US3669805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for folding onto,and joining with,one another two side edge portions of a heat sealing foil
Assignee: Arenco AB
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Filing: 1969-11-19
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Granted: 1972-06-13
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Expires: 1989-11-19
Abstract
Abstract An apparatus for folding over and joining together the opposite flaps of a heat sealable foil wrapped around three sides of a cigarette pack. At the folding and sealing station a first shoe is moved across the fourth side of the pack to fold down the first flap. As this shoe is retracted a freely rotatable heated cylindrical roller is pivotally swept across the fourth side from the opposite direction, simultaneously folding the second flap over the first one and heat sealing the two flaps together.
Inventors
- 👤 Sverre Engvoll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:25
CPC Classifications
B; B65; B65B; B65B49/00; B65B49/12; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1744; Y10T156/1768; Y10T156/1771
Claims Analysis
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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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |