EP0213742A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Tamper indicating closure member for containers
Assignee: ACI Australia Ltd
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Filing: 1986-07-29
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Granted: —
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Expires: 2006-07-29
Abstract
Abstract A closure member for a container includes a cap member (12) with a skirt wall (18) having an internally threaded portion (20) for engagement with a neck (22) of a container (24). An annular flap (34) is joined to a band portion (14) of the cap member and abuts against a shoulder (40) of the container neck and resists unscrewing of the cap member when so fitted. The band portion (14) is interconnected with the main body of the cap member (12) by frangible link means (32), the link means resisting unscrewing of the cap member until they are severed, such severing being visible when the cap member is returned to the container neck. Centralising means in the form of lugs (42) on the band portion (14) coact with an axially inclined ramp surface (36) to ensure that the closure once fully applied to the container is centrally located on the container neck and substantially prevent transverse movement of the band portion (14) relative to the container neck.
Inventors
- 👤 Rodney John Granat
- 👤 Roger William Clark
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 22:14
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/34; B65D41/3423; B65D41/3428; B65D41/3433
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
168 words
A closure for a container, the closure member having a cap member defining a top wall and a depending peripheral skirt integral with the top wall; an axially spaced, separable band portion interconnected by at least one frangible bridge element to an edge of the skirt remote from the top wall and integrally formed on said band portion a locating member adapted to be received behind a shoulder defined by the container neck; the band portion having centralizing means provided on its inner surface, at circumferentially spaced locations around that surface, the centralizing means being adapted to coact with an axially inclined ramp surface defined by a circumferential bead provided on the neck of the container such that notwithstanding variations in neck diameter within normal tolerances, the closure once fully applied to the container is centrally located on the container neck with the centralizing means contacting or being closely adjacent the bead and thereby substantially preventing transverse movement of the closure band portion relative to the container neck.
Claim 2
Dependent Claim
168 words
A closure for a container, the closure member having a cap member defining a top wall and a depending peripheral skirt integral with the top wall; an axially spaced, separable band portion interconnected by at least one frangible bridge element to an edge of the skirt remote from the top wall and integrally formed on said band portion a locating member adapted to be received behind a shoulder defined by the container neck; the band portion having centralizing means provided on its inner surface, at circumferentially spaced locations around that surface, the centralizing means being adapted to coact with an axially inclined ramp surface defined by a circumferential bead provided on the neck of the container such that notwithstanding variations in neck diameter within normal tolerances, the closure once fully applied to the container is centrally located on the container neck with the centralizing means contacting or being closely adjacent the bead and thereby substantially preventing transverse movement of the closure band portion relative to the container neck.
Claim 3
Dependent Claim
22 words
A closure member according to claim 1, wherein said centralizing means comprises a plurality of lugs spaced circumferentially around said inner surface.
Claim 4
Dependent Claim
23 words
A closure member according to claim 2, wherein there are from six to fourteen said lugs substantially uniformly spaced around said inner surface.
Claim 5
Dependent Claim
48 words
A closure member according to claim 2 or claim 3, wherein said lugs extend axially from an edge of the band portion adjacent which the at least one bridge element is connected to the band portion, said lugs terminating short of the other edge of the band portion.
Claim 6
Dependent Claim
37 words
A closure member according to any one of claims 2 to 4, wherein said of each lugs has a circumferential extent of from 1.0 to 2.0 mm and a radial extent of from 0.2 to 1.0 mm.
Claim 7
Dependent Claim
39 words
A closure member according to any one of claims 1 to 5, wherein said at least one bridge element comprises a plurality of axially extending, circumferentially spaced bridge elements each extending between the skirt wall and said band portion.
Claim 8
Dependent Claim
77 words
A closure member according to claim 6, wherein one of adjacent edges of said skirt wall and band portion is provided with a plurality of axially extending, circumferentially spaced protrusions, each said protrusion terminating short of the other one of said edges and being adapted to engage said other edge on application of an axial or rotational force to said closure member and, by said engagement, to protect said bridge elements from being ruptured by said force.
Claim 9
Dependent Claim
45 words
A closure member according to any one of claims 2 to 7, wherein said locating member comprises an annular flap hingedly connected to the inner surface of the band portion and, in an operative orientation thereof, extending radially inwardly and axially toward said top wall.
Claim 10
Dependent Claim
53 words
A closure member according to claim 8, wherein said annular flap is connected to said inner surface around a hinge line, the width of said flap from said hinge line being less than the spacing between said hinge line and said lugs such that the latter do not impede pivoting of said flap.
Claim 11
Dependent Claim
44 words
A closure according to any one of claims 1 to 9, in combination with a container having around the neck thereof a bead defining a shoulder below which said locating means is received; said centralizing being located around a peripheral face of said bead.
Claim 12
Dependent Claim
49 words
A closure member according to claim 10, wherein said top wall has on the under surface thereof an annular abutment and an annular sealing fin, said sealing fin being deformed by engagement with a rim surface of the container to provide seal between said rim surface and annular abutment.
Claim 13
Dependent Claim
38 words
A closure member according to claim 10, wherein said top wall has on the under surface thereof an annular sealing fin, said sealing fin being received within and providing a seal circumferentially of the neck of said container.
Claim 14
Dependent Claim
40 words
A closure according to claim 12, wherein said container neck immediately below said bead is tapered downwardly and inwardly to facilitate visible separation of said band portion from the cap member on severing of said at least one bridge element.
Claim 15
Dependent Claim
123 words
A container having a neck defining an opening for receiving a closure according to claim 1, said neck being characterised by a finish defining engagement means by which the closure can be releasably applied to the container, a peripheral bead below said engagement means which defines an outwardly facing peripheral surface around which the centralizing means of the closure is positionable and a shoulder facing away from the engagement means behind which the closure locating member is locatable; said neck finish being further characterised by surface means below said bead which is of lesser diameter than said bead peripheral surface and which enables the closure band portion to drop away from the closure skirt on rupturing of the at least one bridge element.
Claim 16
Dependent Claim
40 words
A container according to claim 14 wherein said container is of glass and said surface means is defined a bead of lesser diameter than said peripheral bead, said neck finish being of reduced diameter below said surface means defining bead.
Claim 17
Dependent Claim
16 words
A container according to claim 15 wherein the respective said beads are spaced by a groove.
Claim 18
Dependent Claim
39 words
A container according to claim 14 wherein said container is of a plastics material, said surface means being defined by a frusto-conical section of said neck which decreases in diameter from said bead to a lower reduced diameter section.
References Cited (Backward Citations)
No citation records indexed.
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