Tamper indicating closure member for container

A closure member 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 and around its inner surface;
• the centralizing means being dimensioned radially of said inner surface, relative to a peripheral face defined by a circumferential bead provided on the neck of the container such that, notwithstanding variations in neck diameter within normal tolerances, the closure member once fully applied to the container is centrally located on the container neck with the centralizing means contacting or being closely adjacent said peripheral face of the bead and thereby substantially preventing transverse movement of the closure band portion relative to the container neck;
• said locating member comprising 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;
• said annular flap being 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 centralizing means such that the centralizing means does not impede pivoting of said flap.

A combination comprising a container and a closure, the container having a neck defining an opening and on which the closure is receivable, the closure 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 centalizing means provided on its inner surface, at circumferentially spaced locations around that surface;
• the centralizing means being dimensioned radially of said inner surface, relative to a peripheral face defined by a circumferntial 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 said peripheral face of the bead and thereby substantially preventing transverse movement of the closure band portion relative to the container neck;
• said locating member comprising 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;
• said annular flap being 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 centralizing means such that the centralizing means does not impede pivoting of said flap;
• said neck being characterised by a finish defining engagement means by which the closure can be releasably applied to the container, a pheripheral 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.