This application is a National Stage Entry entitled to and hereby claims priority under §§365 and 371 to corresponding PCT Application No. PCT/EP2009/065312, filed Nov. 17, 2009, which in turn claims priority to British Application Serial No. GB 0822143.4, filed Dec. 4, 2008. The entire contents of the aforementioned applications are herein expressly incorporated by reference.
The invention relates to packaging for smoking articles, such as cigarettes. In particular the invention relates to packaging smoking articles in a packet comprising a hinge-lid.
Cigarette packs with a lid that is attached by a hinge to one panel of the packet are known. It is a recognised problem for such cigarette packs that they have a tendency not to stay properly closed after the initial opening of the pack. This problem is sometimes referred to as “yawning” or “smiling”. Furthermore, if the pack is held upside down when closed, the lid may open under the weight of the cigarettes inside and hence the cigarettes may fall out of the packet.
The following patent applications provide examples of hinge-lid packets that include a mechanism to counter such yawning: PCT patent application WO 2004/028926, PCT patent application WO 03/039998, U.S. Pat. No. 5,938,018, European patent EP 0894737 and U.S. Pat. No. 5,904,244. Many such existing packs include one or more protruding tabs (“ears”) on the inner frame of the pack. These protrusions engage with the inside wall of the lid (or with a slot on the inside wall) to increase resistance to opening the lid.
It is desirable to provide a hinge-lid pack with improved resistance to opening the lid in order to allow the pack to be closed more securely. It is further desirable to provide a pack which provides an indication to a consumer that the pack is properly closed. It is still further desirable to provide a pack which provides an indication to the consumer when the pack is being opened or closed.
In one embodiment of the invention, a container for smoking articles comprises a container portion, a lid connected by a hinge to the container portion, and a ratchet mechanism to resist opening of the lid.
The ratchet mechanism may be asymmetric in operation, in that opening of the container is harder than closing. The resistance of the container to opening can be made relatively high compared to existing anti-yawn mechanisms. Furthermore, the ratchet mechanism may comprise a plurality of fixed or holding positions to resist opening of the container. Accordingly, even if one position is overcome, the container will not open until the resistance of the remaining ratchet positions has also been overcome. This again allows the (overall) resistance of the container to opening to be made relatively high compared to existing anti-yawn mechanisms. Furthermore, the ratchet mechanism may be robust, in that even if one of the fixed positions is weakened or broken, the remaining positions will still be effective to resist opening of the container.
At least part of the ratchet mechanism may be located on a front panel of the lid opposite the hinge. This location for the ratchet mechanism is generally the furthest from the hinge, and so provides the greatest moment for resisting rotation of the lid (for a given force strength of the mechanism).
The ratchet mechanism may comprise at least one-potentially multiple-paired combinations of a tooth and a ladder of slots. The ladder(s) of slots may be formed on the inside of the lid front panel. Each tooth engages the corresponding ladder of slots. Each ladder of slots defines a series of successive fixed holding positions for the ratchet mechanism to resist opening of the lid. The teeth of the ratchet mechanism may be cut to have a cantilevered arrangement. This then provides resilience for the ratchet mechanism that allows the container to open if sufficient force is applied.
The container may include a second inner lid. At least one tooth may be formed on the second inner lid as an extension of a topmost panel of the second inner lid. Alternatively, the teeth of the ratchet mechanism may be formed on an inner frame of the container.
According to the invention, there is provided a container for smoking articles comprising a container portion, a lid connected by a hinge to the container portion and a ratchet mechanism to resist opening of the lid.
The ratchet mechanism may comprise a first cooperating portion and a second cooperating portion, the first cooperating portion being located on the lid for engaging with a second cooperating portion to resist opening of the lid.
One of the first cooperating portion or second cooperating portion may comprise a ladder of slots and the other of the first cooperating portion or second cooperating portion may comprise at least one tooth configured to engage the ladder of slots.
The at least one tooth may have a cantilevered arrangement.
The first cooperating portion or second cooperating portion may comprise at least one embossed portion and the other of the first cooperating portion or second cooperating portion may comprise a plurality of embossed portions, the first and second cooperating portions being configured to frictionally engage to resist opening of the lid.
The first cooperating portion may be located on an inside face of a front panel of the lid opposite the hinge.
The first cooperating portion may be located on an inside face of a side panel of the lid adjacent to the hinge.
The container may further comprise an inner lid and the second cooperating portion may be located on said inner lid for engaging with the first cooperating portion to resist opening of the lid.
The second cooperating portion may comprise at least one tooth formed as an extension of a topmost panel of the inner lid.
The second cooperating portion may be located on an inner frame of the container portion for engaging with the first cooperating portion to resist opening of the lid.
The container may comprise multiple pairs of the first and second cooperating portions.
The container may comprise a pack configured to contain smoking articles.
The container may comprise a carton configured to contain a plurality of packs for containing smoking articles.
The ratchet mechanism provides a resistance to opening the lid of the container and thus allows the container to be closed more securely. The ratchet mechanism may allow the lid to move by degrees either during opening or during closing of the container. An audible sound may be generated by the cooperating portions upon movement of the lid, thereby providing an indication to a consumer that the lid is being opened or closed. Alternatively or additionally, perceptible vibrations may be generated by the cooperating portions upon movement of the lid, thereby providing an indication to a consumer that the lid is being opened or closed.
Embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings in which:
According to the orientation shown in
Once the outer lid 5 is open, as per the configuration of
In one embodiment, the cooperating portions of the ratchet mechanism comprise at least one tooth 37 and a series of slots 26. The tooth 37 may engage with the series of slots 26 to provide resistance against opening the pack 1. For example, in the example shown in
Each slot 26 may comprise an annex portion 26A, as shown in the expanded portion of
In one embodiment, each ladder arrangement 25 comprises seven slots 26, but it will be appreciated that the number of slots 26 per ladder arrangement 25 may vary from one embodiment of the pack 1 to another. Furthermore, the number of slots 26 may vary from one ladder arrangement 25 to another in a single pack 1. For example, one ladder arrangement 25 may comprise seven slots 26 whilst an adjacent ladder arrangement 25 may have only five slots 26.
In the embodiment shown in
In the example shown in
Each tooth 37 is located in line with a corresponding ladder arrangement 25, so that when the inner lid 27 is closed, and as the outer lid 5 is being closed, each tooth 37 engages the corresponding ladder arrangement 25. In particular, on opening or closing the outer lid 5, each tooth 37 engages in succession two or more of the slots 26 of the corresponding ladder arrangement 25.
More specifically, as the outer lid 5 is closed, the teeth 37 are initially deflected downwards by the inside of the front panel 17. For each ladder arrangement 25, when the first slot 26 is reached, the teeth 37 return to a straight configuration (i.e. substantially parallel with the top panel 35 of the inner lid 27) by extending into the first (lowest) slot in the corresponding ladder arrangement 25. As the lid 5 is closed further, the teeth 37 disengage with the first slots 26 of the ladder arrangements 25 and the bridge portion between the first and second slots 26 of each ladder arrangement 25 deflects each tooth 37 downward again, until the second slot 26 is reached, at which point the teeth 37 extend into the second slot 26 and spring back again to the straight configuration. This procedure continues until the lid 5 is fully closed.
In some embodiments, the teeth 37 may not engage the full length of the corresponding ladder arrangement 25. For example, for the pack 1 shown in
The interaction between the teeth 37 and the ladder arrangements 25 upon opening the outer lid 5 is generally the reverse of that on closing. In particular, on opening the outer lid 5, the teeth 37 are deflected upwards by the movement of the outer lid 5 until a slot 26 is reached, whereupon the teeth 37 return to the straight configuration substantially parallel to the top panel 35 of the inner lid 27. The teeth 37 are then deflected upwards again by the bridge portion between the current slot 26 and the next slot 26, until the next slot 26 is reached, whereupon the teeth 37 return to the horizontal orientation extending into the next slot 26. Eventually, the outer lid 5 is opened to the extent that the teeth 37 disengage completely from the ladder arrangements 25 on the inside of the front panel 17. Once this occurs, opening of the outer lid 5 can be continued without further resistance from the ratchet mechanism.
With the combination of teeth 37 and corresponding ladder arrangements 25 described above, it will be appreciated that closing the outer lid 5 onto the inner lid 27 is generally somewhat easier than (re)opening the outer lid 5 due to the front panel 17 of the outer lid 27 being substantially perpendicular to the teeth 37 when the outer lid 5 is closed. More particularly, when the outer lid 5 is closed, the teeth 37 are fully engaged with slots 26 in the corresponding ladder arrangements 25, thereby providing a high degree of resistance to opening the outer lid 5. This effect helps to overcome any tendency for the pack 1 to “yawn”.
The inner lid 27 comprises panels 29, 35, 31 and 33. The hinge for the inner lid 27 with the container portion 3 is formed along the line between panel 29 and panel 7. Side panels 31 and 33 are cut to separate them from panels 11B and 13B respectively. The tabs attached to panels 31 and 33 are folded and adhered onto panel 35 in the assembled pack 1 to form the shape of the inner lid 27. The teeth 37 are cut out along the boundary of panels 29 and 35. The only internal cuts in the illustrated blank are for the teeth 37, to separate panels 31 and 33 from 11B and 13B respectively, and for forming the slots in the ladder arrangements 25.
The container portion 3 comprises panels 7, 15, 9, 11A, 11B, 13A and 13B. The tabs attached to panels 11A and 13A are folded and adhered onto panel 15 in the assembled pack 1 to form the bottom shape of the container portion 3. Panels 11B and 13B are then folded and adhered onto the outside of panels 11A and 13A respectively to form side walls 11 and 13 for the container portion 3.
The outer lid 5 comprises panels 23, 17A, 17B, 19 and 21. The hinge for the outer lid 5 with the container portion 3 is formed along the line between panel 23 and panel 9. The slots for the ladder arrangements 25 are cut into panel 17B. The tabs attached to panels 19 and 21 are folded and adhered onto panel 17A in the assembled pack 1 to form the shape of the outer lid 5. Panel 17B is then folded back and adhered onto panel 17A to form front panel 17. In the assembled pack 1, the tabs attached to panels 19 and 21 are therefore sandwiched between panels 17A and 17B.
In another embodiment, the ratchet mechanism may comprise teeth 37 formed in one or both of the side panels 31, 33 of the inner lid 27 and a corresponding ladder arrangement 25 of slots 26 formed in one or both of the side panels 19, 21 of the outer lid 5. The teeth 37 and ladder arrangements 25 engage with one another in the same manner as previously described.
As an alternative, or in addition, to the teeth 37 and ladder arrangements 25 described above, the cooperating portions of the ratchet mechanism may comprise a series of embossed portions for providing resistance against opening the pack 1 through frictional contact between them.
In one example, as shown in
Referring to
In addition, any or all of the embossed portions 50, 60, 70, 80 may be used in combination with the teeth 37 and ladder arrangements 25 previously described.
Embossed portions may equally be applied to prevent “yawning” in a conventional cigarette pack. For example, referring to
Referring to
The conventional cigarette pack 3 may also include a ratchet mechanism comprising a tooth 37 and ladder arrangement 25 similar to that described above in relation to
The above described embodiments and examples may be used either singly or in combination to achieve the effects of the invention.
The skilled person will be aware of various modifications that may be made to the embodiments described above. For example, while the ratchet mechanism has been described in conjunction with a pack that opens along a hinge parallel to the longest axis of the pack, in other embodiments the pack may open along a different axis, e.g. as for a more conventional hinged-lid pack, where the hinge line is perpendicular to the longest axis of the pack. Furthermore, while the ratchet mechanism has been described in conjunction with a pack that has an opening inner lid and opening outer lid, in other embodiments there may be just a single opening lid. For example, the teeth of the ratchet mechanism might be provided on the inner frame of an otherwise conventional hinged-lid pack. The ratchet mechanism could also be used with packs with other shapes and dimensions to those described above and shown in the Figures. For example, the ratchet mechanism could be included on packs with rounded or bevelled edges to allow teeth to successively engage slots in a ladder arrangement. In conclusion, the scope of the present invention is defined by the appended claims and their equivalents.
Number | Date | Country | Kind |
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0822143.4 | Dec 2008 | GB | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
---|---|---|---|---|
PCT/EP2009/065312 | 11/17/2009 | WO | 00 | 9/23/2011 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2010/063569 | 6/10/2010 | WO | A |
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Entry |
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Number | Date | Country | |
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20120000801 A1 | Jan 2012 | US |