US3650458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Opening arrangement on packages
Assignee: Tetra Pak AB
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Filing: 1970-10-20
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Granted: 1972-03-21
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Expires: 1990-10-20
Abstract
Abstract The invention relates to an opening arrangement on a package consisting of a tube sealed at its ends and preferably of parallelepiped shape with double-walled triangular flaps which project from the ends of the package and are folded in against its walls, one of the flaps forming part of an opening arrangement and exhibiting a sealing strip which extends onto the top end wall of the package and which is intended to cover a discharge opening. The discharge opening is a slot formed in the upper end wall of the package which slots extends beyond the end edge of the package which adjoins the said flap, and provides a pouring edge which is constituted by an edge of the package.
Inventors
- 👤 Hans Anders Rausing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:49
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/02; B65D5/06; B65D5/064; B65D5/065; B65D5/42; B65D5/70; B65D5/708
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
179 words
Opening arrangement on a package consisting of a tube sealed at its ends and preferably of parallelepiped shape with doublewalled triangular flaps 5 made in the course of the sealing operation which project from the ends of the package and are folded in against its walls, whereby one of the flaps which is folded in against a side wall 2 is to form part of the opening arrangement and exhibits a sealing strip 10 which extends onto the top end wall 3 of the package and which is intended to cover a discharge opening 8, characterized by the discharge opening being a slot formed in the upper end wall of the package which slot extends beyond the end edge 6 of the package which adjoins the said flap, whereby the package exhibits a pouring edge 7 which is constituted by the edge of the package, formed by folding, which is uncovered in the slot and is situated between the bottom wall of the flap and the side wall of the paCkage against which the said flap is folded in.
Claim 2
Dependent Claim
179 words
Opening arrangement on a package consisting of a tube sealed at its ends and preferably of parallelepiped shape with doublewalled triangular flaps 5 made in the course of the sealing operation which project from the ends of the package and are folded in against its walls, whereby one of the flaps which is folded in against a side wall 2 is to form part of the opening arrangement and exhibits a sealing strip 10 which extends onto the top end wall 3 of the package and which is intended to cover a discharge opening 8, characterized by the discharge opening being a slot formed in the upper end wall of the package which slot extends beyond the end edge 6 of the package which adjoins the said flap, whereby the package exhibits a pouring edge 7 which is constituted by the edge of the package, formed by folding, which is uncovered in the slot and is situated between the bottom wall of the flap and the side wall of the paCkage against which the said flap is folded in.
Claim 3
Dependent Claim
24 words
Opening arrangement in accordance with patent claim No. 1, wherein the slot 8 extends only a short distance beyond the said end edge 6.
Claim 4
Dependent Claim
34 words
Opening arrangement in accordance with patent claim No. 1, wherein the end 9 of the portion of the slot 8 which extends beyond the said end edge 6 is parallel to the end edge.
Claim 5
Dependent Claim
63 words
Opening arrangement in accordance with patent claim No. 1, wherein the wall surfaces in the said one double-walled flap 5 which are turned towards one another are made to adhere to one another in at least a zone 14 at the end 9 of the slot 8 formed, whereby the extent of the zone is not less than the width of the slot.
Claim 6
Dependent Claim
42 words
Opening arrangement in accordance with patent claim No. 1, wherein the wall surfaces in the said one double-walled flap 5, which are turned towards one another are made to adhere to one another, in at least a zone around the slot formed.
Claim 7
Dependent Claim
66 words
Opening arrangement in accordance with patent claim No. 1, wherein the wall surfaces in the said one double-walled flap 5 which are turned towards one another are made to adhere to one another, at least along a zone parallel to the said end edge 6 and extending over the width of the flap, which zone is situated adjacent to the end 9 of the slot formed.
Claim 8
Dependent Claim
28 words
Opening arrangement in accordance with claim 4 in which adhesion between the wall surfaces is brought about by a seal accomplished by the application of heat and pressure.
Claim 9
Dependent Claim
26 words
Opening arrangement in accordance with patent claim No. 1, wherein the sealing strip 10 is sealed to the package in an area around the slot 8.
Claim 10
Dependent Claim
31 words
Opening arrangement in accordance with patent claim No. 1, wherein a thermoplastic film lines the package and the sealing strip 10 is sealed to said thermoplastic film covering the slot 8.
Claim 11
Dependent Claim
41 words
Opening arrangement in accordance with patent claim No. 1, in which the slot 8 is rectangular and extends generally parallel to a fin 4 formed in the course of sealing the tube and folded down against the said end wall 3.
References Cited (Backward Citations)
US2725173A
Cited
US2896839A
Cited
US3053385A
Cited
US3347444A
Cited
US3416716A
Cited
US3379360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |