US3905377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cigarette having a blind conduit
Assignee: Individual
•
Filing: 1973-12-10
•
Granted: 1975-09-16
•
Expires: 1993-12-10
Abstract
Abstract The invention relates to a cigarette, a cigar, a pipe or a plug of tobacco for pipes, comprising an internal fresh air admission conduit and means for causing said fresh air to pass through the shredded tobacco, thereby enabling the toxicity of the smoke to be reduced by increasing the condensation of the toxic vapors and increasing the quantity of external fresh air drawn-in. According to the invention, these means take the form of a fluid-tight bottom wall arranged in the air-admission conduit so as to form a deflection screen for the fresh air. The fluid-tight bottom wall is placed close to the suction extremity.
Inventors
- 👤 George Alexandre Yatrides
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:55
CPC Classifications
A; A24; A24F; A24F1/00; A24F1/02; A24D; A24D1/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
141 words
In a cigarette or the like comprising an elongated body of tobacco laterally encircled by a wrapper, said cigarette having an end to be lit and a suction end; the improvement in which the body of tobacco has an air-permeable duct extending longitudinally thereof from said lit end and terminating at a distance from said suction end in a fluid-impervious end wall that occupies only a central portion of said body of tobacco and that is spaced inwardly from said wrapper, said end wall defining between itself and said wrapper an annulus filled entirely with tobacco, the tobacco of said body extending a substantial distance on the side of said end wall which is opposite said duct, the side walls of said duct being airpermeable, said end wall having a diameter about the same as the internal diameter of said duct.
Claim 2
Dependent Claim
141 words
In a cigarette or the like comprising an elongated body of tobacco laterally encircled by a wrapper, said cigarette having an end to be lit and a suction end; the improvement in which the body of tobacco has an air-permeable duct extending longitudinally thereof from said lit end and terminating at a distance from said suction end in a fluid-impervious end wall that occupies only a central portion of said body of tobacco and that is spaced inwardly from said wrapper, said end wall defining between itself and said wrapper an annulus filled entirely with tobacco, the tobacco of said body extending a substantial distance on the side of said end wall which is opposite said duct, the side walls of said duct being airpermeable, said end wall having a diameter about the same as the internal diameter of said duct.
Claim 3
Dependent Claim
22 words
A cigarette or the like as claimed in claim 1, said duct being empty and being bounded by said body of tobacco.
Claim 4
Dependent Claim
22 words
A cigarette or the like as claimed in claim 1, in which said duct is bounded by a sheath of perforate material.
Claim 5
Dependent Claim
22 words
A cigarette or the like as claimed in claim 1, in which said duct is bounded by a sheath of fluid-permeable material.
Claim 6
Dependent Claim
23 words
a cigarette or the like as claimed in claim 1, in which said duct is bounded by a wall of perforate combustible material.
Claim 7
Dependent Claim
37 words
A cigarette or the like as claimed in claim 1, and a filter between said end wall and said suction end, said filter being spaced from said end wall by a portion of said body of tobacco.
Claim 8
Dependent Claim
25 words
A cigarette or the like as claimed in claim 1, said duct having an internal diameter from one-eighth to one-half the diameter of the cigarette.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |