Bottle closure device

The present invention relates to a closure device for a bottle, the device comprising a cap and a ferrule prevented from moving relative to each other by tamperproofing means.

FR-A-2 722 478 discloses fitting a bottle neck with a guarantee seal, comprising a capsule having a tamperproofing tongue for preventing the capsule from moving relative to a stopper that closes the bottle. In that device, the capsule is fastened on the neck of the bottle by snap-fastening against a ring, itself snap-fastened on a pourer device fitted to the bottle. Thus, placing that guarantee seal on the neck of a bottle is an operation that is difficult and lengthy, thereby increasing the cost of producing bottles fitted with such a seal.

FR-A-2 085 876 also discloses fitting a bottle neck with a stopper device comprising a closure proper and a finish ring, together with means for preventing movement relative to the neck of the bottle. A tamperproofing ring is provided on the outer peripheral surface of the closure and is received in a locking groove of the ring, so as to prevent the closure from turning relative to the ring. If the closure is forced to turn, the tongue deforms and enables the stopper device to be opened. Deformation of the tongue indicates that the bottle has been opened. Nevertheless, since that tongue is of limited circumferential extent, it can be deformed back again so as to be replaced in the locking groove of the ring, thereby fraudulently masking prior opening of the bottle.

The invention seeks more particularly to remedy these drawbacks by proposing a closure device that is suitable for being put into place on the neck of a bottle in a manner that is easy and fast, and that also includes tamperproofing means that are reliable, and that cannot be put back into place after the device has been opened.

To this end, the invention provides a device for closing a bottle, the device comprising an overmolded cap and ferrule made of two different materials and prevented from moving relative to each other by tamperproofing means, the device further comprising fastener means for fastening to the neck of the bottle, the device being characterized in that a first element selected from the cap and the ferrule includes a peripheral tongue that is placed around substantially the entire outer periphery of the device and that forms said tamperproofing means, said tongue being connected to a body of said first element via tearable means and including patterns that are designed, when the tongue is connected to the body of said first element, to co-operate with complementary patterns formed in the second element selected from the cap and the ferrule.

According to other characteristics of the invention, that are advantageous:

• the material constituting the cap is not adhesive relative to the material constituting the ferrule;
• said tearable means comprise tear serrations;
• the tongue is connected to a body of the ferrule, said body being designed to surrounding the neck of the bottle;
• the tongue covers the cap in part and includes indented patterns in its inner peripheral surface, which patterns are substantially complementary to patterns in relief formed on the outer peripheral surface of the cap;
• said fastener means for fastening on the neck of the bottle comprise a fastener ring and a stopper suitable for being screwed onto said fastener ring, the cap and the stopper comprising complementary means for preventing relative movement;
• said means for preventing the cap from moving relative to the stopper comprise teeth projecting radially from the inner peripheral surface of the cap and substantially complementary to teeth projecting radially from the outer peripheral surface of the stopper;
• the fastener ring includes means for preventing it from moving axially or in rotation relative to the neck of the bottle;
• the fastener ring is connected to a pourer assembly; and
• the overmolded cap and ferrule are made by dual injection of two different synthetic materials.

The characteristics and advantages of the invention appear from the following description of an embodiment of a closure device of the invention, given purely by way of example and made with reference to the accompanying drawings, in which:

FIG. 1 is an elevation view of a closure device in accordance with the invention, prior to being put into place on the neck of a bottle;

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Openable and closable safety container for hazardous materials
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Bottles and jars

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