US3774622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device,particularly a cigarette,for smoking a cord of smokable material
Assignee: Individual
•
Filing: 1971-11-16
•
Granted: 1973-11-27
•
Expires: 1991-11-16
Abstract
Abstract A cigarette has at least one longitudinal secondary air channel which is sealed towards the suction end of the cigarette and is in communication with the ambient air via a connection separated from the suction path of the smoke.
Inventors
- 👤 K Steigerwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:42
CPC Classifications
A; A24; A24C; A24C1/00
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
233 words
A smokable article particularly a cigarette, comprising a cord of smokable material, particularly tobacco, said cord having a combustion end and a mouth end, and a wrapper surrounding the cord of smokable material and being adapted to be progressively destroyed from its combustion end in correspondence with the progress of a smoking process while the smoke flows through said cord toward said suction end, means defining at least one secondary air channel extending lengthwise of the cord over at least part of the cord length, said secondary air channel being closed at the end which is nearer to the mouth end and open towards the other end of the cord, said air channel being formed of a sealing wall means which seals said air channel at least partly at its circumference against the cord of smokable material, said sealing wall means being of a material which progressively loses its sealing properties under the influence of the combustion as the latter proceeds along the cord during the smoking process, connection means providing communication between said secondary air channel and the ambient air adjacent the end of the secondary air channel which is nearer to the mouth end of He cord, the connection means including at least one smoke impervious channel extending from said secondary air channel to the surrounding ambient air whereby said connection means is separated from the suction path for the smoke.
Claim 2
Dependent Claim
233 words
A smokable article particularly a cigarette, comprising a cord of smokable material, particularly tobacco, said cord having a combustion end and a mouth end, and a wrapper surrounding the cord of smokable material and being adapted to be progressively destroyed from its combustion end in correspondence with the progress of a smoking process while the smoke flows through said cord toward said suction end, means defining at least one secondary air channel extending lengthwise of the cord over at least part of the cord length, said secondary air channel being closed at the end which is nearer to the mouth end and open towards the other end of the cord, said air channel being formed of a sealing wall means which seals said air channel at least partly at its circumference against the cord of smokable material, said sealing wall means being of a material which progressively loses its sealing properties under the influence of the combustion as the latter proceeds along the cord during the smoking process, connection means providing communication between said secondary air channel and the ambient air adjacent the end of the secondary air channel which is nearer to the mouth end of He cord, the connection means including at least one smoke impervious channel extending from said secondary air channel to the surrounding ambient air whereby said connection means is separated from the suction path for the smoke.
Claim 3
Dependent Claim
35 words
The device according to claim 1, characterized in that the connection means to the ambient air is provided in the form of at least one transverse channel extending transversely of the axis of the cord.
Claim 4
Dependent Claim
19 words
A device in accordance with claim 1, characterized in that the ambient air connection means comprises adjustable restriction means.
Claim 5
Dependent Claim
54 words
A device in accordance with claim 3, characterized by the restriction means comprising a sleeve arranged over the outer end of the ambient air connection means, said sleeve being movable relative to the cord and comprising through-going passages adapted to be brought into registry with the outer end of the ambient air connection means.
Claim 6
Dependent Claim
56 words
A device in accordance with claim 1, characterized in that the ambient air connection means is provided in a connector body adjoining the mouth end of the cord, the ambient air connection means further comprising an end fitting adapted to enter into communication with the secondary air channel upon assembling the cord with the connector body.
Claim 7
Dependent Claim
16 words
The device according to claim 5, characterized in that the connector body comprises a smoke filter.
Claim 8
Dependent Claim
40 words
A device in accordance with claim 1, characterized in that a supporting material is provided within the secondary air channel, the supporting material being selected to offer a flow resistance which is small relative to that of the cord material.
Claim 9
Dependent Claim
16 words
The device according to claim 9, characterized in that the supporting material is a smokable material.
Claim 10
Dependent Claim
42 words
The device according to claim 8, characterized in that the supporting material is selected to lose its coherence in a predetermined temperature range between room temperature and the temperatures which exist in the combustion zone of the cord during the smoking process.
Claim 11
Dependent Claim
33 words
The device in accordance with claim 1, characterized by the sealing wall means comprising a layer of heat sensitive material which is combustible, the layer forming a border of the secondary air channel.
Claim 12
Dependent Claim
20 words
The device according to claim 10, characterized in that the layer bordering the secondary air channel is a sheet-like sleeve.
Claim 13
Dependent Claim
16 words
The device according to claim 11, characterized in that the sheet-like sleeve consists of smokable material.
Claim 14
Dependent Claim
35 words
A device according to claim 10, characterized in that the sealing wall means includes passages, said passages being provided with closure means adapted to open said passages at least partly, under the influence of heat.
Claim 15
Dependent Claim
77 words
The device according to claim 13, characterized in that the layer bordering the secondary air channel consists of a material at least partly of two plies of different thermal expansion characteristics, and in that the passages and their closure means are provided in the form of flap-like cuts which open themselves due to deformation of the layer upon approach of the combustion zone as the latter proceeds along the cord in the course of the smoking process.
Claim 16
Dependent Claim
42 words
A device in accordance with claim 13, characterized by the closure means comprising a closure material selected to lose its coherence in a predetermined temperature range between room temperature and the temperatures existing in the combustion zone during smoking of the cord.
Claim 17
Dependent Claim
16 words
The device according to claim 15, characterized in that the closure material substantially fills the passages.
Claim 18
Dependent Claim
29 words
A device in accordance with claim 1, characterized in that transversely extending additional channels are provided in at least part of the cord zones adjacent the secondary air channel.
Claim 19
Dependent Claim
19 words
The device according to claim 17, characterized in that the additional channels extend laterally from the secondary air channel.
Claim 20
Dependent Claim
19 words
The device according to claim 18, characterized in that the additional channels are separated from the secondary air channel.
Claim 21
Dependent Claim
15 words
The device according to claim 18, characterized in that the additional channels have pervious walls.
Claim 22
Dependent Claim
35 words
A device in accordance with claim 1, characterized in that the diameter of the secondary air channel is enlarged toward the mouth end of the cord in correspondence with the desired supply of secondary air.
Claim 23
Dependent Claim
21 words
A device in accordance with claim 1, characterized in that said secondary channel extends substantially along the axis of the cord.
Claim 24
Dependent Claim
23 words
A device in accordance with claim 1, characterized in that a plurality of secondary channels are distributed throughout the cross-section of the cord.
Claim 25
Dependent Claim
31 words
A device in accordance with claim 1, characterized in that at least one secondary air channel is provided in the zone of the cord adjacent the outer circumference of the cord.
Claim 26
Dependent Claim
30 words
The device according to claim 24, characterized in that a plurality of secondary air channels are distributed in the zone of the cord adjacent the outer circumference of the cord.
Claim 27
Dependent Claim
27 words
A device in accordance with claim 24, characterized in that the outer secondary air channel comprises perforation openings, distributed over the length of the secondary air channel.
Claim 28
Dependent Claim
17 words
A device in accordance with claim 1, characterized by an annular secondary air channel surrounding the cord.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |