Patent US3939848A successfully refreshed from Google Patents.
US3939848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoking article
Assignee: Individual
•
Filing: 1975-01-16
•
Granted: 1976-02-24
•
Expires: 1995-01-16
Abstract
Abstract The smoking article disclosed includes a novel filter for removing a substantial portion of the potentially harmful tars, resins, nicotine, etc. from the tobacco smoke from the smoking article. The novel filter comprises an assemblage of crimped, cellulose acetate fibers and includes first and second zones having elongated, elliptical traverse crosssections and a transition zone therebetween. A portion of the fibers in the first zone and a portion of the fibers in the transition zone are orientated transversely to the longitudinal axis of the filter.
Inventors
- 👤 George Le Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:20
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
263 words
An improved smoking article comprising: a generally cylindrical, combustible first outer wrapper having first and second ends; an amount of tobacco disposed in and filling the first outer wrapper between its ends and adapted, with the first outer wrapper, to be burned; and filter means for filtering products of combustion which pass there through in a direction parallel to the longiudinal axis of the filter means and which result from the burning of the tobacco, the filter means comprising: one end that is connected with a first end of the first outer wrapper; another end that is adapted to be placed in the mouth of the smoker; a second outer wrapper; and an assembly of crimped, cellulose acetate fibers disposed in and filling the second outer wrapper; the filter means comprising: a first zone adjacent to the one end of the filter means and having an elongated, elliptical cross-section in a plane transverse to the longitudinal axis of the filter means; a second zone adjacent to the other end of the filter means and having an elongated, elliptical cross-section in a plane transverse to the longiudinal axis of the filter means, with the major axis of the transverse cross-section of the second zone being disposed at an angle of substantially ninety degrees to the major axis of the transverse cross-section of the first zone; and a third zone disposed between the first and second zones and having a varying, non-circular cross-section containing fibers transverse to the central longitudinal axis wherein said third zone provides a smooth transition between the first and second zones.
Claim 2
Dependent Claim
263 words
An improved smoking article comprising: a generally cylindrical, combustible first outer wrapper having first and second ends; an amount of tobacco disposed in and filling the first outer wrapper between its ends and adapted, with the first outer wrapper, to be burned; and filter means for filtering products of combustion which pass there through in a direction parallel to the longiudinal axis of the filter means and which result from the burning of the tobacco, the filter means comprising: one end that is connected with a first end of the first outer wrapper; another end that is adapted to be placed in the mouth of the smoker; a second outer wrapper; and an assembly of crimped, cellulose acetate fibers disposed in and filling the second outer wrapper; the filter means comprising: a first zone adjacent to the one end of the filter means and having an elongated, elliptical cross-section in a plane transverse to the longitudinal axis of the filter means; a second zone adjacent to the other end of the filter means and having an elongated, elliptical cross-section in a plane transverse to the longiudinal axis of the filter means, with the major axis of the transverse cross-section of the second zone being disposed at an angle of substantially ninety degrees to the major axis of the transverse cross-section of the first zone; and a third zone disposed between the first and second zones and having a varying, non-circular cross-section containing fibers transverse to the central longitudinal axis wherein said third zone provides a smooth transition between the first and second zones.
Claim 3
Dependent Claim
36 words
The improved smoking article described in claim 1 wherein the first filter zone comprise a plurality of sub-zones and the fibers in one said sub-zone are orientated transversely to the longitudinal axis of the filter means.
Claim 4
Dependent Claim
23 words
The improved smoking article described in claim 2 wherein said sub-zone is disposed adjacent to the first end of the first outer wrapper.
Claim 5
Dependent Claim
58 words
The improved smoking article described in claim 2 wherein the remaining fibers in the first and second filter zones are orientated generally parallel with respect to the longitudinal axis of the filter means; and wherein the fibers in said sub-zone in the first zone and in said portion of the third zone are orientated parallel to each other.
References Cited (Backward Citations)
DE1249139B
Cited
GB436019A
Cited
US2794480A
Cited
US2830593A
Cited
US3164157A
Cited
US3334636A
Cited
US3461880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |