Patent US4593707A successfully refreshed from Google Patents.
US4593707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variably ventilated filter cigarette
Assignee: Reemtsma Cigarettenfabriken GmbH
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Filing: 1985-06-14
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Granted: 1986-06-10
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Expires: 2005-06-14
Abstract
Abstract A variably ventilatable filter cigarette is provided with a filter body having a plurality of spaced circumferential, peripheral channels covered by a wrapping sheet at least a portion of which is air permeable, the wrapping sheet extending beyond the filter body to receive a cup-shaped member having an end wall with perforations alignable with the channels; the cup-shaped member is rotatable to vary the degree of registration with respect to the channels.
Inventors
- 👤 Henning Seidel
- 👤 Wolfgang Wildenau
- 👤 Joachim Mantke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:31
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/04; A24D3/041
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
195 words
A filter cigarette having a generally cylindrically shaped filter body at one end thereof having a substantially air impermeable sleeve surrounding said filter body, said filter body having an exterior surface and a plurality of channel means formed in said exterior surface with said channel means being circumferentially spaced apart, wrapping sheet means surrounding said filter body and having at least a portion thereof permeable to the air, each said channel means having a first end in communication with the air through a said portion of said wrapping sheet means and a second end disposed for flow communication with the mouth of the user, said wrapping sheet means including an end portion, a cup-shaped member rotatably disposed in said end portion, said cup-shaped member having an end wall having a plurality of circumferentially spaced openings and a central opening in flow communication with said filter body, said spaced openings being disposed radially outwardly of said central opening a distance such that said spaced openings can be moved into and out of registry with a selected second end of a respective said channel means upon rotation of said cup-shaped member relative to said wrapping sheet means.
Claim 2
Dependent Claim
195 words
A filter cigarette having a generally cylindrically shaped filter body at one end thereof having a substantially air impermeable sleeve surrounding said filter body, said filter body having an exterior surface and a plurality of channel means formed in said exterior surface with said channel means being circumferentially spaced apart, wrapping sheet means surrounding said filter body and having at least a portion thereof permeable to the air, each said channel means having a first end in communication with the air through a said portion of said wrapping sheet means and a second end disposed for flow communication with the mouth of the user, said wrapping sheet means including an end portion, a cup-shaped member rotatably disposed in said end portion, said cup-shaped member having an end wall having a plurality of circumferentially spaced openings and a central opening in flow communication with said filter body, said spaced openings being disposed radially outwardly of said central opening a distance such that said spaced openings can be moved into and out of registry with a selected second end of a respective said channel means upon rotation of said cup-shaped member relative to said wrapping sheet means.
Claim 3
Dependent Claim
55 words
The filter cigarette as claimed in claim 1 wherein said cup-shaped member has a circumferential side wall extending from said end wall with said side wall having an annular slot formed therein and on the exterior of said circumferential side wall, said end portion of said wrapping sheet means having means for engaging said slot.
Claim 4
Dependent Claim
20 words
The filter cigarette as claimed in claim 2 wherein said cup-shaped member is at least partially filled with filter material.
Claim 5
Dependent Claim
26 words
The filter cigarette as claimed in claim 1 wherein said central opening in said end wall of said cup-shaped member is connected with said spaced openings.
Claim 6
Dependent Claim
26 words
The filter cigarette as claimed in claim 1 wherein said cup-shaped member has a circumferential side wall having an extending portion extending beyond said wrapping sheet.
Claim 7
Dependent Claim
47 words
The filter cigarette as claimed in claim 5 wherein said extending portion is tubular and has a diameter slightly greater than the diameter of said cup-shaped member located within said wrapping sheet and an external diameter substantially equal to the external diameter of said wrapping sheet means.
Claim 8
Dependent Claim
26 words
The filter cigarette as claimed in claim 6 wherein said extending portion is covered by an additional wrapping sheet means separate from said wrapping sheet means.
Claim 9
Dependent Claim
27 words
The filter cigarette as claimed in claim 7 wherein said additional wrapping sheet means is connected to said wrapping sheet means by means of a breakable connection.
Claim 10
Dependent Claim
26 words
The filter cigarette as claimed in claim 5 wherein said extending portion is covered by an additional wrapping sheet means separate from said wrapping sheet means.
Claim 11
Dependent Claim
28 words
The filter cigarette as claimed in claim 9 wherein blocking means are provided for limiting relative rotational movement of said cup-shaped member relative to said wrapping sheet means.
Claim 12
Dependent Claim
62 words
The filter cigarette as claimed in claim 10 wherein said blocking means includes projection means on one of said wrapping sheet means and said cup-shaped member and a slot means on the other of said means and said member, said slot means having opposite ends engageable by said projection means for stopping relative rotation between said cup-shaped member and said sheet means.
Claim 13
Dependent Claim
22 words
The filter cigarette as claimed in claim 11 wherein said projection means are provided on the interior of said wrapping sheet means.
Claim 14
Dependent Claim
17 words
The filter cigarette as claimed in claim 12 wherein a plurality of said blocking means are provided.
Claim 15
Dependent Claim
35 words
The filter cigarette as claimed in claim 9 wherein said extending portion has an outer face carrying markings for indicating the position of said spaced openings of said cup-shaped member relative to said channel means.
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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) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |