US4798296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing container provided with a reclosable opening arrangement
Assignee: Tetra Pak AB
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Filing: 1987-03-18
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Granted: 1989-01-17
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Expires: 2007-03-18
Abstract
Abstract A packing container is provided with an opening arrangement which comprises a hole (9) included in the container wall (7) and weakened areas designed and located so that the wall section between the weakened areas forms a tongue (10) projecting into the hole (9). The hole is closed by a cover strip (11) fitted over the hole and sealed to the container wall.
Inventors
- 👤 Jan Lagerstedt
- 👤 Kjell Martensson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:08
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/02; B65D5/06; B65D5/064; B65D5/065
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
132 words
An opening arrangement in a packing container wall comprising: a weakened area formed by two connected lines of weakening, said weakened area defining a tongue movable away from the packing container wall during an opening operation to at least partially define the area of an opening in the packing container wall and movable toward the packing container wall during a re-closing operation to at least partially reclose the opening, and a cover strip positioned over said tongue and sealed to the packing container wall around the weakened area, the area of the opening being covered from the underside with a thin liquid-tight plastic film which is sealed to the inside of the container, the cover strip being sealed to the plastic film within an area of the opening adjacent said weakened area.
Claim 2
Dependent Claim
132 words
An opening arrangement in a packing container wall comprising: a weakened area formed by two connected lines of weakening, said weakened area defining a tongue movable away from the packing container wall during an opening operation to at least partially define the area of an opening in the packing container wall and movable toward the packing container wall during a re-closing operation to at least partially reclose the opening, and a cover strip positioned over said tongue and sealed to the packing container wall around the weakened area, the area of the opening being covered from the underside with a thin liquid-tight plastic film which is sealed to the inside of the container, the cover strip being sealed to the plastic film within an area of the opening adjacent said weakened area.
Claim 3
Dependent Claim
42 words
The packing container in accordance with claim 1, wherein the seal between the cover strip and the packing container wall is extra strong, or comprises a larger surface, within the area of the tongue as compared to the area surrounding the tongue.
Claim 4
Dependent Claim
16 words
The packing container in accordance with claim 1, wherein the cover strip has a free pull-tab.
Claim 5
Dependent Claim
37 words
The packing container in accordance with claim 1, wherein the weakened area consists of perforations in the packing container wall which are wholly covered from underneath by the plastic film sealed to the inside of the container.
Claim 6
Dependent Claim
46 words
The packing container in accordance with claim 4, wherein said perforations consist of holes or slots recurring at regular intervals along two parallel straight lines, the ends of both of which are connected to each other by a hole partially defining the area of said opening.
Claim 7
Dependent Claim
44 words
The packing container in accordance with claim 4, wherein said weakened area consists of two straight parallel cut lines arranged in the package wall, the ends of which are directly connected to each other by a hole partially defining the area of said opening.
Claim 8
Dependent Claim
49 words
The packing container in accordance with claim 4, wherein said perforation lines include ends remote from the hole which are joined to each other through a crease line arranged in the package wall for facilitating the folding up of the tongue of the wall formed between the perforation lines.
Claim 9
Dependent Claim
50 words
The packing container in accordance with claim 6, wherein said parallel cut lines include ends remote from the hole which are joined to each other through a crease line arranged in the package wall for facilitating the folding up of the tongue of the wall formed between the cut lines.
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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) | 1992-01-17 | 1992-07-18 | 1993-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-17 | 1996-07-18 | 1997-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-17 | 2000-07-18 | 2001-01-17 | $7700.00 | Window Closed / Lapsed |