US3933159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of mouthpiece cigarettes
Assignee: Mpac Group PLC
•
Filing: 1974-03-26
•
Granted: 1976-01-20
•
Expires: 1994-03-26
Abstract
Abstract Using a hot melt adhesive on the strip of material uniting a mouthpiece to a cigarette, and hardening the adhesive while the strip is rolled around the assemblage by heat lost to a surface along which the assemblage is rolled. The rolling takes place between a rolling plate and a drum which is heated to reactivate the adhesive prior to rolling.
Inventors
- 👤 Desmond Walter Molins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:19
CPC Classifications
A; A24; A24C; A24C5/00; A24C5/47; A24C5/471; A24C5/472
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
202 words
Apparatus for making mouthpiece cigarettes by uniting a length of mouthpiece material to each cigarette in abutting relationship thereto by means of an encircling uniting band, comprising a rotatable drum, means to apply molten hot melt adhesive to a continuous web of uniting band material, means to deliver the web onto the drum at a temperature slightly below the melting point of the adhesive and at a speed less than the peripheral speed of the drum, severing means to sequentially cut off the successive foremost ends of the web on the drum to form a succession of uniting bands spaced apart by a gap, heating means to apply sufficient heat to the drum to re-activate the adhesive on the uniting bands, a rolling member having a concave part-cylindrical surface spaced from the drum to define a rolling passage therebetween, and conveyor means to directly deliver cigarette assemblages each with an aligned and abutted mouthpiece portion to said passage in timed relationship with the leading end of a re-activated uniting band so that said re-activated band is rolled in said passage around the preceding assemblage, the temperature of the rolling member being low enough to cool the adhesive to cause it to set.
Claim 2
Dependent Claim
202 words
Apparatus for making mouthpiece cigarettes by uniting a length of mouthpiece material to each cigarette in abutting relationship thereto by means of an encircling uniting band, comprising a rotatable drum, means to apply molten hot melt adhesive to a continuous web of uniting band material, means to deliver the web onto the drum at a temperature slightly below the melting point of the adhesive and at a speed less than the peripheral speed of the drum, severing means to sequentially cut off the successive foremost ends of the web on the drum to form a succession of uniting bands spaced apart by a gap, heating means to apply sufficient heat to the drum to re-activate the adhesive on the uniting bands, a rolling member having a concave part-cylindrical surface spaced from the drum to define a rolling passage therebetween, and conveyor means to directly deliver cigarette assemblages each with an aligned and abutted mouthpiece portion to said passage in timed relationship with the leading end of a re-activated uniting band so that said re-activated band is rolled in said passage around the preceding assemblage, the temperature of the rolling member being low enough to cool the adhesive to cause it to set.
Claim 3
Dependent Claim
42 words
Apparatus as claimed in claim 1 wherein the means to deliver the web comprises means to space the adhesive applying means such a distance upstream of the drum that the molten adhesive is cooled below its melting point by natural heat loss.
Claim 4
Dependent Claim
21 words
Apparatus as claimed in claim 2 further comprising fan means to apply a forced flow of cooling air to the adhesive.
Claim 5
Dependent Claim
23 words
Apparatus as claimed in claim 1 wherein the rolling member is maintained at said low temperature by means for passing cooling fluid therethrough.
Claim 6
Dependent Claim
44 words
Apparatus as claimed in claim 1 wherein the conveyor means delivers each assemblage into the gap between two reactivated uniting bands, so that the assemblage is initially in front of said leading end of a reactivated uniting band which is to be rolled therearound.
References Cited (Backward Citations)
CA731964A
Cited
GB190006495A
Cited
US3094128A
Cited
US3420243A
Cited
US3470884A
Cited
US3526233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |