PCT
`WORLD INnl.l.EcnJAL PROPERTY ORGANIZA 11ON
`lntemauonal Bureau
`INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT)
`(51) International Patent Cw.,Uication 6 :
`(11) lntemallonal Publlcat1on Number:
`WO 96/32854
`A24F 47/00
`
`A2
`
`•
`
`(43) International Publlcation Date:
`
`24 October 1996 (24.10.96)
`
`(21) International Application Number:
`(22) International FtUna Date:
`
`PCT/US961054l7
`
`19 April 1996 (19.04.96)
`
`(30) Priority Data:
`08/425,166
`08/425,837
`08/426,165
`
`20 April 1995 (20.04.95)
`20 April 1995 (20.04.95)
`20 April 1995 (20.04.95)
`
`us
`us
`us
`
`(71) Applicant (for all designated Sta1u uctpt US): PtDLIP
`MORRIS PRODUCTS INC. [US/US); 3601 Commerce
`Road, Richmond, VA 23234 (US).
`
`(72) Inventors; and
`(75) lnnntors/AppUcants (for US only): BAGGE'IT, James,
`D., Jr. (US/US]; 1825 Parkway Lane, Richmond, VA
`23225 (US). CLARK, David, A. [US/US]; 2910 Newquay
`Lane, Richmond, VA 23236 (US). COUNTS. Mary, Ellen
`(US/US]; 4506 Cutshaw Avenue, Richmond, VA 23230
`(US). COWLING, Palrick, C. (US/US); 4607 Black Oak
`Road, Richmond, VA 23237 (US). HOUCK, Willie, G., Jr.
`[US/US); 7753 Lake Forest Drive, Richmond, VA 23235
`(US). MOORE, Michael, A. [US/US): 2241 Banstead Road,
`Midlothian, VA 23113 (US). SANDERSON, Wesley, G.
`(US/US); 10412 Redbridge Road, Richmond, VA 23226
`(US). UHL, Richard, G. [US/US]; 13912 Beechwood Point
`
`Rd., Midlothian, VA 23112 (US). WATKINS, Michael,
`L. [US/US]; 3318 Grove Avenue, Chester, VA 23831
`(US). WRENN, Susan, E. [US/US]: 12130 Ivy Mill Road,
`Chesterfield, VA 23832 (US). FLEISCHHAUER, Grier,
`S. [US/US]; 1004 Lady Jean Court, Midlothian, VA
`23113 (US). HAYES, Palrick, H. (US/US); 4540 Forrcstal
`Road, Chester, VA 23831 (US). MORGAN, Constance, H.
`(US/US]; 9608 Summercliff Court. Chesterfield, VA 23832
`(US). HAJALIGOL, Mohammad, R. [US/US]; Apartment
`H, 3322 Old Courthouse Road, Richmond, VA 23236 (US).
`NICHOLS, Walter, A. (US/US); 10316 Edgebrook Court,
`Richmond, VA 23235 (US). SHARPE, David, E. [US/US);
`6500 Glebc Point Road, Chesterfield. VA 23835 (US).
`
`(74) Agents: MAGNONE. Joseph. R. et al.; Bums, Doane, Swecker
`& Mathis. P.O. Box 1404, Alexandria, VA 22313-1404
`(US).
`
`(81) Designated States: AL. AM, AT, AU, AZ, BB, BG. BR, BY,
`CA, CH. CN, CZ. DE. DK. EE, ES, Fl. GB. GE, HU, IS,
`JP, KE. KG, KP. KR. KZ. LK, LR, LS, LT. LU, LV, MD.
`MG, MK, MN, MW, MX. NO. NZ. PL. PT, RO, RU, SD,
`SE, SG. SI, SK. TJ. TM, TR, TT. UA. UG, US, UZ, VN.
`ARIPO patent (KE, LS, MW, SD, SZ. UG). Eurasian patent
`(AM, AZ, BY, KG, KZ. MD, RU, Tl, TM), European patent
`(AT, BE, CH, DE. DK. ES. Fl, FR, GB, GR. [E. IT, LU.
`MC, NL, PT, SE), OAP! patent (BF, BJ, CF. CG. Cl. CM,
`GA, GN. ML. MR, NE, SN. TD, TG).
`
`Published
`Without intunatlonal search report and 10 bt republished
`upon receipt of that report.
`(54) Title: CIGARE'ITE AND HEA'IB FOR USE IN AN ELECTRICAL SMOKING SYSTEM
`
`(57) Abstract
`
`A cigarenc (23) comprises a tobacco rod having filled and unfilled portions arranged so that electrical heater clements (31) may
`overlap both portions. The rod includes a tubular tobacco web. The web is conslJ'UCtcd by converting tobacco feedstock into a continuous
`sheet of tobacco web and converting the continuous sheet of tobacco web into one or ore bobbins of tobacco web suitable for automated
`manufacture of cigarettes. A heater (25) comprises a supporting hub and electrically resistive heater blades (37) defining a receptacle (27)
`for an inserted cigarette (23). Each blade comprises first and second heater blade legs each having a first end and a second end, and a
`connecting section connecting the second end of the first leg and the first end of the second leg. The blades (37) are heated by a resistive
`heating circuit and heat the inserted cigarette (23). The legs are separated by a gap to permit entrainment of flavour substances upon
`drawing.
`
`Ex. 2021-0001
`
`

`

`FOR THE PURPOSES OF INFORMATION ONLY
`
`Codes used to identify States party to the PCT on the front pages of pamphlets publishing international
`applications under the PCT.
`
`AM
`AT
`AU
`BB
`BE
`BF
`BG
`BJ
`BR
`BY
`CA
`CF
`CG
`CH
`Cl
`CM
`CN
`cs
`CZ
`DE
`DK
`EE
`ES
`Fl
`FR
`GA
`
`Annenia
`Austria
`Australia
`Barbados
`Belgium
`Burkina Faso
`Bulgaria
`Benin
`Brazil
`Belarus
`Canada
`Cen1111I African Republic
`Congo
`Switzerland
`COie d'Ivoire
`Cameroon
`China
`Czechoslovakia
`Czech Republic
`Gennany
`Dcnmarlc
`Estonia
`Spain
`Finland
`France
`Gabon
`
`GB
`GE
`GN
`GR
`HU
`IE
`IT
`JP
`KE
`KG
`KP
`
`KR
`KZ
`LI
`LK
`LR
`LT
`LU
`LV
`MC
`MD
`MG
`ML
`MN
`MR
`
`United Kingdom
`Georgia
`Guinea
`Greece
`Hungary
`Ireland
`Italy
`Japan
`Kenya
`Kyrgystan
`Democratic People's Republic
`of Korea
`Republic of Korea
`Kazakhstan
`Liechtenstein
`Sri Lanka
`Liberia
`Lithuania
`Luxembourg
`Latvia
`Monaco
`Republic of Moldova
`Madagascar
`Mali
`Mongolia
`Mauricania
`
`MW
`MX
`NE
`NL
`NO
`NZ
`PL
`PT
`RO
`RU
`SD
`SE
`SG
`SI
`SK
`SN
`sz
`TD
`TG
`TJ
`TT
`UA
`UG
`us
`uz
`VN
`
`Malawi
`Mexico
`Niger
`Netherlands
`Norway
`New Zealand
`Poland
`Ponugal
`Romania
`Russian Federation
`Sudan
`Sweden
`Singapore
`Slovenia
`Slovakia
`Senegal
`Swaziland
`Chad
`Togo
`Tajikistan
`Trinidad and Tobago
`Ukraine
`Uganda
`United States of America
`Uzbekistan
`Viet Nam
`
`Ex. 2021-0002
`
`

`

`WO96/32854
`
`PCT/US96/05417
`
`CIGARETTE AND HEATER FOR USE IN AN ELECTRICAL
`SMOKING SYSTEM
`
`The p=esent invention relates generally to electrical
`smoking sys:ems, and in particular to cigarettes adapted to
`cooperate with electrical lighters of electrical smoking
`sys:ems, an~ to a heater for use in elctrical smoking
`sysce:ns.
`
`the
`
`Tradi:ional cigarettes deliver flavor and aroma to c~e
`,.. . .
`-
`.
`.
`curing wuicn a mass or
`smoker as a result of combustion,
`cor.bustible material, principally tobacco, is combusted at
`te~pe=atu~es which often exceeds 800° C du~ing a ?~ff. ~ea~
`is drawn t~rough an adjace~t mass of tobacco by drawing on
`the mouth end. During heating, i~efficient oxidation of the
`co~~ustible material releases various gaseous corr~ustion
`produces a~d distillates from the tobacco. As these gaseous
`produces are drawn tru:-oug~ the cigarette, they cool and
`condense to form an aerosol which provides the tastes and
`aromas associated with smoking.
`
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`Ex. 2021-0003
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`

`W096/32854
`
`PCT/US96/05417
`
`2
`~raditional cigarettes have various perceived
`c.rawba:ks associated with them. One of these is t~e
`produc:ion of sidestream smoke during smoldering between
`puffs which may be objectionable to non-smokers. Once lit,
`they must be fully consumed or be discarded. Re-lighting a
`tradi:ional cigarette is possible but is usually an
`unat:ractive proposition to a discer:1ing smoker for
`subjec:ive reasons (flavor, taste, odor).
`A..~ alte::-native to the more traditional cigare::es
`inclu=es those in which the combustible material itse:: does
`not i:self release the tobacco aerosol. Such smoki~g
`artic:es may comprise a combustible, carbonaceous hea:ing
`eleme~: (~eat source) loca:ed at or about one e~d cf :~e
`smoki~g ar:icle and a bed of tobacco-laden ele~e~ts l=cated
`
`eleme~: is ig:iited with a match or cigarette lighter, and
`when a smoker draws upon the cigare::e, heat ge~eratec by
`the heating element is communicated to the bee of tobacco(cid:173)
`lade~ eleme~ts so as to cause the bed to release a totacco
`aerosol. While this type of smoking device produces :ittle
`or no sidestream smoke, it still generates proc~cts c:
`combus~ion ac the heat source, and once its hea: so~r=e is
`ignited, it is.not readily snuffed for future use i~ a
`pract:.=al sense.
`In both the more conventional and carbon heated
`devices described above, combustion takes place duri~; thei=
`use. This process naturally gives rise to many by-;r=cucts
`
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`Ex. 2021-0004
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`

`W096/32854
`
`PCT/US96/05417
`
`3
`
`as the combusted material breaks down and interacts with t~e
`sur=ounding atmosphere.
`
`Copending a~d commonly assigned, U.S. patent
`
`applications Serial No. 08/380,718, filed September 30, 1995
`(PM 1697 Cont) and Serial No. 07/943,504, filed September
`11, 1992 (?M 1550) together with US pa:ents 5,093,894,
`
`5,225,498, 5,060,571 and 5,095,921 disclose various heating
`elements and flavor generating articles which significantly
`reduce sidestream smoke while permitting the smoker to
`selectively suspe~cl and reinitiate smoking. However t~e
`cigarette articles disclose~ in these ;atents are not very
`durable and may cc:lapse, tear or break from extended or
`heavy hanc:ing.
`:n ce=tain circ~msta~ces, these prior
`cigarettes may c=~sh as they are even weaker and may tear~~
`break as t~ey a=a removed f=orn the lig~:er.
`
`The a:oreme~:ioned, United States patent application
`Serial No. 08/380,ilB (?M 1697 Cont) a~d US 5,388,594
`describe an electrical smoking system including a novel
`electrically powered lighter and a novel cigarette that
`cooperates with t~e lighter. The preferred embodimenc of
`the lighter inclu~es a pluralicy of me~allic serpentine
`heaters disposed in a configuration that slidingly receives
`a tobacco rod·por~ion of the cigarette.
`
`The preferre: embociiment of the cigarette in Serial
`No. 08/380,718 (PM 169i Cont) and also disclosed in EP-A-
`0,615,411 compris~s a tobac=o-laden tt:.bular carrier, a
`cigarette paper overw::-apped about the tubular carrier, an
`
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`W096/32854
`
`PCT/US96/05417
`
`4
`
`arrangement of flow-through filter plugs at a mouthpiece end
`of the carrier and a filter plug at the free (distal) end of
`the carrier. The cigarette and the lighter are configured
`such that when the cigarette is inserted into the lighter
`and as individual heaters are activated for each puff,
`localized charring occurs at spots a.bout the cigarette in
`the locality where each heater was bearing against the
`cigare:te (hereinafter referred to as a •heater footprint#).
`Once all the heaters have been activated, these charred
`S?Ots are closely spaced from one a~other and encircle a
`central portion of the carrier por:ion of the cigarette.
`Depending on the maxim~~ temperatures and total
`
`~ani=es: mere than mere discolorations of the cigarette
`;aper.
`In mos: applications, the c:.arring will create at
`least minute breaks in the cigarette paper and the
`i.:...,derlying carrier material, which breaks tends to
`mechanically weaken the cigarette. ?or the cigarette to be
`~ithdrawn from the lighter, t~e charred spots must be at
`least partially slid past the heaters.
`In aggravated
`circumstances, such as when the cigarette is wet or toyed
`with or twisted, the cigarette may be prone to break or
`leave pieces upon its withdrawal from the lighter. Pieces
`left in the lighter fixture can interfere with the proper
`operation of the lighter anc/or deliver an off-tas~e to the
`s~oke of the next cigarette.
`If the cigarette breaks in two
`while being withdrawn, the s~oker may be faced not only with
`
`SUBSTITUTE SHEET (RULE 26)
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`Ex. 2021-0006
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`

`W096/32854
`
`PCT/US96/05417
`
`5
`
`the f=ustration of failed cigarette product, but also with
`the prospect of clearing debris from a clogged lighter
`before he or she can enjoy another cigarette.
`The preferred embodiment of the cigarette of OS Ser.
`No. 08/380,718, EP-A-0,615,411 and Patent No. 5,388,594 is
`essentially a hollow tube between the filter plugs at the
`mouthpiece end of the cigarette ~~d the plug at the distal
`end. This construction is believed to elevate delivery to
`t~e smoker by providing sufficient space into which aerosol
`can evolve cff the carrier with minimal impinge~ent and
`condensation of the aerosol on any nearby surfaces.
`Several proposals have been advanced whic~
`significantly reduce undesired sidestream smoke while
`pe:::7.!itting the smoker to s~spend smoking of the article for
`a desired period and then to res~me smoking. For examp~e,
`commonly assigned U.S. Patent Nos. 5,093,894; 5,225,498;
`5,060,671 and 5,095,921 disclose various heating elements
`ar.d flavor ~enerati~g systems. ~?-A-0,615,411 and U.S.
`Patent No. 5,388,594 disc~ose an electrical smoking system
`having heaters whic~ are actuated upon sensing of a draw by
`control and logic circuitry. The heaters are preferably a
`relatively thin se=-;>entine struct~=e to transfe= ade~~a~e
`amounts of heat to t:i.e cis-arette and is lightweig=it.
`Although these devices and heaters overcome the
`observed problems a~d achieve the stated objectives, ma~y
`e~~odiments are subje~t to mechan~cal weakening and possible
`failure due to stresses induced by inserting anc removi~g
`
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`W096/32854
`
`PCT/US96/05417
`
`6
`
`the cylinc.=ical tobacco medi~m and also by adjusting er
`toying wi:h the inse=:ed cigarette.
`Furt~er, u.~desi=ed elec:=ical shorts can occ~r i: the
`shape of a heater assembly is altered, e.g., by adjus:ing or
`toying wi:h the inser:ed cigarette.
`Also, the elect=ical smoking systems employ
`electrica:ly resistive heaters which have necessi:ated
`relatively complex elec:rical connec:ions which can be
`dis:urbeci by inse=tion a..~d removal c: the ciga=et:e.
`Whe~ we included c~t filler wi:h the hollow s:ruc:~re
`of the ciqarette in E?-A-0,6:5,411, i: was discovered :iat
`such ciga=et:es when =~lly filled wi:h cut :iller tobacco
`te~ded tc opera:e ade~~ately in an e:ectrical lig~ter for
`
`T~e same ptenome~on wo~ld te~= to occur
`when more tradi:ional cigare::es were smoked in an
`electrical lighter such as t~e electrical lighter disclosed
`in EP-A-0,615,411.
`When left t:..~filled, the hollow cigare::e s:r~ctu=es of
`the prefer=ed er.~odime~:s of E?-A-0,615,411 were also
`somewhat vulner~le to colla~se from extre~e or rough
`
`handling.
`The invention, in its various aspects, is defined by
`the inde;endent claims appa~ced hereto.
`A ci=a=ette embccying aspects o: the presen: invention
`has the acvantage of containing cut filler yet being
`operable with cc~siste~cy whe~ smoked as pa=t of an
`
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`Ex. 2021-0008
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`W096/J2854
`
`PCT/US96/05417
`
`7
`
`electrical smoking system.
`A ci=arette embodying aspects of the invention has the
`advantage of containing cut fille=, and being adapted to
`cooperate with an elect=ical ligh:er and rende= satisfying
`levels of taste and delivery.
`A ci=arette e~~odying aspec:s of the present invention
`has the advantage of including cu: fille=, yet ?roviding
`improved consistency in delivery =rom pu=f to puff.
`Ciga=ettes embodying aspects of the inven:ion may be
`readily manufactured and packed i~to at:ractive ?ackaging.
`Cigarettes err~odying aspects of the inven:ion may be
`physically robust a~d minimize cc~densation and/or
`filtration of aerosol within the cigare::e and/or the
`lighter. ?hey may =~rthe= be resistive tc breakage during
`t~e withd=awal cf t~e cigarette =rom the lighter thereof.
`Cigarettes err~odying aspects of the present invention
`and suited for consumption with a lighter of an electrical
`smoking system, and may be less v~lnerable to collapse or
`breakage during rough handling by the consumer.
`Ciga=ettes err~odying aspects of the present invention
`and suited for consumption with a lighte= of an electrical
`smoking system may not be prone to collapse or breakage
`during the manufactu~e or packing of the cigare~te.
`Ciga~ettes embodying aspects of the inven:ion and
`opera:ive with an electrical lig:.~er may be conducive to
`cost-effective met~ods of manufac:ure, even at ~reduction
`speec.s.
`
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`W096/J2854
`
`PCT/US96/05417
`
`8
`
`~eate::::-s
`
`em.l:::cdying
`
`as:;:ec':s of
`invention may
`the
`tobacco medium without sustained
`a
`f::::-om
`smoke
`gene::::-ate
`combustion, may reduce the creation of undesi::::-ed sidestream
`smoke, may pe::::-mit the smoker to suspend and resume use, and
`may improve aerosol generation within the smoking system.
`A heater str~=tu=e embodying the invention may provide
`a desi::::-ed numbe::::- of pu==s and be straightforwardly modified
`c:.~ration of puffs provided
`the number a.'"ld/o::::-
`to change
`without sacrificing su=jective q,~alities of the tobacco.
`invention may be
`the
`A heating eleme~t embodying
`and ==~oval of
`inse::::-tion
`for
`mechanically s~itable
`
`a
`
`cigarette.
`~-'"l electrica::.y ::::-esisting ::.eate::::- e:nbocying spects of
`conneccior:s
`to
`invention may have
`
`an
`
`the
`associated power sc~=ce.
`A heating ele:nent embodying aspects of t:ie invention
`.may be mechanically stable during heating cycles.
`~mbodiments o: the inventio~ may minimize va=iation of
`an inte=face between the heating element and t:ie cigarette
`to avoid changes i~ heat transfe=.
`the
`e::-.:::>oc:.ying
`heater
`economical to manufactu=e.
`One prefer::::-ec embodiment p=ovides a smoking system for
`The
`deli ve::-ing a flavc=ed tobacco =esponse to a smoke=.
`system includes a cigarette an:: an electrically operated
`includes a plurality of electrical
`li~:i.t.e::::-
`lighte=, which
`heate::-s, with eac~ of the heate=s being adapte: to, either
`
`invention may
`
`be more
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`W096/32854
`
`PCT/US96/05417
`
`9
`
`release
`thermally
`to
`concert,
`i:i.
`singula=ly or
`a
`predetermined quantity of tobac:o aerosol from the ciga=ette
`a
`The cigarette comprises
`its/their activation.
`upon
`tubular tobacco web, wherein a first portion of the t~ular
`tobacco web is filled with a column of tobacco, preferably
`the
`for.n of cut fille=, and a second portion of
`in the
`to
`tobacco web is left t:.:i.::illec. or hollow so as
`tubular
`define a void in the tobacco column.
`aforementioned
`the
`particu.larly,
`More
`tubula:::(cid:173)
`from a
`::armed
`tobacco rod
`preferably comprises a
`tobacco web and a plug of tobac:o loca::.ed within t~e tubular
`tobacco roe. is aciapted to be sli::iingly
`The
`tobacco web.
`suc::i --- ...
`the
`f:.xture
`received by an electrical hsa:er
`-·-=1-
`tobacco ==C at a
`t~e
`locate alonss~Ce
`heate= ele~ents
`the free e:1=. and a:: opposite enc of the
`location be::.wee:1
`(or column) of tobacc::>
`P'!:"e:Eerably the plug
`tobac:::o roe..
`extends f:::-om the free end of ~~e toba:::co rod to a location
`that is spaced from the opposite end of the tobacco rod so
`the
`tollow portion) adjacent
`(or
`a void
`to de:::ine
`as
`opposite e~c.
`the
`t~e cigarette a~d
`relative dimensions of
`The
`heater fixt~re of the lighter are determined such ~~at upon
`the lighte~, ea.ci hea:.e=
`insert.ion of · the cigarette 1:-.~o
`tc::acco rod at a prec.e~ermined
`will locate alongside the
`locat.ion along the tobacco roe. and, preferably, such that
`the longituc.inal extent of c::::-.. cact between the heater and
`the cigare~~e (hereinafce::::- "heater footprint") superposes at
`
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`

`WO96/32854
`
`PCT/US96/05417
`
`10
`
`In
`
`least a po=tion of the aforementioned void a.."1.d at leas-c a
`In so doing, consistent and
`por:ion of the plug of tobacco.
`the ciga=-ette is
`satisfacto:y delivery is 'obtained when
`electrically smoked, and condensation of tobacco aerosol at
`or about the heater elements is reduced.
`t:i.e relative dime~sior:.s of
`t:i.e alternative,
`:::ixture of
`hea.te=
`the
`cigarette and
`i:it.o
`dete::::,ninec. such that upon i::se=tion of the ciga!'"e':te
`the light.er, each heat.er will locate alongsice the tobacco
`least some,
`not. all
`heater
`roe. such t:iat
`footprints super-pose only the filled portion c= t~e tobacco
`.
`- .
`.
`n sucn cor.=:.;-urat::..or.s,
`tcbacco plug) .
`:he
`rod (over -::i.e
`I
`voi~ may still be employed to facilitate aercscl formation
`anc to he:p cool the smok:.
`
`the
`
`a ...... --
`
`tubular tobacco web so as to provide t.he appearance and feel
`..., __
`trac.itiona: cigaret,te during ha::dl i::g by the
`of the m,... .......
`smoker.
`The
`
`nonwcven
`
`a
`
`tobacco web preferably comprises
`tobacco rna:-.e:::-ial
`laye= of
`tobacco base we:0 and a
`along at least o::e side of t:i.e tobacco base we=.
`The cigarette preferably also includes filter tipping
`at the aforementioned opposi:e end of the tobacco rod, w~ich
`through filter plug (also k::own i:: the art
`comprises a flow-
`as "whistle-throl.!gh" plugs) , a mout:i.piece filte::- plug and
`tipping paper at:aching the plugs to the tobac=o red.
`Wher. a cisarette embodying the presen~ inventior: is
`
`located
`
`SUBSTITUTE SHEET (RULE 26'
`
`~D ORIGINAL I
`I
`
`Ex. 2021-0012
`
`

`

`W096/32854
`
`PCT/0S96/05417
`
`'-•--
`
`-~a
`
`11
`inserted into a lighter of a.n elec~rical smoking system, the
`cigaret::.e regiscers agai::st a stop located withi:: the heater
`fixture of the lighter (or at: some equivalent re~ist:ration)
`----
`the electrical heating elements of
`lighter
`that
`so
`locate consistently alongside the cigarette at ge~erally the
`same location for each cisarette. As a puff is initiated,
`at least one of :he heaters of the lighter is responsively
`the afcrementioned
`the cigarette at
`to heat
`activated
`locaticr. along the tobacco rod. As a puff progresses, ~ ... A
`tobacco rod is heated a::d aerosol is driven of= :.he tobacco
`Where the heater footpri~: supe~oses
`is almost
`tobacco ae=:-oso:
`roe.,
`tcbac::::o
`-::he
`in
`the vci::i
`the
`space defined within
`t:1e
`:..:::.o
`released
`immedia:::ely
`:::n . .i..t c: the
`tobac:::o rod and d::::-awn
`the
`unfilled portior:. of
`this
`tobacco web contributes mes:. of
`~he
`cigare::.e.
`fracti:::n of the :ocal ae=:-osol delivered by the c::arette and
`its immediacy is believed to favorably affect the nature and
`extent of the smoker's craw on the cigarette. Because of the
`greater mass cf tobacco at the filled portion of ~he tobacco
`rod, t~ere is a slight celay in the release of ae=osol from
`where t~e hea~== footprint superposes the fille~ portion of
`the rec. The aerosol w~ic~ is driven off the fi:led portion
`tobac::::6 rod contributes an adciitional, dominating
`the
`of
`flavor a.,.~d character to the smoke.
`the
`is
`inven:.ion
`the present
`A further aspect of
`capacity to acj~st delivery of a cigarette of a:: electrical
`smokin~ system, wherein the proportional amoun= of overlap
`
`SUBSTITUTE SHEET (RULE 26)
`
`~•.,.
`
`BAD ORIGINAL
`L
`
`'
`
`Ex. 2021-0013
`
`

`

`W096/32854
`
`PCT/US96/05417
`
`12
`
`between the filled and unfilled portions of the tobacco rod
`i::1
`t:i.e heater footprint effects desired adjust~encs
`by
`c.elive=Y from one brand of cigarette to another or within
`line ex::.ensions of the same brand.
`invention is a
`the present
`Yet another aspect of
`methoc of improving levels and consistency of delive=Y of
`aerosc: from a c~garette operated with an electronic heater
`device, wherein t~e cigaret::.e has a free end and an opposite
`7he method comprises t~e steps of superposing a heater
`end.
`the
`tobacco-filled porticn of
`a
`footprint over both
`cigars::.::.e adjacent t~e free end and an unfilled pcr::.ion c:
`e::1d,
`opposite
`wr:.ile
`ac.jace::t
`t:i.e
`::::iga:?:'et-:e
`the
`a:.ong
`heating
`si.r.ul::.aneously
`
`enc. t:-.:reof .
`inve::::.ion is
`the preser-.::.
`S::.ill a::oc~er aspe:::t
`provic.e a filler containing cigarette that is operative wit~
`tobacco
`an ele::::trical lighter, which cigarette includes a
`rod ha.7ing a free-flow fil:er a::d a filler-free roe. po:?:"ticn
`aaJ ace::c the free flow fil ::.er so as to promote consisten:
`aeros::::2. produ::::tion.
`invention
`is
`present
`the
`of
`aspe::::
`~_.other
`flax or wooc.
`having
`web
`toba::::=:i
`tubular
`rein:=:=ced
`cellu::isic fi'.:>er added to its base web so as to provide
`t;:e alternative, cellulosic fiber
`I!".
`addit~~nal strength.
`the
`in
`included
`be
`feeds~ock may
`stem
`-:obacco
`from
`composition o= t~e base web as a reinforcing age~::..
`
`a
`
`SUBSTITUTE SHEET (RULE 26)
`
`I
`LBAD ORIGINAL •
`
`Ex. 2021-0014
`
`

`

`W096/32854
`
`PCT/US96/05417
`
`13
`
`Ro=ustness of
`
`the ciga=ette
`
`is
`
`improved by
`
`the
`
`i~clusicc of cut filler within the confines of its tubular
`
`tcbacco web so as to provi~e a cigarette which can better
`
`w:. t:is tanc:.
`
`handling,
`
`handling
`manufacc~ring machines and by consumers.
`
`including
`
`by
`
`cigarette
`
`A heater embodying the invention preferably comprises
`
`a suppor~ing hub and a plurality of electrically resistive
`
`heater b:ades defining a receptacle to receive an inserted
`cigarette. Each blade
`
`comprises a firs'C heate:::- blade leg
`ha·.ring a ::irst end and a sec:::md end anc. extenc:.ns; at the
`
`first er.c :::::-om t~e suppor<cing nub, a second heate:::- blade leg
`
`having a
`
`::irst e:.1d and a
`
`second er:.c.,
`
`and a c::::n...ecting
`
`section ==~necti~g the second end of the first les and the
`
`first e~::. of the second leg. The second end of the second
`
`the supporting hub a~ci is electrically
`
`i~s~latec the:::-ef:::-om. A
`
`resistive heating ci:::-cuit is formed
`
`to heat
`
`t:-,e electrically resist.i ve heat.er blade which in
`
`t·•--, heats the inserted cigarette.
`The first and second
`1 ...... -
`-=:, are separated by a gap to permit entrainment of air to
`ai::. in ev::lving flavor substances from the heated cigarette
`
`~pen drawi~g by a smoker.
`Embc~iments of the invention will now be desc=ibed, by
`
`way of example, and with reference
`
`to the accompanying
`
`ci=awings, wherein:
`Figs. 1 and 2 are perspec<cive views of an electronic
`
`s~oking system in accordance with a preferred embodiment. of
`
`the prese~= invent.ion;
`
`' 1·
`
`If •'I,,.
`
`SUBSTITUTE SHEET (RULE 26)
`
`tAD ORIGINAL i)
`
`Ex. 2021-0015
`
`

`

`W096/328S4
`
`PCT/US96/05417
`
`14
`
`Fig. 3 is a breakaway perspective view of a cigarette
`engaged within the heater fix:t:ure of
`shown in Fig. l;
`
`the smoking system
`
`Fig. 4A is a
`
`sectional side view of a cigarette
`constructed in accordance with a preferred embodiment of the
`present invention;
`
`Fig.
`
`43
`
`is
`a detailed perspective view of
`the
`cigarett:e shown in Fig. 4A, wit~ certain components of t~e
`cigarette being partially u::.ravelled;
`.., __
`-......
`Figs.
`flow diagrams of steps
`in a
`preferred process of making bobbins of the tobacco web of
`s;._
`the cicarette shown in Figs. 4_; and 43, whe:?:ei::. Fig.
`
`51'. and SB
`
`of tobacco web, and Fig. 53 shows t~e st:;s of converting
`the tobacco web sheet into =obbins or tobac=~ web;
`Fig. 6A is a cross-sectional side view of a cigarette
`construcced
`in accordance with
`a
`embodiment of the present invention;
`
`substa~tially hollow
`
`6B
`
`Fig.
`
`is a graphical repr:sentation cf a~rosol
`production versus time du=ing each puff as generated by a
`cigarette constructed in accorda:i.ce with t:ie substantially
`hollow embodiment of the present inve~tion o= Fig. 6A;
`Fig. 6C ·is a layout of a smoke measuring device that
`was used to establish data that is re~resented in Figs. 63,
`7B and 8;
`-i:- • • ig. 7A is a cross-sectional side view of a cigaretce
`constructed in accordance with a fully-filled embodiment of
`
`SUBSTITUTE SHEET (RULE 26)
`
`\. BAD QRIGINJJ-i... , )
`'-
`
`Ex. 2021-0016
`
`

`

`W096/32854
`
`PCT/US96/05417
`
`15
`
`the present invention;
`Fig. 73
`is a graphical representation of aerosol
`production versus time during each puff as generated by a
`cigaret:e constructed in accordance with the fully-filled
`embodiment of Fig. 7A;
`Fig. 8 is a graphical comparison of aerosol volume at
`each se~~ential puff as delivered by each ci;aret:e of those
`describec in reference to Figs. 4A, 6A and 7A;
`Fig. 9 is a graphical presentation of the relationship
`between the delive:::y of total particulate matter
`(TPM) and
`the amo~::t of heater overlap ever the :ille= portion of the
`-
`.
`-oartiallv filled cic-a:-e:te constructed i:: ac:::or::.ance with
`-
`the preferred ecn.bodiment (Fig 4A) of t~e present :..~venticn;
`Fig. 10 is a cross-se::::ional s:..=e view of a cigare:te
`cons:ruc:ed in accordance with a secc~c preferred embodiment
`of the present invention;
`Fig. 11 is a cross-sec:ional side view of a cigarette
`constructed in accordance with a third preferred ecn.bodiment
`of the present invention;
`FIG. 12 is a side, cross-sectic::al ·v:..ew of a heater
`fixture embodying a further aspect of t~e present invention;
`FIG. 13 is a side view of a heater assembly embodying
`a further aspect of the present invention;
`FIG. 14 is a sicie, c:-oss-sectior.al v:.ew of a heater
`fixture embodying a furcher aspect of the present invention
`employing an electrical insulator coating;
`FIG. 15 is a side, c:::-oss-sectior,_al v:.ew of a heater
`
`SUBSTITUTE SHEET (RULE 26)
`
`~AD ORIGINAL "
`
`Ex. 2021-0017
`
`

`

`WO96/32854
`
`PCT/US96/05417
`
`16
`
`fixture e~~odying an as?ect of
`the present
`invention
`employing an electrical i~sulator coati::-:.g forming a hub;
`FIG. , ,.
`-0 is a side, cross-sectional view of a heater
`fixture embodying an aspect of the present invention having
`serpentine shaped heacer blade legs;
`FIG. 17A is £ront, cross-sectional view of a heater
`blade having
`a
`plana= underside
`facing
`an
`cigarette;
`FIG. 173 is a front, cross-sectiacal view of a heater
`blade havi:1g
`an
`a::1gled underside
`facing
`an
`ciga~et:~e;
`
`inserted
`
`inserted
`
`FIG.
`l7C is a f:-cnt, c=oss - sect i::::r:al view of a heater
`havi:-.g
`a
`c'.!.=ved
`underside
`:facing
`an
`i:i.serr.ed
`
`blade
`ciga:?:"et<ce;
`FIG. 13 is a top view of a symrner.=ical arrangement of
`heater blades in a flat state prier to rolling;
`FIG. 19 is a top view of a nan-symmetrical arrar.gement
`of heater blades in a flat state prior to rolling;
`radial c=css-sectional view a:
`FIG.
`20
`is a
`the
`electrical s~oking sysr.em embodying the presen-c invention,
`showing an alternative heate= embodime:1t;
`FIG. 21 is a longitudinal c=oss-sectional view of the
`flavor cart=idge receiving cavity of the electrical smoking
`system of FIG. 20, taken from line A--A cf FIG. 20;
`FIG.
`22
`is a
`radial cross-sectional view showing
`anothe= alte=~ative heater embodiment; a~d
`FIG. 23 is a longitudinal c=oss-sectional view of the
`
`SUBSTITUTE SHEET (RULE 26)
`
`\BAD ORIGINAL
`L...
`
`,
`
`Ex. 2021-0018
`
`

`

`W096/32854
`
`PCT/US96/05417
`
`17
`
`flavor cartridge receiving cavity of the elec=rical smoking
`system of FIG. 22, taken from line B--B of FIG. 22.
`
`Referring to Figs. 1 and 2, a preferred embodiment of
`the present invention provides a smoking sys.:em 21 which
`includes a partially-filled, filler cigare:=e 23 and a
`reusa=:le
`light.e:::- 25.
`The cigarette 23
`is ac:.a;,ted to be
`inser:ed into and removed from a receptacle 2 7 at a front
`end pert.ion 29 of t~e light.er 25. Or.ce the ci~are::e 23 is
`inser:ed,
`the smoki::1g sys-cem 21 is used in :..1..:c.:1
`-c::.e same
`fashion as
`a more
`trac.itional cigarette, ~u: without.
`light.i~g or srnolderi::g the cigare:-ce 23
`. The cigarette 23
`is discarded aft.er one or mc::-e
`;,uf:: cycles.
`each cigarette 23 provides a
`total of eigi::: puffs (puff
`cycles) or more pe::-
`smoke; howeYer it is a matte:::- cesign
`expedient to adjust to a lesser or greater tot.al number of
`availa~le puffs.
`':'he lighter 25 i=.cludes a housing 31 havi:-ag front and
`rear ~ousing portions 33 and 35. One or more batteries 35a
`are re~ovably located within the rear housing portion 35 and
`supply energy to a plurality of electrical~y resistive,
`heati::g elements 37 which a..... arranged wit=:i:i.
`the front
`housi~g portion 3 3 adjacent the receptacle 27. A control
`circuit 41
`in
`the front housing por~ion 33 es~a.:::lishes
`
`SUBSTITUTE SHEET (RULE 26)
`
`\,BAD ORIGINAL I
`
`Ex. 2021-0019
`
`

`

`WO96/32854
`
`PCT/US96/05417
`
`18
`
`elect:::ical communication between the batteries 3:a and the
`is
`the rear por-:.:.on 3S
`Prefe:::ably,
`heater elemencs 37.
`adapted to be readily opened and closed, sue~ as wi:h screws
`the
`to facilitate replaceme::t of
`or snap-::it components,
`If desired, an elect:::ical socket or cc::tacts may
`batteries.
`be providei for recharging the batteries with house current
`or the like.
`t~e front housing po:::tion 33 is :::emovably
`P:::efe:::ably,
`----
`r .......
`such as with a
`housing portion 35,
`t.he
`joined to
`is
`The housi::g 31
`socket fit.
`joint or a
`dovetail
`:-r,at:erial.
`heat-resisr:.a:1.t
`ha:::d,
`a
`from
`preferably made
`:;::-e=eraoly,
`include metallic or, mo:::e
`Prefe::::::ed mate:::ials
`polymeric ~ater~a~s. Prefe:::ably, the housi::g ~, ~as overall
`dimensio~s of abou-: 10.7 cm by 3.8 cm by 1.5 c~. so that i :
`may fit comfor-:ably in the hand of a smoker.
`to provide sufficient
`The batteries 35a are sized
`in-:enced and
`function as
`to
`the heate:::s 37
`for
`power
`type.
`recl-.argea;::le
`replaceable and
`preferably comprise a
`a ... .,. --
`as
`such
`power
`sources of
`Alternative
`the