heat-resistant and electrically insulating plastic layer, pref-
`controlled or regulated electric voltage source by the electric
`erably a layer of polyimide, micanite or silicone,
`thus
`poles, the contact tabs, which are connectedto the respective
`avoiding a short circuit if the electric resistance of the fluid
`to be vaporized should be too low in comparison with the
`opposed end of the dual coil and/or sinuous line of the
`resistance of the thermal resistor foil. Micanite in the sense
`thermalresistor, not being in direct contact with one another,
`of the present invention generally refers to artificial mica,
`i.e. they are only in contact with one anothervia the thermal
`i.e. a composite material comprising broken bits of mica
`resistor. These contact tabs are adapted to be connected via
`(broken bits of layered silicate) and artificial resin as a
`the flange to the electric poles of a controlled or regulated
`
`matrix system. Exemplary products: flexible micanite FLM
`electric voltage source.
`M &P(consisting of at least 92% of muscoviteor, alter-
`Preferably, an insulation foil covers the contact
`tabs
`natively, phlogopite, impregnated with a high temperature
`towards a flange area on the innerside of the hollow cylinder
`resistant silicone binding agent), flexible micanite FLM 521
`ofthe mouthpiece. The insulation foil includes, preferably in
`P, ete.
`the region of said flange area, at least two axially displaced
`Such a heating device can be used e.g. as an electric
`contact openings, said contact openings being preferably
`thermal resistor in a vaporizer device for vaporizing sub-
`configured such that they are axially located in one plane and
`stances containing active and/or aroma materials, e.g. in a
`expose each only one contact tab. The poles of a controlled
`disposable, single-use mouthpiece for an electronic ciga-
`or regulated electric voltage source are e.g.
`two axially
`rette. By simply attaching the heating device to a battery unit
`displaced rings, and,
`in the connected condition of the
`including a vacuum switch or vacuum governor, the elec-
`mouthpiece and the voltage source, a respective pole of the
`tronic cigarette will be ready for use. When the current
`voltage source is connected via the contact openings to the
`circuit is closed by the vacuum switch or vacuum governor,
`contact tabs and via the contact tabs to a respective end of
`the thermalresistor foil will heat and vaporizethe fluid from
`the dual coil and/or the sinuous line of the thermalresistor.
`the vaporizer membrane.
`Another aspect therefore concerns a vaporizer device for
`vaporizing substances containing active and/or aroma mate-
`rials, preferably configured as a mouthpiece in the form of
`a hollow cylinder with a fluid inlet and a fluid outlet. The
`vaporizer device comprises a heating device of the type
`described here and at least one vaporizer membrane which
`is in large-area contact with the thermal resistor. The vapor-
`izer membrane is also permeable to flowing fluids and is
`either wetted or can be wetted with a substance containing
`active and/or aroma materials to be vaporized. The thermal
`resistor and the vaporizer membrane(s) are preferably
`arranged orthogonally or at an angle to the direction of the
`fluids passing through the mouthpiece.
`The above-described structural design of the vaporizer
`device achieves not only a very high vaporizing efficiency
`but also the highest possible degree of vaporization unifor-
`mity due to fact that the invention provides the largest
`possible contact area between the thermalresistor foil and
`the vaporizer membrane or vaporizer membranes.
`Another essential advantage of the invention is that, by
`varying the geometrical configuration of the thermalresistor
`foil, e.g. by varying the numberof coil windings, the width
`
`tabs
`the contact
`According to a further embodiment,
`and/or the flange area preferably includeat least one locating
`groove and/or locating projection, said locating groove
`and/or locating projection having a complementary coun-
`terpart configured as at least one locating projection and/or
`locating groove on the controlled or regulated electric volt-
`age source. In the connected condition of the mouthpiece
`and the voltage source, a respective pole of the voltage
`source is connected to the contact tabs and via the contact
`tabs to a respective end of the dual coil and/or the sinuous
`line of the thermalresistor.
`According to another preferred embodiment, at least one
`pointed and/or sharp-edged opening tab consisting of a
`metallic foil or a thin sheet, preferably (but not coercively)
`ofthe same metallic foil, respectively samethin sheet, as the
`thermal resistor, extends, with its pointed and/or sharp-
`edged side first, from the thermal resistor axially in the
`direction of the flange of the mouthpicce and is implemented
`such that, when the mouthpiece and the voltage source are
`being connected, a sealing foil of a storage cartridge
`between the thermal resistor and the flange is punctured
`
`DEF_PUB_EDVA000025696
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`Case 1:20-cv-00393-LMB-TCB Document 1380-2 Filed 06/29/22 Page 9 of 11 PageID# 34258
`Case 1:20-cv-00393-LMB-TCB Document 1380-2 Filed 06/29/22 Page 9 of 11 PagelD# 34258
`
`US 9,814,265 B2
`
`8
`corresponding preferably to the so-called cork paper of
`cigarette filters and the paperboard being coated with a
`plastic film on the inner surface thereof,
`a permeable thermal resistor foil 1 in the form of a dual
`coil 101 punched from an aluminium foil, the perme-
`able thermal resistor foil 1 being coated with a insu-
`lating layer 11 of polyimide,
`two electric contacts 13 in the form of contact tabs 13 on
`
`the thermalresistor foil 1, which extend longitudinally
`within the hollow cylinder 31 along the inner surface
`thereof from the thermalresistor foil 1 up to and into
`the flange 33, each of the contacts having a cross-
`sectional shape corresponding to a quarter circle,
`two permeable vaporizer membranes 32 which are
`arranged suchthat, in axial the direction, one vaporizer
`membrane 32 is disposed upstream of and the other
`vaporizer membrane 32 is disposed downstream ofthe
`permeable thermal resistor foil 1 to be in direct large-
`area contact therewith, part of said vaporizer mem-
`branes being in direct contact with one another,
`a vaporizer buffer store 321 in the form of a ring of an
`absorptive non-woven fabric across which the vapor-
`izer membranes 32 are spanned like a drumhead,
`two opening tabs 14 in the form of spikes projecting from
`the contact
`tabs 13 into the flow channel 31 and
`
`7
`and/or cut open by said opening tab, said storage cartridge
`being filled with a substance containing active and/or aroma
`materials.
`Hence,the present invention not only allowsthe provision
`of a combination of storage and vaporization functions in a
`single-use mouthpiece which, in comparison with known
`devices of this type, provides a more efficient vaporization
`and a reduction of the amount of resources consumed, but it
`also offers a precisely defined, temporally limited consumer
`experience.
`Due to the fact that the above-described thermal resistor
`foil
`is preferably produced by means of punching or die
`bending, this production can excellently be integrated in a
`fast-running manufacturing process, and this constitutes
`another essential advantage of the present invention.
`
`BRIEF DESCRIPTION OF THE FIGURES
`
`In the following, advantages and advantageous further
`developments of the invention will be described making
`reference to the figures enclosed.
`FIG. 1 shows twovariants of a preferred embodiment of
`the heating device described in the present invention, in the
`case of which the thermalresistor 1, the contact tabs 13 and
`two opening tabs 14 are produced from a single piece of
`metal foil.
`a) A dual coil 101 as a thermalresistor 1.
`b) A sinuous line 102 as a thermal resistor 1 having
`additionally integrated therein a safety fuse 12.
`FIG. 2 shows how a mouthpiece 3 according to a pre-
`ferred embodiment of the present invention is connected to
`a voltage source 4, the two annular poles 41 of the voltage
`source 4 coming into contact with the contact tabs 13 via the
`contact openings 21 provided in the insulation foil 2,
`whereby the thermal resistor 1 can be supplied with current,
`the storage cartridge 36 being axially displaced within the
`hollow cylinder 31 towards the buffer storage 321 through
`the end face of the flange 33 of the voltage source 4,
`whereby the sealing foil 361 of the storage cartridge 36 is
`torn open by the opening tabs 14, whereupon the substance
`containing active and/or aroma materials flows into the
`buffer storage 321 and from there into the vaporizer mem-
`branes 32.
`
`a) Mouthpiece in inactive storage condition with intact
`sealing foil 361 and storage cartridge 36 at the original
`position, voltage source 4 not yet attached.
`b) Mouthpiece in activated condition of use with
`destroyed sealing foil 361 and storage cartridge 36 at
`the final position, with attached voltage source 4.
`
`
`DESCRIPTION OF A PREFERRED
`
`EMBODIMENT OF THE INVENTION
`
`According to a preferred embodiment of the invention a
`device according to the present
`invention is used as a
`thermal resistor 1, e.g. in a device described in WO2011/
`0099 20, ie. a device according to the present invention is
`combined with a device in which a fluid flows through at
`least one vaporizer membrane 32 in a flow channel 31,
`wherein the at least one vaporizer membrane 32 has been
`and/or is wetted with a substance containing active and/or
`aroma materials to be vaporized, the device according to the
`present invention supplying thermal energy to the substance
`containing active and/or aroma materials, whereby this
`substance is vaporized and supplied to the fluid stream.
`According to this embodiment, the device according to
`the present invention comprises
`a hollow cylinder 31 consisting of a plastic film, a
`paperboard and cover paper, said cover paper being
`wound around the outer surface of the paperboard and
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`resistor
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`foil
`
`extending axially from the thermal
`towards the flange 33,
`an insulation foil 2 extending longitudinally within the
`hollow cylinder 31 and within the contact tabs 13 along
`the inner surface thereof from the thermalresistor foil
`1 up to andintotheflange 33 with two axially displaced
`contact openings 21, the inner surface ofthe insulation
`foil 2 and the contact tab areas exposed through the
`contact openings 21 representing the flange area 331 of
`the flange 33 located on the side of the mouthpiece,
`an axially movable annular storage cartridge 36