Patent US3216320A successfully refreshed from Google Patents.
Patent US4126263A successfully refreshed from Google Patents.
US4126263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing container provided with opening arrangement
Assignee: Tetra Pak AB
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Filing: 1977-06-21
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Granted: 1978-11-21
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Expires: 1997-06-21
Abstract
Abstract An opening arrangement for packing containers made from laminated layers of plastic and paper in which a rectangular part of the top wall and an adjacent side wall is completely removable. A rectangular cover strip is sealed along its border portions to the inside of the top wall and adjacent side wall outside of the border portions of the removable rectangular part, and is also sealed to the removable rectangular part within its border portions at two spaced apart areas, which, when removed with the rectangular part, establish a pour opening having one edge coincident with an edge line formed between the top and side walls, and a vent opening. The cover strip is also provided with a folded portion projecting outwardly from this edge which forms a ledge over which the liquid goods within the container can flow so as to form a uniform and well defined jet.
Inventors
- 👤 Kjell H. Martensson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:05
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/70; B65D5/708; B65D5/02; B65D5/06; B65D5/064; B65D5/065
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
A packing container having a wall provided with an opening arrangement comprising a perforated portion in the wall of the packing container which is operable to be lifted so as to free an opening in the container wall, a cover strip attached to the inside of the packing container, fully covering the said perforated portion, sealed to the inside of the packing container around the said opening, and sealed to the inside of the portion of the packing container wall that can be lifted, so that a fusing together of material between parts of the cover strip and parts of the said portion is brought about wherein said cover strip has a sealed-up fold along a side of the cover strip which faces towards said opening, the fold extending over the whole width of the opening and constructed to rise from the container wall when exposed.
Claim 2
Dependent Claim
146 words
A packing container having a wall provided with an opening arrangement comprising a perforated portion in the wall of the packing container which is operable to be lifted so as to free an opening in the container wall, a cover strip attached to the inside of the packing container, fully covering the said perforated portion, sealed to the inside of the packing container around the said opening, and sealed to the inside of the portion of the packing container wall that can be lifted, so that a fusing together of material between parts of the cover strip and parts of the said portion is brought about wherein said cover strip has a sealed-up fold along a side of the cover strip which faces towards said opening, the fold extending over the whole width of the opening and constructed to rise from the container wall when exposed.
Claim 3
Dependent Claim
57 words
A packing container in accordance with claim 1, wherein said fold on the cover strip has two incisions which extend from the top of the fold near to a base line of the sealed-up fold, said incisions being limited to those parts of the said fold which are sealed up between the cover strip and the container.
Claim 4
Dependent Claim
23 words
An opening arrangement in accordance with claim 1, wherein said fold has a base line located along an edge of the packing container.
Claim 5
Dependent Claim
64 words
An opening arrangement in accordance with claim 1, wherein said fold is unattached to the cover strip and to the inside of the packing container wall, and wherein the fold has such elasticity that it will rise from the surface of the cover strip when the perforated portion of the packing container wall is lifted in connection with the opening of the packing container.
Claim 6
Dependent Claim
60 words
An opening arrangement in accordance with claim 1, wherein the cover strip is sealed to the perforated portion in two areas, one of which is smaller than the other, and wherein said areas are arranged to be ripped up so as to expose the inside of the packing container when the perforated portion of the packing container wall is lifted.
References Cited (Backward Citations)
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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) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |