Patent Description:
Containers, such as bottles, are generally provided with closure devices, such as caps, to fluidly seal the container. In recent years, it has become desirable to tether the closure device to the container in order to avoid losing the closure device. Not only is this a matter of convenience, but it is also becoming a legal requirement in certain jurisdictions.

Tethering of a closure device to its respective container includes certain mechanisms which allow an attachment of the closure device to a tamper-evidence (TE band) band at an open end of the container. Such mechanisms generally allow severing of frangible links between the closure device and the TE band during opening of the closure device yet allow the closure device to stay connected to the TE band and hence the container when in the open configuration. The typical mechanism also allows the closure device to be actuated between closed and open configurations.

In <CIT>, there is described a cap <NUM> having a tongue <NUM> provided between two leashes. The tongue <NUM> abuts an annular ring <NUM> of the neck, allowing the cap to remain in the open position.

<CIT> describes a one-piece cap with two lines of weakness (<NUM>/<NUM>) which break when unscrewing the cap. The top portion of the cap remains attached to the TE band via the strip <NUM>. A notch <NUM> separates the bridges <NUM> and <NUM>. However, there is no mechanism to maintain the cap in the open position.

In <CIT>, there is described a cap having a tongue <NUM> between the two film hinges <NUM>. The two film hinges <NUM> are connected to the ring <NUM> via a respective arm <NUM>. The tongue can abut the neck of the container when the cap is in the open position, allowing the cap to remain in the open position.

<CIT>describes a one piece cap comprising a cut line <NUM> under a hinge <NUM> to extend a coupling length of the support ring <NUM> with the cap body <NUM>. In some embodiments, the cap body <NUM> includes a wedge k1, which when opened, is retained between the support step <NUM> and the support ring <NUM>.

In <CIT>, a cap is described with two bands <NUM> acting as a hinge between the TE band <NUM> and the cap body <NUM>. A hook <NUM> is provided between the bands <NUM>. When the cap body <NUM> is removed, the hook <NUM> engages the TE band <NUM> and the jaw A of the neck portion.

<CIT> describes a stopper for a container, which includes a main connector that connects a stopper body to a fixing ring and a pair of sub-connectors at either side of the main connector. The fixing ring includes a cutting line for extending a connection length with respect to the stopper body at the time of opening the stopper.

Embodiments of the present technology have been developed based on inventors' appreciation of at least one shortcoming associated with the prior art solutions and approaches to retaining a closure device on a container and allowing retention of an open position of the closure device relative to the container. Inventors have noted that prior art solutions which do attempt to retain the cap relative to the container are not able to achieve this at an angle which allows comfortable access to the container for the user. In the case of the drinking bottles, for example, the cap when open interferes with the user drinking from the bottle.

Accordingly, in the present disclosure, there is provided a closure device which can actuate between a closed configuration and an open configuration, the open configuration enabling a number of open positions of the cap relative to the container. A retaining mechanism of the closure device enables retention of the cap in a fully open position.

From one aspect, there is provided a closure device for a container, the container having a neck including an annular flange along an exterior surface of the neck, the closure device comprising: a cap body; a tamper evident (TE) band, the TE band defined such that, when assembled onto the container, the TE band is positioned below the annular flange for cooperation therewith; a first hinge and a second hinge defined on the cap body; a leash connected to the TE band, the first hinge and the second hinge; the leash allowing for the cap body to be separated from the TE band during opening, but to remain connected thereto via the leash; a tongue protruding from the cap body between the first hinge and the second hinge; when the cap body is actuated from a closed configuration relative to the neck to a fully open position: the leash is configured to retain the cap body to the TE band; an interaction of the tongue and the neck is configured to retain the cap body in the fully open position, characterized in that the interaction of the tongue and the neck is direct.

The direct interaction may be between a lip at a free end of the tongue and the annular flange.

In certain embodiments, the cap body and the TE band are implemented in a flip top arrangement via the first hinge and the second hinge.

In certain embodiments, after the cap body is actuated from the closed configuration relative to the neck to the fully open position, the cap body is configured to be actuated back to the closed configuration and be retained in the closed configuration.

In certain embodiments, the cap body is retained in the closed configuration by means of a threaded interface with the neck.

In certain embodiments, the leash is sized to allow the cap body a degree of rotational freedom sufficient to disengage the threaded interface.

In certain embodiments, the cap body is initially connected to the TE band by means of a frangible link.

In certain embodiments, the frangible link is more fragile than the leash. There may be provided a plurality of frangible links positioned outwardly of the first hinge and the second hinge.

In certain embodiments, the annular flange and the TE band are sized such that the annular flange retains the TE band after the cap body is actuated from the closed configuration relative to the neck to the fully open position.

In certain embodiments, the leash is configured to allow the cap body a rotational degree of freedom to separate the cap body from the neck while retaining the cap body to the TE band.

In certain embodiments, the interaction is an interaction of the tongue with the leash at an upper portion of the annular flange.

In certain embodiments, the first hinge and the second hinge define a first pivotal axis; the leash originates from a pivotal point on the TE band, the pivotal point defining a second pivotal axis.

From another aspect, there is provided a mold for forming the closure device by injection molding, the mold comprising a female cavity piece and a male core piece, the female cavity piece and the male core piece defining a molding cavity configured to form the closure device of claim <NUM>.

From another aspect, there is provided a mold for forming a closure device by injection molding, the mold comprising a female cavity piece and a male core piece, the female cavity piece and the male core piece defining a molding cavity configured to form the closure device as described above.

These and other aspects and features of non-limiting embodiments will now become apparent to those skilled in the art upon review of the following description of specific non-limiting embodiments in conjunction with the accompanying drawings.

The non-limiting embodiments will be more fully appreciated by reference to the accompanying drawings, in which:.

The drawings are not necessarily to scale and may be illustrated by phantom lines, diagrammatic representations and fragmentary views. In certain instances, details that are not necessary for an understanding of the embodiments or that render other details difficult to perceive may have been omitted.

Reference will now be made in detail to various non-limiting embodiment(s) of a closure device for a container. It should be understood that other non-limiting embodiment(s), modifications and equivalents will be evident to one of ordinary skill in the art in view of the non-limiting embodiment(s) disclosed herein and that these variants could be within scope of the invention, which is solely defined by the appended claims.

Furthermore, it will be recognized by one of ordinary skill in the art that certain structural and operational details of the non-limiting embodiment(s) discussed hereafter may be modified or omitted (i.e. non-essential) altogether. In other instances, well known methods, procedures, and components have not been described in detail.

According to non-limiting embodiments of the present technology, there is provided a closure device <NUM> for a container <NUM>. The container <NUM> with which the closure device <NUM> is useable is not limited in its use, configuration or material. In the embodiments illustrated herein, the container <NUM> is a bottle, such as a drink bottle made of polyethylene terephthalate (PET). For example, the container <NUM> can be a blow-molded bottle for containing still water beverage or another flat beverage. Alternatively, the container <NUM> can be for a carbonated beverage. In yet further embodiments, the container <NUM> can be for a hot fill type of beverage (such as a drinkable yogurt, a fruit juice, or the like). However, the closure device <NUM> can be used with other types of containers.

Referring initially to <FIG>, the closure device <NUM> comprises a cap body <NUM> frangibly attached to a tamper evidence band (TE band) <NUM> and moveable between a closed configuration <NUM> (also referred to as "closed position") (<FIG>) and an open configuration <NUM> (<FIG>, <FIG>). The cap body <NUM> is configured to be actuated between the closed configuration <NUM> to the open configuration <NUM>, and to the open configuration <NUM> to the closed configuration <NUM>. The closed configuration <NUM> has a locked mode (<FIG>) and an unlocked mode (<FIG>). In the open configuration, a number of different open positions are possible, as best illustrated in <FIG>, including a fully open position illustrated in <FIG>. The actuation of the cap body <NUM> between any one of: the locked closed configuration, the unlocked closed configuration, and the open configuration, is generally referred to herein as an action of "opening" the closure device <NUM>. The actuation of the cap body <NUM> from the open configuration to the unlocked closed configuration, is generally referred to herein as an action of "closing" the closure device <NUM>.

A retaining mechanism <NUM>, associated with one or both of the cap body <NUM> and the tamper evidence band <NUM>, is provided to retain the closure device <NUM> in the fully open position.

The cap body <NUM> and the TE band <NUM> are sized and shaped to be received around a neck <NUM> of the container <NUM>, the neck <NUM> defining an open end <NUM> of the container <NUM>, and the cap body <NUM> being arranged to close and to fluidly seal the open end <NUM> when in the closed configuration <NUM>. The TE band <NUM> and the cap body <NUM> are arranged to be at least partially separated from one another. As is known in the art, the separation (partial in this case) of the TE band <NUM> and the cap body <NUM>, allows for a "tamper indication" - i.e. an indication that the container <NUM> has been opened.

The container <NUM> also includes an annular flange <NUM> (also referred to as a "tamper-evident bead") extending around an outer surface <NUM> of the neck <NUM> and spaced from the open end <NUM> of the container <NUM>. The tamper evident bead <NUM> protrudes by a first distance <NUM> from the outer surface <NUM> of the neck <NUM>. The TE band <NUM> of the closure device <NUM> is arranged to engage with the tamper evident bead <NUM> of the container <NUM>, to retain the TE band <NUM> on the container <NUM>, in use. The first distance <NUM> of the TE bead <NUM> relative to a size of the TE band <NUM> is such that the TE bead <NUM> retains the TE band after the cap body <NUM> is actuated from the closed configuration <NUM> to the fully open position.

The retaining mechanism <NUM> is arranged to engage with a portion of a neck <NUM> of the container <NUM>, in use, to retain the cap body <NUM> in the open configuration <NUM>. This interaction is a direct interaction. In one non-limiting embodiment of the present technology specifically illustrated in <FIG>, the portion of the neck <NUM> is the tamper evident bead <NUM>. The manner of engagement of the TE band <NUM> and the retaining mechanism <NUM> with the tamper evident bead <NUM>, will be described in more detail below.

The container <NUM> also has a support ledge <NUM> extending around the outer surface <NUM> of the neck <NUM> and spaced from the tamper evident bead <NUM>. The support ledge <NUM> is spaced further from the open end <NUM> of the container <NUM> than the tamper evident bead <NUM>. The support ledge <NUM> protrudes by a second distance <NUM> from the outer surface <NUM> of the neck <NUM> of the container <NUM>, the second distance <NUM> of the support ledge <NUM> being larger than the first distance <NUM> of the tamper evident bead <NUM>. A diameter <NUM> of the TE band <NUM> of the closure device <NUM> is less than a diameter <NUM> of the neck <NUM> at the support ledge <NUM>, which serves to retain the closure device <NUM> above the support ledge <NUM> at the neck <NUM> of the container <NUM>. In other words, a movement of the TE band <NUM> away from the open end <NUM> of the container <NUM> is delimited by the support ledge <NUM>, in use.

The cap body <NUM> is generally cylindrical in shape and has a closed first end <NUM> and an open second end <NUM>. The cap body <NUM> is arranged to be received over the open end <NUM> of the container <NUM>. In this respect, at least the second end <NUM> of the cap body <NUM> has a diameter <NUM> wider than a diameter <NUM> of the container <NUM> at the open end <NUM>, to allow retention of the cap body <NUM> on the neck <NUM>.

The closure device <NUM> is arranged to be retained in the closed configuration <NUM> by means of a threaded interface with the neck. An inner surface <NUM> of the cap body <NUM> has threads <NUM> defined therein which are arranged to cooperate with threads <NUM> (<FIG>) on the outer surface <NUM> of the neck <NUM> of the container <NUM>. The threads <NUM> have been omitted from <FIG>, and <FIG>. As best seen in <FIG> and <FIG>, in certain embodiments, the inner surface <NUM> of the cap body <NUM> has a threaded annular portion <NUM> which includes the threads <NUM>, and a non-threaded annular portion <NUM> which does not include any threads <NUM>. The threaded annular portion <NUM> is proximate the open second end <NUM> of the cap body <NUM>. The cap body <NUM> is retained in the closed configuration <NUM> by means of the threaded interface with the neck <NUM> of the container <NUM>.

In alternative embodiments (not shown), one or both of the cap body <NUM> and the neck <NUM> does not include the threads <NUM> and is sized and shaped to snap-fit onto the neck <NUM> to close the open end <NUM> of the container <NUM>.

An outer surface <NUM> of the cap body <NUM> is textured to facilitate gripping of the cap body <NUM>. As seen in <FIG>, the texturing comprises a plurality of ribs <NUM> (also known as "knurls") extending in a direction between the first and second ends <NUM>, <NUM> of the cap body <NUM>. It should be noted that the sizing and the pattern of the plurality of ribs <NUM> is not limited to those depicted herein. It is also noted that in alternative embodiments of the present technology, the plurality of ribs <NUM> can be omitted altogether.

The cap body <NUM> is frangibly connected to the TE band <NUM> by a plurality of links <NUM> which are frangible. The links <NUM> are arranged to be severed when the cap body <NUM> and the TE band <NUM> are rotatably moved relative to one another. A tensile strength of the links <NUM> are lower than a tensile strength of the TE band <NUM>, which means that the links <NUM> will be severed before tensile damage to the TE band <NUM>.

In use, in the closed configuration (<FIG>), the cap body <NUM> is retained over the open end <NUM> of the container <NUM>, adjacent the TE band <NUM>, and connected thereto by one or more of the links <NUM> when they are intact, and the retaining mechanism <NUM>.

As noted earlier, the closed configuration <NUM> of the closure device <NUM> has the locked closed configuration (<FIG>), and the unlocked closed configuration (<FIG>). In the locked closed configuration, the links <NUM> are intact and connect the cap body <NUM> to the TE band <NUM> (together with the retaining mechanism <NUM>). In the unlocked closed configuration, the links <NUM> are severed and the cap body <NUM> is connected to the TE band <NUM> by means of the retaining mechanism <NUM> only. The links <NUM> are arranged to be severed by a rotary movement of the cap body <NUM> relative to the TE band <NUM>. In this respect, the retaining mechanism <NUM> is arranged to permit sufficient rotary movement of the cap body <NUM> relative to the TE band <NUM> to sever the links <NUM>.

The cap body <NUM> is moveable between the closed configuration <NUM> (in the unlocked mode) to the open configuration <NUM> through a hinged movement about a pivot region of the retaining mechanism <NUM>. The plurality of open positions of the cap body <NUM> are defined by a positioning angle <NUM> between an axis <NUM> of the cap body <NUM> along a diametric plane of the cap body <NUM>, and an axis <NUM> of the neck <NUM> of the container <NUM> along a diametric plane of the neck <NUM>. The open positions represented in <FIG>, as well as in <FIG>, respectively, have positioning angles <NUM> which are less than <NUM> degrees (e.g. about <NUM> degrees), <NUM> degrees, and between about <NUM> degrees and about <NUM> degrees (e.g. about <NUM> degrees). In certain embodiments, the fully open position is defined by a positioning angle <NUM> of more than <NUM> degrees, such as about <NUM> degrees.

Turning now to the retaining mechanism <NUM>, best seen in <FIG>, which enables retention of the cap body <NUM> on the container <NUM> in the closed and open configurations <NUM>, <NUM>, and enables retention of the cap body <NUM> at the fully open position of the open configuration.

As best seen in <FIG>, the retaining mechanism <NUM> comprises a first hinge <NUM> and a second hinge <NUM> defined on the cap body <NUM>. A leash <NUM> is provided connected to the TE band <NUM>, the first hinge <NUM> and the second hinge <NUM>. The leash <NUM> is connected to the TE band <NUM> at a first connection point <NUM> and a second connection point <NUM>. The first and second connections points <NUM>, <NUM> are positioned one on either side of the first and second hinges <NUM>, <NUM>. A tongue <NUM> extends from the cap body <NUM> between the first hinge <NUM> and the second hinge <NUM>.

The first and second hinges <NUM>, <NUM> are spaced from one another circumferentially around the second end <NUM> of the cap body <NUM>. Each of the first and second hinges <NUM>, <NUM> comprise a hinge body <NUM> extending from the second end <NUM> of the cap body <NUM>. Each hinge body <NUM> has a hinged end <NUM> which is hingedly connected to the cap body <NUM>, and a leash end <NUM> which is connected to the leash <NUM>.

By hingedly connected is meant that the hinge body <NUM> is moveably connected to the cap body <NUM> in a manner that allows relative axial movement. This is also referred to as a "flip-top" arrangement. The connection between the leash end <NUM> of the hinge body <NUM> and the leash <NUM> is not a hinged connection.

The hinged end <NUM> of each of the first and second hinges <NUM>, <NUM> are positioned inwardly of a rim <NUM> of the second open end <NUM> of the cap body <NUM>, towards the first closed end <NUM> of the cap body <NUM>. The leash end <NUM> of each of the first and second hinges <NUM>, <NUM> protrude further than the rim <NUM> of the cap body <NUM>, such that the leash end <NUM> of each of the first and second hinges <NUM>, <NUM> are respectively positioned beyond the rim <NUM> of the second open end <NUM> of the cap body <NUM>, away from the second end <NUM> of the cap body <NUM>. The arrangement of the tongue <NUM> relative to the leash <NUM> defines a gap <NUM> allowing relative movement between the tongue <NUM> and the leash <NUM>.

The leash <NUM> allows separation of the cap body <NUM> from the TE band <NUM> during opening (i.e. from the locked mode to the unlocked mode of the closed configuration <NUM>), whilst remaining connected to the TE band <NUM>. The leash <NUM> is sized and shaped to allow the cap body <NUM> a degree of rotational freedom sufficient to disengage the threaded interface (<NUM>, <NUM>).

A frangible bridge <NUM> is provided between the leash <NUM> and the TE band <NUM>, which is severed during rotational actuation from the locked mode to the unlocked mode of the closure device <NUM>. A tensile strength of the frangible bridge <NUM> is lower than a tensile strength of the leash <NUM>. The severing of the bridge <NUM> causes a separation between the leash <NUM> and the TE band <NUM>, defining therein a foothold opening <NUM> between the leash <NUM> and the TE band <NUM>. More than one frangible bridge <NUM> may be provided. The foothold opening <NUM> is sized and shaped to receive at least a portion of the TE bead <NUM> of the container <NUM>. The size of the leash <NUM> allows a degree of rotational movement of the cap body <NUM> to break the bridge <NUM> and to disengage the threads <NUM>. As best seen in <FIG>, the engagement of the TE bead <NUM> in the foothold opening <NUM> serves to retain the position of the TE band <NUM> relative to the neck <NUM> of the container <NUM>, during movement of the cap body <NUM> between the different open positions.

The tongue <NUM> comprises a tongue body <NUM> having a free end <NUM> extending from the cap body <NUM> between the first hinge <NUM> and the second hinge <NUM>. The free end <NUM> of the tongue <NUM> does not protrude further than the rim <NUM> of the cap body <NUM> and is aligned with the rim <NUM> of the cap body <NUM>. In the closed configuration, the free end <NUM> of the tongue <NUM> is spaced from the leash <NUM>. At the free end <NUM> of the tongue <NUM> is provided a lip <NUM>. When the cap body <NUM> is actuated from the closed configuration <NUM> to the open configuration <NUM> in the fully open position, an interaction of the tongue <NUM> and the TE bead <NUM> of the container <NUM> is configured to retain the cap body <NUM> in the fully open position. More specifically, an interaction of the lip <NUM> of the tongue <NUM> with the leash <NUM> and an upper portion <NUM> (<FIG>) of the TE bead <NUM>, enables retention of the cap body <NUM> in the fully open position.

The functioning of the retaining mechanism <NUM> will be described in more detail with reference to <FIG>. When actuating the cap body <NUM> towards the fully open position, movement of the cap body <NUM> away from the open end <NUM> of the container <NUM>, causes the tongue <NUM> to be brought towards the leash <NUM> and to contact the leash <NUM>, the leash <NUM> resting on the upper portion <NUM> of the TE bead <NUM>. The cap body <NUM> hinges about the hinged end <NUM> of the first and second hinges <NUM>, <NUM>, respectively. In turn, the leash <NUM> is pushed against the TE bead <NUM> (<FIG>). Movement of the cap body <NUM> to the fully open position (<FIG>), causes the lip <NUM> of the tongue <NUM> to be received between the leash <NUM> and the TE bead <NUM>, thereby retaining the fully open position. In other words, direct interaction of the leash <NUM>, the tongue <NUM> and the neck <NUM> enables retention of the cap body <NUM> in the fully open position. It will be appreciated that the first hinge <NUM> and the second hinge <NUM> define a first pivotal axis <NUM> (<FIG>). A second pivotal axis <NUM> (<FIG>) is defined by pivotal points (connection points <NUM>, <NUM>) where the leash <NUM> originates on the TE band <NUM>.

As such, it can be said that the leash <NUM> functions to retain a position of the closure device <NUM> during opening and/or closing; and that the tongue <NUM> functions to maintain the closure device <NUM> in the fully open position.

Another embodiment of the closure device <NUM> is illustrated in Figures <NUM>-10D. This embodiment of the closure device <NUM> differs from that of <FIG> in the configuration and functioning of the retaining mechanism <NUM>, and more specifically in the manner of connection of the leash <NUM> to the TE band <NUM>.

In the embodiment of <FIG>, the leash <NUM> is connected to the TE band <NUM> by a single connection point <NUM> positioned between the first hinge <NUM> and the second hinge <NUM>. The single connection point <NUM> is positioned under the tongue <NUM>. In other words, the leash <NUM> comprises a first leash arm <NUM> extending from the first hinge <NUM>, and a second leash arm <NUM> extending from the second hinge <NUM>, both the first and second leash arms <NUM>, <NUM> extending towards the TE band <NUM> to meet the TE band <NUM> at the single connection point <NUM>. The first leash arm <NUM> and the second leash arm <NUM> originate from separate locations on the cap body <NUM> and converge towards a pivot region <NUM> on the TE band <NUM>, the pivot region <NUM> defining a second pivotal axis <NUM>. The single connection point <NUM> defines the pivot region <NUM> in certain embodiments.

Accordingly, the foothold opening <NUM>, in this embodiment, comprises a first foothold opening 90a defined by the first leash arm <NUM> and a portion of the TE band <NUM> oppositely facing the first leash arm <NUM>, and a second foothold opening 90b defined by the second leash arm <NUM> and a portion of the TE band <NUM> oppositely facing second leash arm <NUM>. As best seen, during opening, the first and second foothold openings 90a, 90b are arranged to receive a portion of the TE bead <NUM>.

The gap <NUM> between the tongue <NUM> and the leash <NUM> is defined by the first leash arm <NUM>, the second leash arm <NUM> and the free end <NUM> of the tongue <NUM>. The gap <NUM> is wider at a point corresponding to the single connection point <NUM> compared to a distance between the tongue <NUM> and the first leash arm <NUM>, or the tongue <NUM> and the second leash arm <NUM> at the points where they meet the first and second hinges <NUM>, <NUM> respectively.

The functioning of the retaining mechanism <NUM> will be described in more detail with reference to <FIG>. When actuating the cap body <NUM> towards the fully open position, the leash <NUM> interacts with the TE bead <NUM>. The cap body <NUM> rotates with respect to the neck <NUM> of the container <NUM> about the first pivotal axis <NUM> (<FIG>), defined by the first and second hinges <NUM>, <NUM>, and the second pivotal axis <NUM> (<FIG>), which is defined in this embodiment by the pivot region <NUM> defined by the single connection point <NUM> (<FIG>).

When the cap body <NUM> is at a position (<FIG>) which is beyond the fully open position of <FIG>, the tongue <NUM> is caused to extend through the gap <NUM> defined at least in part by the first and second leash arms <NUM>, <NUM>. The lip <NUM> of the tongue <NUM> is caused to face the TE bead <NUM> with the cap body <NUM> in an inverted position compared to a position of the cap body <NUM> when in the closed configuration. Movement of the cap body <NUM> towards the neck <NUM> of the container <NUM> causes engagement of the lip <NUM> of the tongue <NUM> with the upper portion <NUM> of the TE bead <NUM>, thereby retaining the fully open position.

The closure device <NUM> of <FIG>, as well as the closure device <NUM> of <FIG> are examples of a "direct contact" between the tongue <NUM> and the neck <NUM>.

Another closure device <NUM> is illustrated in <FIG>. This closure device <NUM> differs from that of <FIG> in the configuration and functioning of a retaining mechanism 22a which differs from the retaining mechanism <NUM> of previous examples, as well as in the relative location of first and second hinges 72a, 74a, leash 76a and tongue 78a.

The closure device <NUM> comprises the cap body <NUM> frangibly attached to the tamper evidence band (TE band) <NUM>, and the retaining mechanism 22a. The closure device <NUM> is moveable between the closed configuration <NUM> (locked and unlocked) and the open configuration (with different open positions including the fully open position). The retaining mechanism 22a, associated with one or both of the cap body <NUM> and the tamper evidence band <NUM>, is provided to retain the closure device <NUM> in the fully open position.

The retaining mechanism 22a is arranged to engage with a portion of the neck <NUM> of the container <NUM>, specifically the TE bead <NUM>, to retain the cap body <NUM> in the open configuration <NUM>. The retaining mechanism 22a differs from that of <FIG>, and that of <FIG>, in that the engagement between the neck <NUM> of the container <NUM> and the cap body <NUM> is "indirect".

As best seen in <FIG>, the cap body <NUM> has a cut-out portion <NUM> in the rim <NUM>. The retaining mechanism 22a comprises a tongue 78a of the cap body <NUM> defined in the cap body <NUM> above the cut-out portion <NUM>. The tongue 78a has a tongue body 92a having a free end 94a with a lip 96a at the free end 94a. The free end 94a is aligned with the cut-out portion <NUM>.

First and second hinges 72a, 74b are provided extending from the TE band <NUM>. The first and second hinges 72a, 74a are spaced from one another circumferentially around the TE band <NUM>. Each one of the first and second hinges 72a, 74a comprise a hinge body 80a extending from the TE band <NUM> and having a hinged end 82a, hingedly connected to the TE band <NUM>, and a leash end 84a, connected to a leash 76a. The leash 76a comprises first and second leash arms 108a, 110a which originate from separate locations <NUM>, <NUM> on the cap body <NUM> and converge towards the pivot region <NUM>.

The leash 76a extends from (i) a first point <NUM> on the cap body <NUM> to the first hinge 72a (first leash arm 108a), (ii) from the first hinge 72a to the second hinge 74a, and (iii) from the second hinge 74a to a second point <NUM> (second leash arm 110a). The leash 76a, and a portion of the cap body <NUM> between the first and second points <NUM>, <NUM> on the cap body <NUM> from which the leash 76a extends defines an enclosed opening <NUM>. The enclosed opening <NUM> is arranged to allow modification of a distance of the cap body <NUM> from the tongue 78a during opening and closing.

On the TE band <NUM>, between the first and second hinges 72a, 74a, there is provided a ratchet <NUM> having a contact surface <NUM> for contacting the tongue 78a during opening. The ratchet <NUM> is wedge-shaped, with a free end <NUM> which is thinner than a portion <NUM> of the ratchet <NUM> connected to the TE band <NUM>. An inner surface <NUM> of the ratchet is arranged to engage with the TE bead <NUM>. The contact surface <NUM> of the ratchet <NUM> is sized and shaped to engage with the lip 96a of the tongue 78a. The portion of the leash 76a between the first and second hinges 72a, 74a, the first and second hinges 72a, 74a, and the ratchet <NUM> define a gap <NUM>, similar to the gap <NUM>.

When the cap body <NUM> is actuated from the closed configuration <NUM> (<FIG>) to the open configuration <NUM> (<FIG>), the portion of the leash 76a between the first and second hinges 72a, 74a contacts the upper portion <NUM> of the TE bead <NUM>. The lip 96a contacts the contact surface <NUM> of the ratchet <NUM>. The lip 96a is positioned outwardly of the portion of the leash 76a between the first and second hinges 72a, 74a. The cap body <NUM> rotates about a pivot region <NUM> defining a pivotal axis <NUM>, the pivot region <NUM> comprising at least a portion of the first and second hinges 72a, 74a (<FIG>).

As the cap body <NUM> is rotated about the pivotal axis <NUM> (<FIG>), a distance of the cap body <NUM> from the leash <NUM> increases. In turn, the contact of the lip <NUM> with the contact surface <NUM> of the ratchet <NUM> moves towards the portion <NUM> of the ratchet <NUM> connected to the TE band <NUM>. The TE band <NUM> is brought into contact with a step <NUM> of the support ledge <NUM> by a general downwards movement of the TE band <NUM> caused by the pivoting of the cap body <NUM>. At the same time, the contact of the portion of the leash 76a between the first and second hinges 72a, 74a moves along the upper portion <NUM> of the TE bead <NUM> towards the ratchet <NUM>. The TE band <NUM> with the ratchet <NUM> generally maintains its position between the TE bead <NUM> and the support ledge <NUM>.

In the fully open position (<FIG>), the lip 96a of the tongue 78a is brought upwardly to the free end <NUM> of the ratchet <NUM> to contact the leash 76a (the portion between the first and second hinges 72a, 74a). The distance between the portion of the leash 76a between the first and second hinges 72a, 74a and the cap body <NUM> is decreased. The force of the hinges 72a, 74a and the leash 76a pulls the tongue 78a against the ratchet <NUM> to cause retention of the cap body <NUM> in the fully open position. In certain embodiments, the tongue 78a is positioned in between the leash 76a and the ratchet <NUM> which gives rise to a wedging effect, however this is not required for retention of the cap body <NUM> in the fully open position.

As such, it can be said that the enclosed opening <NUM> and the leash 76a enables the pivoting of the cap body <NUM> as well as the positioning of the lip <NUM> relative to the leash to maintain the closure device <NUM> in the fully open position. The retention of the cap body <NUM> in the fully open position is by means of an indirect contact between the tongue 78a and the neck <NUM> via the ratchet <NUM>.

Another closure device <NUM> is illustrated in Figures <NUM>-17D. This closure device <NUM> differs from that of Figures <NUM>-17D in the configuration and functioning of the retaining mechanism 22b which differs from the retaining mechanism 22a in the configuration of the leash and the omission of the hinges 72a, 74a.

The closure device <NUM> of <FIG> comprises the cap body <NUM> frangibly attached to the tamper evidence band (TE band) <NUM>, and the retaining mechanism 22b. The closure device <NUM> is moveable between the closed configuration <NUM> (locked and unlocked) and the open configuration (with different open positions including the fully open position). The retaining mechanism 22b, associated with one or both of the cap body <NUM> and the tamper evidence band <NUM>, is provided to retain the closure device <NUM> in the fully open position.

The retaining mechanism 22b is arranged to engage with a portion of the neck <NUM> of the container <NUM>, specifically the TE bead <NUM>, to retain the cap body <NUM> in the open configuration <NUM>. The retaining mechanism 22b differs from that of <FIG>, and that of <FIG>, in that the engagement between the neck <NUM> of the container <NUM> and the cap body <NUM> is indirect.

As best seen in <FIG>, the retaining mechanism 22b comprises a tongue 78a defined in the cap body <NUM>, above the cut-out portion <NUM>. The tongue 78a has a tongue body 92b having a free end 94a with a lip 96a at the free end 94a.

On the TE band <NUM>, there is provided a TE band cut-out region <NUM>. Extending from the TE band <NUM> at the TE band cut-out region <NUM> there is provided a ratchet <NUM> having a contact surface <NUM> for contacting the tongue 78a during opening. The ratchet <NUM> is wedge-shaped, with a free end <NUM> which is thinner than a portion <NUM> of the ratchet <NUM> connected to the TE band <NUM>. The inner surface <NUM> of the ratchet is arranged to engage with the TE bead <NUM>. The contact surface <NUM> of the ratchet <NUM> is sized and shaped to engage with the lip 96a of the tongue 78a.

A leash 76b extends between the cap body <NUM>, at the cut-out portion <NUM>, to the ratchet <NUM>. The leash 76b comprises a first leash elbow <NUM> and a second leash elbow <NUM>. The first leash elbow <NUM> extends from a first point 112a on the cap body <NUM>, within the cut-out portion <NUM>, to a first side <NUM> of the ratchet <NUM> within the TE band cut-out region <NUM>. The second leash elbow <NUM> extends from a second point 114a on the cap body <NUM>. The first point 112a and the second point 114a are spaced apart from one another and positioned inwardly of edges <NUM> of the cut-out portion <NUM>.

The first and second leash elbows <NUM>, <NUM> each have a "V" shaped configuration giving them an expandable form. The first and second leash elbows <NUM>, <NUM> can be considered to be arranged to resiliently bias the cap body towards the ratchet. Other expandable or resiliently biased configurations are also possible and within the scope of the present technology.

The first leash elbow <NUM>, the second leash elbow <NUM>, the ratchet <NUM> and a portion of the cap body <NUM> define an enclosed opening 116a. Frangible links <NUM> are provided between the TE band <NUM> and the rim <NUM> of the cap body <NUM>, as well as between the first and second leash elbows <NUM>, <NUM>. The leash 76b is arranged to allow sufficient rotational movement between the cap body <NUM> and the TE band <NUM> to allow the frangible links <NUM> to sever on opening of the closure device <NUM>.

When the cap body <NUM> is actuated from the closed configuration <NUM> (<FIG>) to the open configuration <NUM> (<FIG>), the cap body <NUM> rotates about a pivotal region 130a defining a pivotal axis 132a, the pivotal region 130a comprising at least a portion of the first and second leash elbows <NUM>, <NUM> (<FIG>). These can be considered as two hinged areas.

As the cap body <NUM> is rotated about the pivotal axis 132a (<FIG>), the lip <NUM> contacts the contact surface <NUM> of the ratchet 118a. The TE band <NUM> is caused to move generally downwards causing a contact of the TE band with the step <NUM> of the support ledge <NUM>.

In the fully open position (<FIG>), the TE band <NUM> and the ratchet <NUM> engage with step <NUM> of the support ledge <NUM> and the TE bead <NUM>, respectively. This serves to position the TE band <NUM> and the ratchet <NUM> relative to the neck <NUM>, providing a counterforce to the lip <NUM> pushing into the contact surface <NUM> of the ratchet <NUM>, causing retention of the cap body <NUM> in the fully open position.

The closure device <NUM>, including the cap body <NUM>, the TE band <NUM> and the retaining mechanism <NUM>, have a one-piece construction.

A further closure device <NUM> is illustrated in <FIG>. Like the closure device <NUM> of <FIG>, the closure device <NUM> of <FIG> comprises the cap body <NUM> frangibly attached to the tamper evidence band (TE band) <NUM> and moveable between the closed configuration <NUM> (<FIG>- and <NUM>) and the open configuration <NUM> (<FIG>). Locked (<FIG>) and unlocked modes (<FIG>) are possible in the closed configuration <NUM>. In the open configuration <NUM>, the cap body <NUM> is moveable between a number of different open positions ranging from partially open to the fully open position seen in <FIG>. The retaining mechanism <NUM> is arranged to retain the cap body <NUM> in the fully open position.

The cap body <NUM> is generally cylindrical in shape and has the closed first end <NUM> and the open second end <NUM>. The cap body <NUM> is arranged to be received over the open end <NUM> of the container <NUM>.

The closure device <NUM> is arranged to be retained in the closed configuration <NUM> by means of the threaded interface with the neck <NUM> of the container <NUM>. The inner surface <NUM> of the cap body <NUM> has threads <NUM> defined therein which are arranged to cooperate with threads <NUM> on the outer surface <NUM> of the neck <NUM> of the container <NUM>. The threads <NUM> have been omitted from <FIG>.

The outer surface <NUM> of the cap body <NUM> is textured to facilitate gripping of the cap body <NUM>. As seen in <FIG>, the texturing comprises the plurality of ribs <NUM> (also known as "knurls") extending in a direction between the first and second ends <NUM>, <NUM> of the cap body <NUM>. It should be noted that the sizing and the pattern of the plurality of ribs <NUM> is not limited to those depicted herein. The plurality of ribs <NUM> can be omitted altogether.

The cap body <NUM> is frangibly connected to the TE band <NUM> by the plurality of links (bridges) <NUM> which are frangible. The links <NUM> are arranged to be severed when the cap body <NUM> and the TE band <NUM> are rotatably moved relative to one another. The tensile strength of the links <NUM> are lower than the tensile strength of the TE band <NUM>, which means that the links <NUM> will be severed before tensile damage to the TE band <NUM>.

In use, in the locked closed configuration (<FIG>), the cap body <NUM> is retained over the open end <NUM> of the container <NUM>, adjacent the TE band <NUM>, and connected thereto by one or more of the links <NUM> when they are intact, and the retaining mechanism <NUM>.

In the unlocked closed configuration (<FIG>), the links <NUM> are severed and the cap body <NUM> is connected to the TE band <NUM> by means of the retaining mechanism <NUM> only. The links <NUM> are arranged to be severed by a rotary movement of the cap body <NUM> relative to the TE band <NUM>. In this respect, the retaining mechanism <NUM> is arranged to permit sufficient rotary movement of the cap body <NUM> relative to the TE band <NUM> to sever the links <NUM>. The cap body <NUM> is moveable between the closed configuration <NUM> (in the unlocked mode) to the open configuration <NUM> through a hinged movement about a pivot region of the retaining mechanism <NUM>.

Turning now to the retaining mechanism <NUM> which enables retention of the cap body <NUM> on the container <NUM> in the closed and open configurations <NUM>, <NUM>, and enables retention of the cap body <NUM> at the fully open position of the open configuration.

As best seen in <FIG>, the retaining mechanism <NUM> comprises the first hinge <NUM> and the second hinge <NUM> defined on the cap body <NUM>, and the tongue <NUM> extending from the cap body <NUM> between the first hinge <NUM> and the second hinge <NUM>. Unlike the closure device <NUM> of <FIG>, in the closure device <NUM> of <FIG>, there are provided two leashes: a first leash 76a, and a second leash 76b. The first leash 76a connects the TE band <NUM> to the first hinge <NUM>, and the second leash 76b connects the TE band <NUM> to the second hinge <NUM>. The first leash 76a is connected to the TE band <NUM> at the first connection point <NUM> and the second leash 76b is connected to the TE band <NUM> at the second connection point <NUM>. The first and second connections points <NUM>, <NUM> are positioned one on either side of the first and second hinges <NUM>, <NUM>. A distance between the first and second connection points <NUM>, <NUM> in the closure device <NUM> of <FIG> is greater than a distance between the connection points <NUM>, <NUM> of the closure device <NUM> of <FIG>. It can thus be said that a total leash length of the closure device of the closure device <NUM> of <FIG> (a length of the first leash 76a and a length of the second leash 76b) is greater than a total leash length in the closure device <NUM> of <FIG>. A length of the first leash 76a and the second leash 76b is sufficient to enable the removal of the cap body <NUM> from the neck <NUM>.

The first and second hinges <NUM>, <NUM> are spaced from one another circumferentially around the second end <NUM> of the cap body <NUM>. Each of the first and second hinges <NUM>, <NUM> comprises the hinge body <NUM> extending from the second end <NUM> of the cap body <NUM>. Each hinge body <NUM> has the hinged end <NUM> which is hingedly connected to the cap body <NUM>, and the leash end <NUM> which is connected to the respective first leash 76a or second leash 76b. By hingedly connected is meant that the hinge body <NUM> is moveably connected to the cap body <NUM> in a manner that allows relative axial movement. This is also referred to as a "flip-top" arrangement. The connection between the leash end <NUM> of the hinge body <NUM> and the leash <NUM> is not a hinged connection.

The hinged end <NUM> of each of the first and second hinges <NUM>, <NUM> is positioned inwardly of the rim <NUM> of the second open end <NUM> of the cap body <NUM>, towards the first closed end <NUM> of the cap body <NUM>. The leash end <NUM> of each of the first and second hinges <NUM>, <NUM> protrudes further than the rim <NUM> of the cap body <NUM>, such that the leash end <NUM> of each of the first and second hinges <NUM>, <NUM> are respectively positioned beyond the rim <NUM> of the second open end <NUM> of the cap body <NUM>, away from the second end <NUM> of the cap body <NUM>.

Unlike the closure device <NUM> of <FIG>, the TE band <NUM> has a protruding portion <NUM> extending towards the tongue <NUM>. When compared with the closure device <NUM> of <FIG>, the protruding portion can be considered as a mid-portion of the leash which has been made integral with the TE band <NUM>, and the leash <NUM> converted to the first leash 76a and the second leash 76b, with the protruding portion <NUM> positioned between free ends of the first leash 76b and the second leash 76b when the cap body <NUM> is the closed and locked configuration. The arrangement of the tongue <NUM> relative to the protruding portion <NUM> defines a gap <NUM> allowing relative movement between the tongue <NUM> and the protruding portion <NUM>. The leash <NUM> allows separation of the cap body <NUM> from the TE band <NUM> during opening (i.e. from the locked mode to the unlocked mode of the closed configuration <NUM>), whilst remaining connected to the TE band <NUM>. The first leash 76a and the second leash 76b are sized and shaped to allow the cap body <NUM> a degree of rotational freedom sufficient to disengage the threaded interface <NUM>, <NUM>.

During rotational actuation from the locked mode to the unlocked mode of the closure device <NUM>, a separation between the tongue <NUM> and the protruding portion <NUM> is created, defining therein a foothold opening 90a between the tongue <NUM> and the protruding portion <NUM>. The foothold opening 90a is sized and shaped to allow an un-interfered rotation of the tongue <NUM> relative to the protruding portion <NUM>.

The lengths of the leashes 76a, 76b allow a degree of rotational movement of the cap body <NUM> to break the frangible links <NUM>, positioned between the TE band <NUM> and the leashes 76a, 76b, respectively, and to disengage the threads <NUM>.

As best seen in <FIG> and <FIG>, the engagement of the protruding portion <NUM> against the TE bead <NUM>, and the contact of the tongue <NUM> against the protruding portion <NUM> serves to retain the position of the TE band <NUM> relative to the neck <NUM> of the container <NUM>, during movement of the cap body <NUM> between the different open positions.

As before, the tongue <NUM> comprises the tongue body <NUM> having the free end <NUM> with the lip <NUM> formed thereon. The free end <NUM> of the tongue <NUM> does not protrude further than the rim <NUM> of the cap body <NUM> and is aligned with the rim <NUM> of the cap body <NUM>. Unlike the closure device <NUM> of <FIG>, the lip <NUM> of the closure device <NUM> of <FIG> extends further than the lip <NUM> of <FIG>. A length of the lip <NUM> of the embodiment of <FIG> is about <NUM> to about <NUM>, compared to a length of about <NUM> to about <NUM> for the lip <NUM> of the closure device <NUM> of <FIG>. This increases a contact area between the tongue <NUM> and the protruding portion <NUM> for increased stability in the open configuration. It can also provide a larger opening angle. As can clearly be seen from a comparison of <FIG> and <FIG>, the closure device <NUM> of <FIG> allow a maximum retained opening angle of about <NUM>°, compared to a maximum opening angle of about <NUM>° in the closure device <NUM> of <FIG>. Also, the increased leash 76a, 76b and lip <NUM> sizes enables the cap body <NUM> to be spaced further from the neck and to provide a sound signal (e.g. a click) as will be described below.

The functioning of the retaining mechanism <NUM> will be described in more detail with reference to <FIG>, B and C. When actuating the cap body <NUM> towards the fully open position, movement of the cap body <NUM> away from the open end <NUM> of the container <NUM>, causes an orientation of the lip <NUM> of the tongue <NUM> relative to the protruding portion <NUM> to change. The cap body <NUM> hinges about the hinged end <NUM> of the first and second hinges <NUM>, <NUM>, respectively. In turn, the first leash 76a and the second 76b are respectively pushed against the supporting ledge <NUM>.

As the fully open position is approached, the lip <NUM> contacts a top surface <NUM> of the protruding portion <NUM>, with the TE band <NUM> resting on the support ledge <NUM> and the protruding portion <NUM> spaced from the TE bead <NUM> (<FIG>). As the cap body <NUM> continues to be rotated away from the open end <NUM> of the container <NUM>, the lip <NUM> slides off the top surface <NUM> of the protruding portion <NUM> and along an outer surface <NUM> of the protruding portion <NUM> (<FIG>). In the fully open position, and once the cap body <NUM> is released, the lip <NUM> rests against the outer surface of the protruding portion and the protruding portion <NUM> rests against the TE bead <NUM> (<FIG>). An audible sound is produced as the protruding portion <NUM> is brought into contact with the TE bead <NUM> on release of the cap body <NUM>. Without being held to any theory, it is thought that this is caused by the release of potential energy in the TE band <NUM> deriving from an extension of the TE band <NUM> away from the neck <NUM> of the container <NUM> during opening. The audible sound is a click or the like. In other words, direct interaction of the first leash 76a, the second leash 76b, the protruding portion <NUM>, the tongue <NUM> and the neck <NUM> enables retention of the cap body <NUM> in the fully open position. The first hinge <NUM> and the second hinge <NUM> define the first pivotal axis <NUM>. The second pivotal axis <NUM> is defined by pivotal points at the connection points <NUM>, <NUM>.

As such, it can be said that the first and second leashes 76a, 76b function to retain a position of the closure device <NUM> during opening and/or closing; and that the tongue <NUM> and the protruding portion <NUM> function to maintain the closure device <NUM> in the fully open position.

The closure device <NUM> of <FIG> differs from that of <FIG>, in that three ribs <NUM> are provided on the TE band <NUM>. Each rib <NUM> is elongate and extends along an outer surface of the TE band <NUM>. Each rib <NUM> extends outwardly from the outer surface to create an embossed portion. The ribs <NUM> are of generally rectangular form and extend across the TE band <NUM> in a direction from the TE band <NUM> to the cap body <NUM>. The three ribs <NUM> are substantially parallel to one another, and spaced from one another. The ribs <NUM> extend from a lower end of the TE band <NUM> and stop short of an upper end of the TE band <NUM>. Although illustrated as being of similar or same configuration, the ribs <NUM> may have a different configuration to one another. Instead of three ribs <NUM>, the TE band may have a single rib, two ribs or any other number of ribs. The ribs <NUM> may have a non-rectangular configuration. The purpose of the ribs is to provide a raised contact surface for the lip <NUM> when the cap body <NUM> is in the open configuration, which in certain cases creates a pre-load effect.

In certain cases, the ribs <NUM> ensure that the TE band <NUM> and the lip <NUM> are engaging in an upper portion of the TE band <NUM>, close to a position of the neck pilfer proof. In addition, the ribs, in certain cases, ensure that a rotation point is above the ribs <NUM> on the TE band which can provide a robustness to the open position.

A further closure device <NUM> is illustrated in <FIG>. Like the closure device <NUM> of <FIG>, the closure device <NUM> comprises the cap body <NUM> frangibly attached to the tamper evidence band (TE band) <NUM> and moveable between the closed configuration <NUM> (<FIG>) and the open configuration <NUM> (<FIG>). Locked and unlocked modes are possible in the closed configuration <NUM>. In the open configuration <NUM>, the cap body <NUM> is moveable between a number of different open positions ranging from partially open to the fully open position seen in <FIG>, B and C. The retaining mechanism <NUM> is arranged to retain the cap body <NUM> to the TE band during opening, and to retain the cap body <NUM> in the fully open position.

The closure device <NUM> is arranged to be retained in the closed configuration <NUM> by means of the threaded interface with the neck <NUM> of the container <NUM>. The inner surface <NUM> of the cap body <NUM> has threads <NUM> defined therein which are arranged to cooperate with threads <NUM> on the outer surface <NUM> of the neck <NUM> of the container <NUM> (<FIG>).

Turning now to the retaining mechanism <NUM>, which enables one or both of: (i) retention of the cap body <NUM> on the container <NUM> in the closed and open configurations <NUM>, <NUM>, and (ii) retention of the cap body <NUM> at the fully open position of the open configuration.

As best seen in <FIG>, and similarly to the closure device <NUM> of <FIG>, the retaining mechanism <NUM> comprises the first hinge <NUM> and the second hinge <NUM> defined on the cap body <NUM>, the tongue <NUM> extending from the cap body <NUM> between the first hinge <NUM> and the second hinge <NUM>, a first leash 76a connecting the TE band <NUM> to the first hinge <NUM>, a second leash 76b connecting the TE band <NUM> to the second hinge <NUM>. The first leash 76a is connected to the TE band <NUM> at the first connection point <NUM> and the second leash 76b is connected to the TE band <NUM> at the second connection point <NUM>. The first and second connections points <NUM>, <NUM> are positioned one on either side of the first and second hinges <NUM>, <NUM>. A distance between the first and second connection points <NUM>, <NUM> in the closure device <NUM> of <FIG> is about the same as the distance between the connection points <NUM>, <NUM> of the closure device <NUM> of <FIG>.

The first and second hinges <NUM>, <NUM> are spaced from one another circumferentially around the second end <NUM> of the cap body <NUM>. Each of the first and second hinges <NUM>, <NUM> comprises the hinge body <NUM> extending from the second end <NUM> of the cap body <NUM>. Each hinge body <NUM> has the hinged end <NUM> which is hingedly connected to the cap body <NUM>, and the leash end <NUM> which is connected to the respective first leash 76a or the second leash 76b. By hingedly connected is meant that the hinge body <NUM> is moveably connected to the cap body <NUM> in a manner that allows relative axial movement. This is also referred to as a "flip-top" arrangement. The connection between the leash end <NUM> of the hinge body <NUM> and the leash <NUM> is not a hinged connection in certain cases.

The tongue <NUM> comprises the tongue body <NUM> having the free end <NUM> with the lip <NUM> formed thereon. The free end <NUM> of the tongue <NUM> does not protrude further than the rim <NUM> of the cap body <NUM> and is aligned with the rim <NUM> of the cap body <NUM>. Like the closure device <NUM> of <FIG>, the lip <NUM> of the closure device <NUM> of <FIG> extends further than the lip <NUM> of <FIG>. A length of the lip <NUM> of the closure device <NUM> of <FIG> is about <NUM> to about <NUM>, compared to a length of about <NUM> to about <NUM> for the lip <NUM> of the closure device <NUM> of <FIG>.

The TE band <NUM> has a protruding portion <NUM> extending towards the tongue <NUM>. The TE band <NUM> on either side of the protruding portion <NUM> is cut-out to accommodate the leash 76a and the leash 76b. The arrangement of the tongue <NUM> relative to the protruding portion <NUM> defines a gap <NUM> allowing relative movement between the tongue <NUM> and the protruding portion <NUM>. During rotational actuation from the locked mode to the unlocked mode of the closure device <NUM>, a separation between the tongue <NUM> and the protruding portion <NUM> is created, defining therein a foothold opening 90a between the tongue <NUM> and the protruding portion <NUM>. The foothold opening 90a is sized and shaped to allow an un-interfered rotation of the tongue <NUM> relative to the protruding portion <NUM>.

Unlike the closure device <NUM> of <FIG>, in the closure device <NUM> of <FIG>, the first and second leashes 76a, 76b are extendible as will be described below. Furthermore, the retaining mechanism <NUM> further comprises a groove <NUM> defined in an outer surface <NUM> of the cap body <NUM> and extending at least partially circumferentially around the cap body <NUM> and positioned above the tongue <NUM>, and at least one rib <NUM> extending along the TE band <NUM>.

Turning first to the extendible leashes, each leash 76a, 76b is provided with a fold <NUM> in an elongate leash body <NUM>. The fold <NUM> is positioned about midway along the elongate leash body <NUM>. The leashes 76a, 76b, can be considered to have an extendible configuration, by means of the respective fold <NUM>, as will be explained below. In certain cases, the leashes 76a, 76b can be considered to have a resiliently extendible configuration, with the leashes resiliently biased to a non-extended form. This is the case, in certain cases, as long as the extent of deformation of the leashes 76a, 76b are within an elastic range of the leashes 76a, 76b, with no plastic deformation.

The fold <NUM> has a substantially U shaped configuration comprising a first fold arm <NUM> spaced from a second fold arm <NUM>. The first fold arm <NUM> is moveably connected to the second fold arm <NUM>. In other words, the first fold arm <NUM> and the second fold arm <NUM> are moveable relative to one another. The elongate leash body <NUM> has a one piece construction. Hence, the first fold arm <NUM> and the second fold arm <NUM> are one piece also.

At least a portion of the fold <NUM> (i.e. at least a lower end of the U configuration) extends into a correspondingly shaped cut-out <NUM> in the TE band <NUM>. Portions of the leash body 76a and 76b which do not include the fold <NUM> extend generally circumferentially around a portion of the TE band <NUM>, and substantially parallel to the rim <NUM>, when the cap body <NUM> is in the closed configuration <NUM>.

The fold <NUM> has a first fold distance <NUM> and a first fold angle <NUM> between the first fold arm <NUM> and the second fold arm <NUM> when the closure device <NUM> is in the closed configuration <NUM> (<FIG>). This relates to a non-extended configuration of the leashes 76a, 76b. In the open configuration of the closure device <NUM>, the fold <NUM> has a second fold distance <NUM> and a second fold angle <NUM>, which is greater than the first fold distance <NUM> and the first fold angle <NUM> (best seen in <FIG>). This relates to an extended configuration of the leashes 76a, 76b in which a length <NUM> of the respective first leash 76a and the second leash 76b is increased. The length <NUM> of the first leash 76a can be considered as a distance from the connection point <NUM> to the hinge <NUM>. The length <NUM> of the leash 76b can be considered as the length <NUM> from the connection point <NUM> to the hinge <NUM>.

In other words, during opening of the closure device <NUM>, the leashes 76a, 76b move from the non-extended configuration to the extended configuration. A distance between the first fold arm <NUM> and the second fold arm <NUM> is increased which extends the length <NUM> of the leash 76a, 76b connecting the cap body <NUM> to the TE band <NUM>. In the closed configuration <NUM> of the closure device <NUM>, with the leashes 76a, 76b in the non-extended configuration, the first fold angle <NUM> is zero as the first fold arm <NUM> is substantially parallel to the second fold arm <NUM>. In the extended configuration of the leashes 76a, 76b, the fold <NUM> has a "V" configuration instead of a "U" configuration, with the second fold angle <NUM> being greater than zero.

In certain cases, due to elastic properties of the material used to make the container device <NUM> and the configuration of the fold <NUM>, the leashes 76a, 76b, have a certain amount of resilience, allowing the length <NUM> of the leash 76a, 76b to recover once an extending force is released. In the fully open position, the leashes 76a, 76b are stretched and due to an elastic behaviour of the leashes 76a, 76b, they spring back a certain extent hence releasing a clamping force.

The increased length <NUM> of the leashes 76a, 76b during opening increases a potential separation between the lip <NUM> and the TE band <NUM>. This can allow for ease of rotation of the cap body <NUM> during opening, as well as allow for over-rotation which can help for retention in the open position. In considering the amount of the additional extension required on the leashes 76a, 76b, a protrusion distance of the lip <NUM> from the tongue <NUM> can be taken into account to account for clearance required during opening. As will be described further below in relation to <FIG>, the extendible leashes 76a, 76b permit rotation of the cap body <NUM> during opening to a degree further than the stable open configuration, as well as allowing the cap body <NUM> a degree of rotational freedom sufficient to disengage the threaded interface <NUM>, <NUM>.

Turning now to the at least one rib <NUM>, as can be seen from <FIG>, two ribs <NUM> are provided. Each rib <NUM> extends from an outer surface of the protruding portion <NUM> of the TE band to create an embossed portion of the protruding portion <NUM>. The ribs <NUM> are of generally rectangular form and extend across the TE band <NUM> in a direction from the TE band <NUM> to the cap body <NUM>. The two ribs <NUM> are substantially parallel to one another, and spaced from one another. The ribs <NUM> extend from a lower end of the TE band <NUM> and stop short of an upper end of the TE band <NUM>. Although illustrated as being of similar or same configuration, the ribs <NUM> may have a different configuration to one another. Instead of two ribs <NUM>, the TE band may have a single rib. Alternatively, more than two ribs <NUM> may be provided. The ribs <NUM> may have a non-rectangular configuration. The purpose of the ribs is to provide a raised contact surface for the lip <NUM> when the cap body <NUM> is in the open configuration, which in certain cases creates a pre-load effect.

Turning now to the groove <NUM> defined in an outer surface <NUM> of the cap body <NUM>. In certain cases, the groove <NUM> is annular and extends fully around the cap body <NUM>. In other cases, the groove may extend partially around the cap body. The groove <NUM> is arranged to interact with the annular flange <NUM> when the cap body <NUM> is in the fully open position. In this respect, in certain cases, the groove <NUM> has a profile corresponding to a profile of the annular flange <NUM>.

As best seen in <FIG>, when the cap body <NUM> is actuated to the fully open configuration, the lip <NUM> is engaged against the ribs <NUM>, and the annular flange <NUM> is received in the groove <NUM>, which helps to retain the open configuration of the cap body <NUM> relative to the neck <NUM> of the container <NUM>.

As can be seen from <FIG>, a maximum retained opening angle of about <NUM>° can be achieved. Also, the increased leash 76a, 76b and lip <NUM> sizes enables the cap body <NUM> to be spaced further from the neck and to provide a sound signal (e.g. a click) as will be described below.

The functioning of the retaining mechanism <NUM> will be described in more detail with reference to <FIG>. As seen in <FIG>, and <FIG>, twisting of the cap body <NUM> relative to the TE band <NUM> breaks the frangible links <NUM>, and allows the separation of the cap body <NUM> from the TE band <NUM>. Separation and rotation of the cap body <NUM> causes an extension of the leashes 76a, 76b by an opening of the fold <NUM> (increasing distance <NUM> and angle <NUM> between the first fold arm <NUM> and the second fold arm <NUM>). As the cap body <NUM> continues to move towards the fully open position, the TE band is prevented from lifting off the free end of the container by the TE bead <NUM>. When actuating the cap body <NUM> towards the fully open position, movement of the cap body <NUM> away from the open end <NUM> of the container <NUM>, causes an orientation of the lip <NUM> of the tongue <NUM> relative to the protruding portion <NUM> to change.

As best seen in <FIG>, as the cap body <NUM> is brought to an open position which is about <NUM>° from the closed position in certain cases, the lip <NUM> contacts the protruding portion <NUM> at a top end <NUM>. With continued rotation of the cap body <NUM>, a contact point between the lip <NUM> and the protruding portion <NUM> moves downwardly and onto the ribs <NUM> (<FIG>, <FIG>). In other words, as the cap body <NUM> is rotated, the lip <NUM> contacts the ribs <NUM>.

As best seen in <FIG>, when the cap body <NUM> is at an <NUM>° open position, the support ledge <NUM> engages with the knurls <NUM> on the outer surface <NUM> of the cap body. Further rotation of the cap body to more than <NUM>°, causes the groove <NUM> to engage with the support ledge <NUM> (<FIG>). Subsequent release of the cap body <NUM> causes the cap body <NUM> to settle at an <NUM>° open position in a stable manner. At this point, the folds <NUM> are resiliently biased to the non-extended configuration which allows for the retention of the support ledge <NUM> in the groove <NUM>.

As for the closure device <NUM> of <FIG>, the cap body <NUM> hinges about the hinged end <NUM> of the first and second hinges <NUM>, <NUM>, respectively.

An audible sound is produced as the support ledge <NUM> clicks into the groove <NUM>. The audible sound is a click or the like.

As such, it can be said that certain features of the retaining mechanism function to retain a position of the closure device <NUM> during opening and/or closing (such as the first and second leashes 76a, 76b), and to maintain the closure device <NUM> in the fully open position (such as the tongue <NUM>, the lip <NUM>, the protruding portion <NUM>, the ribs <NUM>, and the groove <NUM>).

The closure device <NUM> may differ from that of <FIG>, in that the closure device <NUM> includes the extendible leashes 76a, 76b with the folds <NUM>, but does not include the groove <NUM>, nor the ribs <NUM>. The extendible leashes 76a, 76b provide the increased separation of the cap body <NUM> from the TE band which can facilitate the opening of the closure device <NUM>. The closure device <NUM> may also include the groove <NUM>, which in combination with the extendible leashes 76a, 76b can allow for the positioning of the cap body <NUM> in such a way as to enable engagement of the groove <NUM> with the support ledge <NUM>.

The closure device <NUM> may differ from that of <FIG>, in that the closure device <NUM> includes the ribs <NUM>, but not the extendible leashes 76a, 76b with the folds <NUM>, nor the groove <NUM>. The ribs can provide a preloading effect.

The closure device <NUM> may differ from that of <FIG>, and <FIG>, in that the closure device <NUM> includes the groove <NUM>, but does not include extendible leashes 76a, 76b with the folds <NUM>, nor the ribs <NUM>. The groove can help to retain the cap body <NUM> in the open position.

Referring now <FIG>, in which alternative leashes 76a, 76b of <FIG> are illustrated. The leashes 76a, 76b of <FIG> have a fold <NUM>' which is oriented substantially transversely to the fold <NUM> of <FIG>. As before, the fold <NUM>' has a first fold arm <NUM> and a second fold arm <NUM>. However, the fold <NUM>' is not positioned centrally along the elongate leash body <NUM>, but at an end thereof, with one of the first and second fold arms <NUM>, <NUM> being connected to the TE band <NUM> at the connection point <NUM>, <NUM>.

The closure device <NUM> may be made by injection molding using a mold adapted to form the closure device <NUM>. The mold is positionable, in use, within an injection molding machine (not depicted). Injection molding machines are well known in the art and, as such, will not be described here at any length. A detailed description of these known injection molding machines may be referenced, at least in part, in the following reference books (for example): (i) "<NPL>), (ii) "<NPL>), (iii) "<NPL>) and/or (iv) "<NPL>).

A mold assembly for making the closure device <NUM> comprises a molding cavity defined, at least in part, by a female cavity piece and a male core piece (as well as, optionally, a number of additional molding components) mounted respectively on a cavity plate and a core plate of a mold. The molding cavity is arranged to receive heated molding material for making the closure device (in this example PET pellets) injected under pressure in a molten state.

The cavity plate and the core plate are urged together and are held together by clamp force, the clamp force being sufficient enough to keep the cavity and the core pieces together against the pressure of the injected molding material. The molding cavity has a shape that substantially corresponds to a final cold-state shape of the closure device. The so-injected molding material is then cooled to a temperature sufficient to enable ejection of the so-formed closure device from the mold. When cooled, the molded closure device shrinks inside of the molding cavity and, as such, when the cavity and core plates are urged apart, the molded article can be demolded, i.e. ejected off of the core piece. Ejection structures are known to assist in removing the molded articles from the core halves. Examples of the ejection structures include stripper plates, ejector pins, etc..

The mold assembly is comprised of several plates, each plate housing a component of the mold assembly. More specifically, the mold assembly includes a cavity plate housing one or more cavity inserts and a core plate housing one or more cavity inserts. In certain embodiments, the mold assembly further includes a stripper assembly, which in case of the preform mold, may house one or more neck rings. The mold assembly may further include one or more plates associated with the hot runner, such as a manifold plate, a backing plate and the like.

For the closure device <NUM> illustrated in <FIG>, slides may be provided that are laterally moveable during demolding. Bosses on the slide that outline the molding surfaces for the extensions are near parallel to the central axis. As the leashes 76a, 76b with their respective folds <NUM> are closer to the central axis of movement of the slide, this can make them less prone to deformation, in certain cases, as the slide opens.

Claim 1:
A closure device (<NUM>) for a container (<NUM>), the container having a neck (<NUM>) including an annular flange (<NUM>) along an exterior surface of the neck, the closure device comprising:
a cap body (<NUM>);
a tamper evident (TE) band (<NUM>), the TE band defined such that, when assembled onto the container, the TE band is positioned below the annular flange for cooperation therewith;
a first hinge (<NUM>) and a second hinge (<NUM>) defined on the cap body;
a leash (<NUM>) connected to the TE band, the first hinge and the second hinge; the leash allowing for the cap body to be separated from the TE band during opening, but to remain connected thereto via the leash;
a tongue (<NUM>) protruding from the cap body between the first hinge and the second hinge;
when the cap body is actuated from a closed configuration relative to the neck to a fully open position:
the leash is configured to retain the cap body to the TE band;
an interaction of the tongue and the neck is configured to retain the cap body in the fully open position;
characterized in that
the interaction of the tongue (<NUM>) and the neck (<NUM>) is direct.