US3736940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cigarette with ash-retaining means
Assignee: Individual
•
Filing: 1971-06-24
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Granted: 1973-06-05
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Expires: 1991-06-24
Abstract
Abstract A cigarette comprises a tubular envelope of paper impregnated with a network of intersecting narrow bands of a non-combustible material defining an array of paper areas. The paper with the impregnated network is shrunk relative to the paper areas which bulge outwardly. Upon combustion, the non-combustible material vitrifies and welds the intersections of the network lines to form a rigid network armature for supporting cigarette ash.
Inventors
- 👤 Pastou J Saint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:58
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/02; D21H23/22; D21H23/52; D21H23/56; D21H23/58; A; A24; A24D; A24D1/00; A24D1/12; D21H5/00; D21H5/0005; D21H5/0025; D21H5/003; D21H5/0032; D21H5/12; D21H5/14; D21H5/16
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
137 words
In a cigarette comprising a combustible paper in tubular configuration and means for supporting cigarette ash as said paper is consumed, the improvement in which said supporting means before combustion comprises a tubular network of intersecting narrow bands of non-combustible material impregnated in said paper, said network defining an array of paper areas free of said non-combustible material, the paper impregnated with said network of non-combustible material being shrunk relative to the paper in said areas so that each paper area bulges outwardly from said tubular network, said network of intersecting narrow bands comprising a relatively greater amount of non-combustible material at the intersections of said bands to thereby reinforce said network, said paper having overlapping marginal edges extending longitudinally of said cigarette, and said network narrow bands overlapping on areas thereof along said overlapping marginal areas.
Claim 2
Dependent Claim
137 words
In a cigarette comprising a combustible paper in tubular configuration and means for supporting cigarette ash as said paper is consumed, the improvement in which said supporting means before combustion comprises a tubular network of intersecting narrow bands of non-combustible material impregnated in said paper, said network defining an array of paper areas free of said non-combustible material, the paper impregnated with said network of non-combustible material being shrunk relative to the paper in said areas so that each paper area bulges outwardly from said tubular network, said network of intersecting narrow bands comprising a relatively greater amount of non-combustible material at the intersections of said bands to thereby reinforce said network, said paper having overlapping marginal edges extending longitudinally of said cigarette, and said network narrow bands overlapping on areas thereof along said overlapping marginal areas.
Claim 3
Dependent Claim
41 words
A cigarette according to claim 1, in which said network comprises a plurality of equally spaced rectilinear first narrow bands disposed parallel to the longitudinal axis of said cylinder, two of said first narrow bands substantially overlapping in said marginal areas.
Claim 4
Dependent Claim
36 words
A cigarette according to claim 2, in which said network comprises a plurality of equally spaced rectilinear second narrow bands disposed perpendicularly to said first bands, each second band having overlapping ends in said marginal areas.
Claim 5
Dependent Claim
27 words
A cigarette according to claim 2, in which said network comprises a plurality of equally spaced wavy second narrow bands disposed transversally of said first narrow bands.
Claim 6
Dependent Claim
49 words
A cigarette according to claim 1, in which said non-combustible material comprises a component capable of vitrifying upon combustion of the cigarette whereby said network narrow bands become welded together at their points of intersection and areas of overlapping, and form a reinforced network armature for supporting cigarette ash.
Claim 7
Dependent Claim
34 words
A cigarette according to claim 5, in which said non-combustible material comprises a material shrinkable during combustion of the cigarette whereby said network armature is shrunk relative to the original network during said combustion.
References Cited (Backward Citations)
GB190122161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |