Patent US4312450A successfully refreshed from Google Patents.
US4312450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Opening means for packaging containers
Assignee: Tetra Pak Developpement SA
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Filing: 1978-02-14
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Granted: 1982-01-26
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Expires: 1998-02-14
Abstract
Abstract A dispensing container includes a pouring aperture in its upper wall near a fold line which lies between it and the adjacent side wall. The side wall includes a cut line which forms a flap hinged along the above-mentioned fold line. A layer of plastic material extends across the pouring opening and hinged flap for sealing the container until the contents are to be used. When the plastic material is removed, the pouring aperture is opened and the hinged flap folds out of the plane of the side wall to form a pouring lip which directs the flow of contents away from the side wall.
Inventors
- 👤 Wilhelm Reil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:57
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/70; B65D5/708
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
210 words
In a container made from folded flexible material, and intended to package pourable products, the container having a top wall (1) and at least one side wall (2) connected to the top wall along a fold line (9), a pouring opening (6) in the top wall adjacent the one side wall, and a cover strip (7) attached to the top wall on the opposite side of the opening from the fold line, the cover strip extending across the opening toward the fold line when in position to cover the opening; the improvement comprising a slot (18) formed in said one side wall spaced from said fold line and terminating at its opposite edges (19) at said fold line defining a pouring edge member (8) movable from a first position extending along said one side wall to a pouring position extending approximately in the plane of said top wall and outwardly from said fold line, said cover strip projecting across said fold line and over said pouring edge member holding the pouring edge member in its first position until said cover strip is moved to uncover the pouring opening, and a fluid-tight layer (15) is sealed to the interior of said top wall and said one side wall covering said slot.
Claim 2
Dependent Claim
210 words
In a container made from folded flexible material, and intended to package pourable products, the container having a top wall (1) and at least one side wall (2) connected to the top wall along a fold line (9), a pouring opening (6) in the top wall adjacent the one side wall, and a cover strip (7) attached to the top wall on the opposite side of the opening from the fold line, the cover strip extending across the opening toward the fold line when in position to cover the opening; the improvement comprising a slot (18) formed in said one side wall spaced from said fold line and terminating at its opposite edges (19) at said fold line defining a pouring edge member (8) movable from a first position extending along said one side wall to a pouring position extending approximately in the plane of said top wall and outwardly from said fold line, said cover strip projecting across said fold line and over said pouring edge member holding the pouring edge member in its first position until said cover strip is moved to uncover the pouring opening, and a fluid-tight layer (15) is sealed to the interior of said top wall and said one side wall covering said slot.
Claim 3
Dependent Claim
48 words
A container as defined in claim 1, wherein said layer extends across said pouring opening, the portion of said layer covering said pouring opening being fastened to said cover strip and being severable from the remainder of said layer when said strip is moved to uncover said opening.
Claim 4
Dependent Claim
30 words
A container as defined in claims 1, or 2, wherein the majority of said slot (18) is parallel to said fold line and spaced therefrom between 1 to 5 mm.
Claim 5
Dependent Claim
42 words
A container as defined in claims 1, or 2, wherein at least a portion of said pouring member is releasably attached to said cover strip to cause the pouring member to move to its pouring position as the cover strip is opened.
Claim 6
Dependent Claim
44 words
A container as defined in claims 1, or 2, where in the material of the container and the crease of the fold line are such that said pouring member is urged into its pouring position once it is released by opening said cover strip.
Claim 7
Dependent Claim
33 words
A container as defined in claim 1, or 2, wherein said cover strip is a part separate from the container material, and said cover strip is releasably attached (13) to said side wall.
References Cited (Backward Citations)
US3127082A
Cited
US2731188A
Cited
GB1061509A
Cited
US3580478A
Cited
US3883034A
Cited
US3977591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-25 | 1985-07-27 | 1986-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-25 | 1989-07-27 | 1990-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-25 | 1993-07-27 | 1994-01-26 | $7700.00 | Window Closed / Lapsed |