EP0337046A1
Expired / Lapsed
EP
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One-piece bottle top with deformable break-open seal
Assignee: Bormioli Metalplast SpA
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Filing: 1988-08-26
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Granted: —
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Expires: 2008-08-26
Abstract
Abstract The one-piece twist-off bottle top, used principally for fizzy or still soft drinks, has a deformable break-open seal (2) that features a succession of recesses (4) exhibiting an oblique pyramidal shape. When the top is fitted initially to the bottle, certain of the surfaces of these pyramids are urged gently outward so that the internal diameter of the seal can be enlarged; when the cap is first twisted off, other surfaces are designed to resist on coming up against an annular bead (9) offered by the neck of the bottle, in such a way that the cap and seal are forced to separate.
Inventors
- 👤 Emilio Morini
- 👤 Giovanni Celaschi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 19:49
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/34; B65D41/3404; B65D41/3409; B65D41/3442; B65D41/3447
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
96 words
1) A one-piece bottle top with a deformable break-open seal, comprising a screw cap (1), the bottom edge of which is connected by way of easily broken fillets (3) with an annular break-open seal (2), characterized in that the lateral surface of the annular seal appears as a plurality of recesses (4) each one of which exhibits the shape of an oblique pyramid, and in that the axis connecting the vertex of the pyramid to the centre of its base is angled in the direction of the join between the seal (2) and the cap (1).
Claim 2
Dependent Claim
96 words
1) A one-piece bottle top with a deformable break-open seal, comprising a screw cap (1), the bottom edge of which is connected by way of easily broken fillets (3) with an annular break-open seal (2), characterized in that the lateral surface of the annular seal appears as a plurality of recesses (4) each one of which exhibits the shape of an oblique pyramid, and in that the axis connecting the vertex of the pyramid to the centre of its base is angled in the direction of the join between the seal (2) and the cap (1).
Claim 3
Dependent Claim
68 words
2) A bottle top as in claim 1, wherein the oblique pyramid shape of the single recess (4) is generated from a rectangular base, and the face (6) issuing from the side of the base located uppermost and flanking the join between the seal (2) and the cap (1), is inclined at an angle of between 5° and 20° in relation to the base plane of the recess.
Claim 4
Dependent Claim
139 words
3) A bottle top as in claim 1, wherein: the oblique pyramid shape of the single recess (4) is generated from a rectangular base; the axis joining the vertex of the pyramid with the centre of its base is angled concurrently with the direction in which the cap is twisted off; the face (5) issuing from the side of the base aligned with the generator of the cap and located at rear, viewed in relation to the direction in which the cap is screwed on, lies substantially perpendicular to the base plane of the recess; and the face (6) issuing from the side of the base located uppermost and flanking the join between the seal (2) and the cap (1), is inclined at an angle of between 5° and 20° in relation to the base plane of the recess.
Claim 5
Dependent Claim
67 words
4) A bottle top as in claim 2 or 3, wherein the length of the two sides of the base of each recess (4) that lie concurrent with the generators of the cap is between 3 and 7mm, the length of the remaining sides is between 4 and 8mm, and the height of the pyramid through the perpendicular from base to vertex is between 0.1 and 2mm.
Claim 6
Dependent Claim
38 words
5) A bottle top as in claim 1, wherein the recesses (4) are distributed along the seal (2) spaced apart at regular intervals, and the distance between adjacent recesses is approximately equal to the thickness of the seal.
Claim 7
Dependent Claim
29 words
6) A bottle top as in claim 1, wherein the seal further comprises a plurality of notches (7) distributed circumferentially between the recesses (4) and the break-open fillets (3).
Claim 8
Dependent Claim
28 words
7) A bottle top as in claim 2, wherein each recess (4) exhibits a tongue (15) associated with vertex of the pyramid and extending inward from the seal.
References Cited (Backward Citations)
US3329295A
Cited
US4485934A
Cited
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