EP0174645A2
Expired / Lapsed
EP
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Smoking article
Assignee: RJ Reynolds Tobacco Co
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Filing: 1985-09-11
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Granted: —
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Expires: 2005-09-11
Abstract
Abstract The present invention relates to a smoking article which produces an aerosol that resembles tobacco smoke, but contains no more than a minimal amount of incomplete combustion or pyrolysis products. Preferred embodiments of the present smoking article comprise a short combustible carbonaceous fuel element, a heat stable substrate bearing an aerosol forming substance. a heat conducting member which contacts a portion of the fuel element and the substrate, and an insulating jacket surrounding at least a portion of the fuel element. The smoking article of the present invention is capable of providing an aerosol "smoke" which is chemically simple, consisting essentially of air, oxides of carbon, water, and the aerosol which carries any desired flavorants or other desired volatile materials, and trace amounts of other materials. The aerosol "smoke" from the preferred embodiments has no significant mutagenic activity as measured by the Ames Test. ln addition, the article may be made virtually ashless so that the user does not have to remove any ash during use.
Inventors
- 👤 Andrew Jackson Sensabaugh, Jr.
- 👤 Henry Thomas Ridings
- 👤 John Hughes Reynolds Iv
- 👤 Michael David Shannon
- 👤 Chandra Kumar Banerjee
- 👤 Ernest Gilbert Farrier
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 16:29
CPC Classifications
A; A24; A24F; A24F40/00; A24F40/40; A24B; A24B15/00; A24B15/10; A24B15/16; A24B15/165; A24D; A24D1/00; A24D1/04; A24D1/042; A24D1/18; A24D1/22; A24F42/00; A24F42/60
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
64 words
A smoking article comprising: (a) a carbonaceous fuel element; (b) a physically separate aerosol generating means including a substrate bearing an aerosol forming material ; and (c) a mouthend piece; the fuel element and the substrate being arranged in a conductive heat exchange relationship such that the heat stable substrate receives conductive heat transfer substantially throughout the time of burning of the fuel element.
Claim 2
Dependent Claim
64 words
A smoking article comprising: (a) a carbonaceous fuel element; (b) a physically separate aerosol generating means including a substrate bearing an aerosol forming material ; and (c) a mouthend piece; the fuel element and the substrate being arranged in a conductive heat exchange relationship such that the heat stable substrate receives conductive heat transfer substantially throughout the time of burning of the fuel element.
Claim 3
Dependent Claim
17 words
The article of claim 1, wherein the fuel element is less than about 30 mm in length.
Claim 4
Dependent Claim
56 words
An elongated smoking article comprising: (a) a combustible fuel element less than about 30 mm in length, and having a density of at least 0.5 g/cc.; (b) an aerosol generating means in conductive heat exchange relationship with the fuel element; and (c) means for delivering the aerosol produced by the aerosol generating means to the user.
Claim 5
Dependent Claim
56 words
An elongated smoking article comprising: (a) a combustible fuel element less than about 30 mm in length, and having a density of at least 0.5 g/cc.; (b) an aerosol generating means in conductive heat exchange relationship with the fuel element; and (c) means for delivering the aerosol produced by the aerosol generating means to the user.
Claim 6
Dependent Claim
35 words
An elongated smoking article comprising: (a) a fuel element; (b) a physically separate aerosol generating means including an aerosol forming material; and (c) an insulating member surrounding at least a portion of the fuel element.
Claim 7
Dependent Claim
35 words
An elongated smoking article comprising: (a) a fuel element; (b) a physically separate aerosol generating means including an aerosol forming material; and (c) an insulating member surrounding at least a portion of the fuel element.
Claim 8
Dependent Claim
21 words
The article of claim 4, wherein the fuel element and the aerosol generating means are in a conductive heat exchange relationship.
Claim 9
Dependent Claim
18 words
The article of claim 4 or 5, wherein the fuel element is less than 30 mm in length.
Claim 10
Dependent Claim
25 words
The article of claim 1, 2, 3 or 4 which produces wet total particulate matter having no mutagenic activity, as measured by the Ames test.
Claim 11
Dependent Claim
21 words
The article of claim 4, 5, 6 or 7, wherein the insulating member is resilient and at least 0.5 mm thick.
Claim 12
Dependent Claim
13 words
The article of claim 8, wherein the insulating member comprises a fibrous material.
Claim 13
Dependent Claim
22 words
The article of claim 4 or 5, wherein the insulating member further surrounds at least a portion of the aerosol generating means.
Claim 14
Dependent Claim
26 words
The article of claim 1, 3, 4, 5 or 8, wherein the fuel element is a carbonaceous material, and is less than 20 mm in length.
Claim 15
Dependent Claim
21 words
The article of claim 1, 3, 4, 5 or 8, wherein the fuel element is less than 15 mm in length.
Claim 16
Dependent Claim
17 words
The article of claim 11, wherein the fuel element has a plurality of longitudinally extending passages therethrough.
Claim 17
Dependent Claim
27 words
The article of claim 1, 2, 3, 4 or 8, further comprising a heat conducting member which contacts both the fuel element and the aerosol generator means.
Claim 18
Dependent Claim
12 words
The article of claim 14, wherein the heat conducting member is metallic.
Claim 19
Dependent Claim
29 words
The article of claim 15, wherein the metallic member is a metallic foil which encompasses at least a portion of both the fuel element and the aerosol generator means.
Claim 20
Dependent Claim
17 words
The article of claim 16, wherein the metallic member encloses a substrate bearing the aerosol forming material.
Claim 21
Dependent Claim
29 words
The article of claim 16, wherein the metallic member is a metallic rod embedded within at least a portion of both the fuel element and the aerosol generator means.
Claim 22
Dependent Claim
17 words
The article of claim 16, wherein the fuel element is less than about 15 mm in length.
Claim 23
Dependent Claim
26 words
The article of claim 1, 2, 3 or 4, wherein the aerosol generating means is at least partially contained within a cavity in the fuel element.
Claim 24
Dependent Claim
27 words
The article of claim 1, 2, 3 or 4, wherein the aerosol generating means comprises a porous, nonparticulate substrate, having a longitudinal passageway at least partially therethrough.
Claim 25
Dependent Claim
32 words
The article of claim 1, 2, 3 or 4, wherein the article delivers at least about 0.6 mg of wet total particulate matter in the first three puffs under FTC smoking conditions.
Claim 26
Dependent Claim
28 words
The article of claim 22, wherein the article delivers at least about 1.5 mg of wet total particulate matter in the first 3 puffs under FTC smoking conditions.
Claim 27
Dependent Claim
37 words
The article of claim 1, 2, 3 or 4, wherein the article delivers an average of at least about 0.8 mg per puff of wet total particulate matter under FTC smoking conditions, for at least 6 puffs.
Claim 28
Dependent Claim
28 words
The article of claim 1, 3 or 4, wherein the aerosol generating means contains a substrate loaded with from about 35 mg to 85 mg of aerosol former.
Claim 29
Dependent Claim
30 words
.,The article of claim 1, 3 or 4, wherein at least about 15 weight percent of the aerosol former is delivered as wet total particulate matter under FTC smoking conditions.
Claim 30
Dependent Claim
30 words
The article of claim 1, 3 or 4, further comprising a charge of tobacco located between the mouth end of the fuel element and the mouth end of the article.
Claim 31
Dependent Claim
20 words
The article of claim 1, 3 or 4, wherein the fuel element produces substantially no visible sidestream smoke during smolder.
Claim 32
Dependent Claim
17 words
The article of claim 3, 4, 5 or 8, wherein the fuel element comprises a carbon-containing material.
Claim 33
Dependent Claim
17 words
The article of claim 29, wherein the length of the fuel element is less than 20 mm.
Claim 34
Dependent Claim
17 words
The article of claim 29, wherein the length of the fuel element is less than 15 mm.
Claim 35
Dependent Claim
60 words
An elongated smoking article comprising: (a) a fuel element less than 30 mm in length; (b) a physically separate aerosol generating means including a carrier bearing an aerosol forming material ; (c) means for conducting heat from the fuel element to the aerosol generating means; and (d) an insulating member which surrounds at least a portion of the fuel element.
Claim 36
Dependent Claim
60 words
An elongated smoking article comprising: (a) a fuel element less than 30 mm in length; (b) a physically separate aerosol generating means including a carrier bearing an aerosol forming material ; (c) means for conducting heat from the fuel element to the aerosol generating means; and (d) an insulating member which surrounds at least a portion of the fuel element.
Claim 37
Dependent Claim
27 words
The smoking article of claim 32, wherein the heat conducting means comprises a heat conducting member which contacts both the fuel element and the aerosol generating means.
Claim 38
Dependent Claim
18 words
The article of claim 33, wherein the heat conducting member encloses the carrier for the aerosol forming material.
Claim 39
Dependent Claim
18 words
The article of claim 33, wherein the insulating member is resilient and is at least 0.5 mm thick.
Claim 40
Dependent Claim
13 words
The article of claim 32, wherein the fuel elment comprises a carbon-containing material.
Claim 41
Dependent Claim
16 words
The article of claim 36, wherein the fuel element is less than 15 mm in length.
Claim 42
Dependent Claim
15 words
The article of claim 32, 33, 34 or 35, wherein the fuel element is carbonaceous.
Claim 43
Dependent Claim
16 words
The article of claim 33, wherein the fuel element is less than 15 mm in length.
Claim 44
Dependent Claim
32 words
The article of claim 33, wherein the article delivers an average of at least 0.8 mg per puff of wet total particulate matter under FTC smoking conditions, for at least six puffs.
Claim 45
Dependent Claim
23 words
The article of claim 32 or 38, which produces wet total particulate matter having no mutagenic activity, as measured by the Ames test.
References Cited (Backward Citations)
No citation records indexed.
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