Patent US3583406A successfully refreshed from Google Patents.
US3583406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of a filter cigarette
Assignee: Brown and Williamson Holdings Inc
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Filing: 1969-08-28
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Granted: 1971-06-08
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Expires: 1989-08-28
Abstract
Abstract A filter cigarette having a substantially uniform crosssectional form defined by two mirror image arcs joined at their extremities is shaped from a conventional cylindrical filter cigarette by so compressing the latter as to crease two opposite sides of the cigarette, and apparatus for doing this includes elongated trough-shaped dies spaced from one another and serving as shaping supports for travelling belts between which the conventional cylindrical cigarettes are fed for progressive compression as they move along the length of the dies.
Inventors
- 👤 Raymond G Soyars
- 👤 James E Mann
- 👤 Charlie T Beddow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:31
CPC Classifications
A; A24; A24C; A24C5/00; A24C5/60; A24C5/605
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
132 words
The method of making a filter cigarette composed of a tobacco portion and a tow filter portion, the cross-sectional form of the tobacco and filter portions being defined by two mirror image arcs joined at their extremities, said method comprising a. forming a cylindrical tobacco portion by enclosing tobacco in a wrapper, b. forming a filter portion by enclosing a cylindrical mass of cellulosic filament tow in a wrapper while an adhesive is interposed therebetween to effect adhesion of the peripheral portion of the tow to the inner surface of its wrapper, c. joining the cylindrical tobacco and filter portions with another wrapper, and d. compressing the resulting cylindrical filter cigarette sufficiently at diametrically opposite sides of the cigarette as to form diametrically opposite creases extending the full length of the cigarEtte.
Claim 2
Independent Claim
132 words
The method of making a filter cigarette composed of a tobacco portion and a tow filter portion, the cross-sectional form of the tobacco and filter portions being defined by two mirror image arcs joined at their extremities, said method comprising a. forming a cylindrical tobacco portion by enclosing tobacco in a wrapper, b. forming a filter portion by enclosing a cylindrical mass of cellulosic filament tow in a wrapper while an adhesive is interposed therebetween to effect adhesion of the peripheral portion of the tow to the inner surface of its wrapper, c. joining the cylindrical tobacco and filter portions with another wrapper, and d. compressing the resulting cylindrical filter cigarette sufficiently at diametrically opposite sides of the cigarette as to form diametrically opposite creases extending the full length of the cigarEtte.
Claim 3
Dependent Claim
38 words
The method according to claim 1 in which the entire cigarette, prior to being compressed to crease its opposite sides, is laterally compressed to an extent greater than that to which it is compressed in the edge-creasing compression.
Claim 4
Dependent Claim
34 words
The method according to claim 1 in which the compression is effected by moving the cigarette longitudinally between opposing concave surfaces which are progressively closer together in the direction of movement of the cigarette.
Claim 5
Dependent Claim
41 words
The method according to claim 1 in which the compression is effected by moving the cigarette longitudinally between opposing concave surfaces which are progressively closer together in the direction of movement of the cigarette while applying heat to the moving cigarette.
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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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |