TAMPER EVIDENT DEVICE WITH AN IMPROVED COVER AND FRANGIBLE SEAL

Description

Technical Field

[0001] The present invention broadly relates to a tamper evident device. In particular, this invention is concerned with an improved cover designed to form part of a tamper evident device suitable for use with a slide fastener. This invention also relates to an improved frangible seal adapted to co-operate with the improved cover.

Background of the Invention

[0002] As an example of a prior art security device, reference is made PCT patent application PCT/AU2007/000929. This prior art security device is designed to cover the slider of slide fastener to prevent access to it. The security device also includes a frangible locking element generally referred to as a seal to indicate tampering.

[0003] Document WO2008/025052A1 discloses a frangible seal according to the preamble of claim 1, a security device and a cover.

[0004] It is generally desired in the security device industry to provide a tamper evident device which offers a higher level of security and is less susceptible to being prised than that referred to and described above.

[0005] It is therefore the object of the present invention to provide a security device with an improved cover and corresponding frangible seal which may satisfy the above desire or which may at least provide the public with a useful alternative.

Summary of the Invention

[0006] The object of the invention is achieved with a frangible seal according to claim 1, a security device according to claim 5 and a cover for a security device according to claim 13.

[0007] It is described a security device for a container closable by a slide fastener having a slider, the security device including:

a lower part adapted for attachment to the container;

means for attaching the security device to the slider, directly or indirectly;

an upper part for retaining the attaching means;

receiving means for receiving a frangible seal having a locking member and preventing retraction of the frangible seal except by fracture thereof; and

means to limit access to the attaching means and the receiving means;

wherein the access limiting means includes a locking element adapted to engage the locking member of the frangible seal when the frangible seal is received in the receiving means so as to further prevent retraction of the frangible seal.

[0008] In a preferred embodiment, the access limiting means takes the form of a cover to the security device. It is preferred that the locking element is a protrusion extending downwardly from the cover. Preferably, the protrusion is in the form of a wedge with a bevel and a first locking surface.

[0009] The frangible seal is preferred to include a main body, a pair of flexible legs extending from the main body and joined by the locking member which provides an engaging surface and a second locking surface. Preferably, the engaging surface faces one direction whereas the second locking surface faces another direction. More preferably, the engaging surface is in the form of a ramp. Even more preferably, as the frangible seal is being inserted into the receiving means, the ramp of the frangible seal urges against the bevel of the cover thereby facilitating the pair of legs to flex downward. Even more preferably, once the frangible seal is fully inserted into the receiving means, the pair of legs is capable of flexing back into its original position resulting in the first locking surface abutting the second locking surface. As such, further prevention of retraction of the frangible seal is achieved.

[0010] Preferably, each leg of the frangible seal includes an inclined barb.

[0011] In a preferred embodiment, the cover includes a slot through which the frangible seal is inserted to be received by the receiving means. Preferably, the slot is partially defined by a ledge adapted to stop the main body of the frangible seal from entering the slot. More preferably, the ledge includes a discontinuation configured to enable non-interference of the inclined barbs as the legs enter the slots.

[0012] Preferably, the cover also includes impeding means adapted to prevent insertion of unauthorised or incompatible seals into the slot. More preferably, the impeding means include one or more primary obstacles located at or near the middle of the entrance to the slot. Even more preferably, the impeding means include one or more secondary obstacles located at or near the sides of the entrance to the slot.

[0013] It is preferred that at least one of the legs of the frangible seal includes a groove configured to accommodate the primary obstacle as the leg enters the slot. Preferably, the main body of the frangible seal includes at least one recess adapted to accommodate the secondary obstacle as frangible seal engages the cover.

[0014] In a preferred embodiment, the slider includes a loop or aperture to which the attaching means may be attached. The attaching means are preferred to include a U-shaped clasp having a pair of arms each ending with an annular ring. The cover preferably includes a pair of extensions with corresponding annular rings. The security device is preferred to include a pin adapted to pass through and be received in the aligned annular rings of the U-shaped clasp and cover extensions so as to achieve attachment of the cover to the slider.

[0015] The cover is preferred to include a pair of notches for receiving the respective arms of the U-shaped clasp so as to allow the slider (or zip pull) to rotate as desired.

[0016] It is described a cover for a security device for a container closable by a slide fastener having a slider, the security device including:

a lower part adapted for attachment to the container;

means for attaching the security device to the slider, directly or indirectly;

an upper part for retaining the attaching means; and

receiving means for receiving a frangible seal having a locking member and preventing retraction of the frangible seal except by fracture thereof;

wherein the cover is adapted to limit access to the attaching means and the receiving means, and includes a locking element adapted to engage the locking member of the frangible seal when the frangible seal is received in the receiving means so as to further preventing retraction of the frangible seal.

[0017] Preferably, the upper part defines a chamber and is attached to the lower part, the cover being adapted to cover the chamber to limit access therein.

[0018] It is described a frangible seal for a security device for a container closable by a slide fastener having a slider, the security device including:

a lower part adapted for attachment to the container;

means for attaching the security device to the slider, directly or indirectly;

an upper part for retaining the attaching means;

receiving means for receiving the frangible seal and preventing retraction of the frangible seal except by fracture thereof; and

means to limit access to the attaching means and the receiving means;

wherein the limit accessing means has a locking element whereas the frangible seal has a locking member, the locking element being adapted to engage the locking member when the frangible seal is received in the receiving means so as to further preventing retraction of the frangible seal.

Brief Description of the Drawings

[0019] The invention will now be described in connection with a certain non-limiting embodiment thereof in connection with the following drawings, in which:

Figure 1 is an exploded perspective view of an embodiment of a security device of the first aspect of the invention;

Figure 2 is an perspective view of the assembled security device of Figure 1;

Figure 3 is a plan view of the embodiment;

Figure 4 is a cross-sectional view taken along the line A-A in Figure 3;

Figure 5 is a cross-sectional view taken along the line C-C in Figure 3;

Figure 6 is a plan view from bottom of an embodiment of a cover of the second aspect of the invention;

Figure 7 is a cross-sectional view taken along the line B-B in Figure 6;

Figure 8 is a bottom perspective view of the cover of Figure 6;

Figure 9 is a top perspective view of the cover of Figure 6;

Figure 10 is a front elevation of the cover of Figure 6;

Figure 11 is a bottom perspective view of an embodiment of a frangible seal of the third aspect of the invention;

Figure 12 is a top perspective view of the frangible seal of Figure 11;

Figure 13 is a plan view of the top of the frangible seal of Figure 11;

Figure 14 is a side view of the frangible seal of Figure 11;

Figure 15 is a plan view of the bottom of the frangible seal of Figure 11;

Figure 16 is an exploded perspective view showing the cover of Figure 6 together with a clasp and a slider;

Figure 17 is a perspective view of the cover of Figure 6 connected to the slider via the clasp;

Figure 18 is a plan view of the cover, slider and clasp of Figure 17; and

Figure 19 is a side view of the cover, slider and clasp of Figure 17.

Detailed Description of the Drawings

[0020] Referring to Figures 1 to 5, a security device 10 for a container (not shown) closable by a slide fastener (not shown) having a slider 16 (see Figures 16 to 19) is shown. The security device 10 has a lower part 12 for attachment to the container and attaching means 14 for attachment of the security device 10 to the slider 16.

[0021] Security device 10 also includes upper part in the form of a chamber base 20 including chamber 22, in which is located receiving means in the form of a passageway 24 for receiving a frangible seal 26. The chamber base 20 retains the attaching means which is in the form of a U-shaped clasp 14. With reference to Figures 1 to 5, but in particular to Figure 4, it can be seen that the chamber 22 of the present invention is also covered by an access limiting means in the form of a cover 28. This cover 28 however has a substantially different design and configuration than that described in the abovementioned PCT document. Also, the frangible seal 26 to be received by the passageway 24 has a substantially different design and configuration from that disclosed in the same PCT document.

[0022] Turning to Figures 6 to 8, much like the security device disclosed in PCT/AU2007/000929, the fundamental functions of the cover 28 are to limit access to the U-shaped clasp 14 and the passageway 24. To enhance the integrity of the security device 10, the cover 28 of the present invention has a locking element being a protrusion 30 extending downwardly. As best shown in Figure 7 & 8, the protrusion 30 is in the form of a wedge with a bevel 32 and a flat locking surface 34.

[0023] Referring to Figures 11 to 15, the frangible seal 26 of the present invention has a main body 36 and a pair of flexible legs 38 & 40 extending from the main body 36. Each leg 38, 40 of the frangible seal 26 has an inclined barb 44, 46. The legs 38 & 40 are joined by a locking member 42. The locking member 42 provides an engaging surface in the form of a ramp 48 and a second locking surface 50. As best shown in Figures 11, 12, 13 & 15, the ramp 48 faces one direction whereas the second locking surface 50 faces another direction. As the frangible seal 26 is being inserted into the passageway 24, the ramp 48 of the frangible seal 26 urges against the bevel 32 of the cover 28 thereby resulting in the pair of legs 38 & 40 to flex downward to allow the frangible seal to advance.

[0024] Once the frangible seal 26 is fully inserted into the passageway 24, the pair of legs 38 & 40 is cleared of the locking member 42 being capable of flexing back into its original position resulting in the first locking surface 32 abutting the second locking surface 50. As such, the seal 26 is interlocked with the cover 28 and hence further prevention of retraction of the frangible seal 26 is achieved. This is significant as this design enhances secured locking of the frangible seal 26 with two mechanisms.

[0025] Referring to Figures 9 and 10, the cover 28 has a slot 52 through which the frangible seal 26 is inserted to be received by the passageway 24. The slot 52 is partially defined by two ledges 54 & 56 configured to stop the main body 36 of the frangible seal 28 from entering the slot 52. Provided between the ledges 54 & 56 is a gap 58 configured to enable non-interference of the inclined barbs 44, 46 as the legs 38 & 40 enter the slot 52.

[0026] As best shown in Figures 9 and 10, the cover 28 also includes impeding means configured to prevent insertion of unauthorised or incompatible seals (such as the ones for the security device disclosed in PCT/AU2007/000929) into the slot 52. The impeding means take the form of primary obstacles being ribs 60 located at or near the middle of the entrance 62 to the slot 52. The impeding means also include secondary obstacles in the form of large ribs 64 located at or near the sides of the entrance 62 to the slot 52.

[0027] As best shown in Figures 11 and 15, each of the legs 38 & 40 of the frangible seal 26 has a groove 66 configured to accommodate the primary obstacle 64 as the leg 38, 40 enters the slot 52. Once the seal 26 is fully inserted, the ribs 60 are nested in the respective recesses 84 & 86 provided in the main body 36 of the seal 26, as illustrated in Figure 5. The main body 36 of the frangible seal 26 has a pair of recesses 68 provided to accommodate the secondary obstacles which are in the form of large ribs 64 as frangible seal 26 engages the cover 28.

[0028] Turning now to Figures 16 to 19, the slider 16 has a loop or aperture 70 to which the attachment means being the U-shaped clasp 14 is attached. The U-shaped clasp 14 has a pair of arms 14 each ending with an annular ring 74. The cover 28 has a pair of extensions 76 with corresponding annular rings 78. A pin 80 (see Figure 16) is provided to pass through and be received in each of the aligned annular rings 74 & 78 of the U-shaped clasp 14 and cover extensions 76 so as to achieve attachment of the cover 28 to the slider 16. The configuration of the U-shaped clasp 14 offers the advantage of being able to be passed through and hooked around the loop or aperture 70 of the slider 16 during assembly. This is significant as the bridge 82 of the slider is configured such that a substantially closed loop is created by the bridge 82 for a high level of security. It is therefore important for the clasp 14 to have an open end to facilitate installation. Fastening between the clasp 14 and pin 80 is achieved via interference or friction fit.

[0029] As best shown in Figures 6 and 16, the cover 28 has a pair of notches 78 for receiving the respective arms 72 of the U-shaped clasp 14 so as to allow the slider 16 (or zip pull) to rotate as desired.

[0030] Now that a preferred embodiment of the present invention has been described in some detail, it will be apparent to a skilled person in the art that the security device, cover and frangible seal of the present invention may offer at least the following advantages:

1. it enables enhanced security with two locking mechanisms preventing the seal from being removed without breaking the main body indicating tampering;

2. the cover is retrofittable into old security devices to replace the original or a pre-existing cover which enables use of most of the original parts and hence saves cost; and

3. it is capable of preventing use of unauthorised and incompatible old seals.

[0031] Those skilled in the art will appreciate that the invention described herein is susceptible to variations and modifications other than those specifically described. All such variations and modifications are to be considered within the scope and spirit of the present invention the nature of which is to be determined from the foregoing description.

Claims

1. A frangible seal (26) for inserting into a security device (10), the frangible seal having:

a. a main body (36);

b. a pair of flexible legs (38, 40) extending from the main body (36); and,

c. a locking member (42) joining the pair of flexible legs (38, 40);

characterised in that the locking member provides an engaging surface in the form of a ramp (48) and a second locking surface (50), the ramp (48) facing one direction and the second locking surface (50) facing another direction, the locking member (42) being configured to engage with a protrusion (30) extending from a cover (28) of the security device (10), providing a locking mechanism to impede retraction of the frangible seal (26) from the security device (10) except by fracture thereof.

2. The frangible seal (26) of claim 1, wherein the pair of legs (38, 40) are configured to flex from an original position to a flexed position during insertion of the seal into the security device.

3. The frangible seal (26) of claim 2, wherein the pair of legs (38, 40) are configured to flex from the flexed position to the original position after full insertion of the seal in the security device.

4. The frangible seal (26) of claim 2, wherein each of the pair of legs (38, 40) includes an inclined barb (44, 46).

5. A security device (10), for a container closable by a slide fastener having a slider, the security device (10) being configured to receive the frangible seal (26) of any one of claims 1 to 4, the security device (10) including:

a. a lower part (12) adapted for attachment to the container;

b. attaching means (14) for attaching the security device (10) to the slider, directly or indirectly;

c. an upper part (20) for retaining the attaching means (14);

d. a receiving means (24) for receiving the frangible seal (26); and,

e. a cover limiting access to the attaching means and the receiving means, the cover including a locking element in the form of a protrusion adapted to engage the locking member of the frangible seal when the frangible seal is received in the receiving means so as to further prevent retraction of the frangible seal.

6. The security device (10) of claim 5, wherein the protrusion (30) is in the form of a wedge with a bevel (32) and a first locking surface (34).

7. The security device (10) of claim 6, wherein the bevel (32) is adapted to contact the ramp (28) of the frangible seal (26) when the frangible seal (26) is inserted in the security device (10).

8. The security device of claim 6, wherein the first locking surface (34) is adapted to abut the second locking surface (50) when the frangible seal (26) is fully inserted in the device.

9. The security device (10) of any one of claims 5 to 8, wherein the cover includes a slot (52) for the frangible seal (26), the slot (52) being partially defined by a ledge (54, 56) adapted to stop the main body (36) of the frangible seal (26) from entering the slot (52).

10. The security device of claim 9, wherein the ledge (54, 56) includes a discontinuation to accommodate passage of the inclined barbs (44, 46).

11. The security device of any one of claims 9 to 10, wherein the cover (26) includes an impeding means (60, 64) adapted to prevent insertion of unauthorised or incompatible seals into the slot (52).

12. The security device of claim 11, wherein the impeding means includes at least one primary obstacle (60) located at or near the entrance (62) to the slot (52), and the main body (36) of the frangible seal (26) includes at least one recess (84, 86) adapted to accommodate the at least one obstacle (60) as the frangible seal (26) engages the cover (28).

13. A cover (28) for a security device (10), the cover (28) having a protrusion (30) extending therefrom, the protrusion (30) being configured to engage with the locking member (42) of the frangible seal (26) of any one of claims 1 to 4, the frangible seal (26) being configured to be inserted into the security device (10), wherein engagement of the protrusion and the locking member provides a locking mechanism to impede retraction of the frangible seal (26) from the security device (10) except by fracture thereof.

14. The cover of claim 13, wherein the security device is the security device of any one of claims 5 to 12.

Ansprüche

1. Zerbrechliches Siegel (26) zum Einsetzen in eine Sicherheitsvorrichtung (10), wobei das zerbrechliche Siegel Folgendes umfasst:

a. einen Hauptkörper (36);

b. ein Paar biegsame Schenkel (38, 40), die sich von dem Hauptkörper (36) erstrecken; und

c. ein Verriegelungselement (42), das das Paar biegsame Schenkel (38, 40) verbindet;

dadurch gekennzeichnet, dass das Verriegelungselement eine Eingriffsfläche in Form einer schiefen Ebene (48) und eine zweite Verriegelungsfläche (50) bereitstellt, wobei die schiefe Ebene (48) in eine Richtung weist und die zweite Verriegelungsfläche (50) in eine andere Richtung weist, wobei das Verriegelungselement (42) dazu konfiguriert ist, mit einem sich von einer Abdeckung (28) der Sicherheitsvorrichtung (10) erstreckenden Vorsprung (30) in Eingriff zu gelangen, sodass ein Verriegelungsmechanismus bereitgestellt wird, um das Herausziehen des zerbrechlichen Siegels (26) aus der Sicherheitsvorrichtung (10), außer durch Zerbrechen derselben, zu verhindern.

2. Zerbrechliches Siegel (26) nach Anspruch 1, wobei das Paar Schenkel (38, 40) dazu konfiguriert ist, sich während des Einsteckes des Siegels in die Sicherheitsvorrichtung aus einer ursprünglichen Stellung in eine gebogene Stellung zu biegen.

3. Zerbrechliches Siegel (26) nach Anspruch 2, wobei das Paar Schenkel (38, 40) dazu konfiguriert ist, sich nach dem vollständigen Einstecken des Siegels in die Sicherheitsvorrichtung aus der gebogenen Stellung in die ursprüngliche Stellung zu biegen.

4. Zerbrechliches Siegel (26) nach Anspruch 2, wobei jeder des Paars Schenkel (38, 40) einen schrägen Widerhaken (44, 46) umfasst.

5. Sicherheitsvorrichtung (10) für einen Behälter, der mit einem Schiebeverschluss mit einem Schieber verschließbar ist, wobei die Sicherheitsvorrichtung (10) dazu konfiguriert ist, das zerbrechliche Siegel (26) nach einem der Ansprüche 1 bis 4 aufzunehmen, wobei die Sicherheitsvorrichtung (10) Folgendes umfasst:

a. einen unteren Teil (12), der zum Befestigen an dem Behälter angepasst ist;

b. Befestigungsmittel (14) zum direkten oder indirekten Befestigen der Sicherheitsvorrichtung (10) an dem Schieber;

c. einen oberen Teil (20) zum Halten des Befestigungsmittels (14);

d. ein Aufnahmemittel (24) zum Aufnehmen des zerbrechlichen Siegels (26); und

e. eine Abdeckung, die den Zugang zu dem Befestigungsmittel und dem Aufnahmemittel einschränkt, wobei die Abdeckung ein Verriegelungselement in Form eines Vorsprungs umfasst, der dazu angepasst ist, mit dem Verriegelungselement des zerbrechlichen Siegels in Eingriff zu gelangen, wenn das zerbrechliche Siegel in dem Aufnahmemittel aufgenommen ist, um das Herausziehen des zerbrechlichen Siegels weiter zu verhindern.

6. Sicherheitsvorrichtung (10) nach Anspruch 5, wobei der Vorsprung (30) die Form eines Keils mit einer Schräge (32) und einer ersten Verriegelungsfläche (34) aufweist.

7. Sicherheitsvorrichtung (10) nach Anspruch 6, wobei die Schräge (32) dazu angepasst ist, mit der schiefen Ebene (28) des zerbrechlichen Siegels (26) in Kontakt zu gelangen, wenn das zerbrechliche Siegel (26) in die Sicherheitsvorrichtung (10) eingesteckt wird.

8. Sicherheitsvorrichtung nach Anspruch 6, wobei die erste Verriegelungsfläche (34) dazu angepasst ist, an der zweiten Verriegelungsfläche (50) anzuliegen, wenn das zerbrechliche Siegel (26) ganz in die Vorrichtung eingesteckt ist.

9. Sicherheitsvorrichtung (10) nach einem der Ansprüche 5 bis 8, wobei die Abdeckung einen Schlitz (52) für das zerbrechliche Siegel (26) umfasst, wobei der Schlitz (52) teilweise von einem Absatz (54, 56) definiert wird, der dazu angepasst ist, den Hauptkörper (36) des zerbrechlichen Siegels (26) daran zu hindern, in den Schlitz (52) einzudringen.

10. Sicherheitsvorrichtung nach Anspruch 9, wobei der Absatz (54, 56) eine Diskontinuität umfasst, um das Hindurchgelangen der schrägen Widerhaken (44, 46) zu ermöglichen.

11. Sicherheitsvorrichtung nach einem der Ansprüche 9 bis 10, wobei die Abdeckung (26) ein Verhinderungsmittel (60, 64) umfasst, das dazu angepasst ist, das Einstecken unzulässiger oder inkompatibler Siegel in den Schlitz (52) zu verhindern.

12. Sicherheitsvorrichtung nach Anspruch 11, wobei das Verhinderungsmittel mindestens ein Haupthindernis (60) umfasst, das sich an oder nah bei dem Eingang (62) zu dem Schlitz (52) befindet, und der Hauptkörper (36) des zerbrechlichen Siegels (26) mindestens eine Aussparung (84, 86) umfasst, die dazu angepasst ist, das mindestens eine Hindernis (60) aufzunehmen, wenn das zerbrechliche Siegel (26) mit der Abdeckung (28) in Eingriff gelangt.

13. Abdeckung (28) für eine Sicherheitsvorrichtung (10), wobei die Abdeckung (28) einen Vorsprung (30) aufweist, der sich davon erstreckt, wobei der Vorsprung (30) dazu konfiguriert ist, mit dem Verriegelungselement (42) des zerbrechlichen Siegels (26) nach einem der Ansprüche 1 bis 4 in Eingriff zu gelangen, wobei das zerbrechliche Siegel (26) dazu konfiguriert ist, in die Sicherheitsvorrichtung (10) eingesteckt zu werden, wobei der Eingriff des Vorsprungs und des Verriegelungselements einen Verriegelungsmechanismus bereitstellt, um das Herausziehen des zerbrechlichen Siegels (26) aus der Sicherheitsvorrichtung (10) außer durch Zerbrechen desselben, zu verhindern.

14. Abdeckung nach Anspruch 13, wobei es sich bei der Sicherheitsvorrichtung um die Sicherheitsvorrichtung nach einem der Ansprüche 5 bis 12 handelt.

Revendications

1. Un joint cassable (26) pour insertion dans un dispositif de sécurité (10), le joint cassable comprenant :

a. un corps principal (36) ;

b. une paire de pieds pliables (38, 40) s'étendant depuis le corps principal (36) ; et,

c. un élément de verrouillage (42) liant la paire de pieds pliables (38, 40) ;

caractérisé en ce que l'élément de verrouillage fournit une surface d'engagement sous forme de rampe (48) et une seconde surface de verrouillage (50), la rampe (48) étant orientée dans une direction et la seconde surface de verrouillage (50) étant orientée dans une autre direction, l'élément de verrouillage (42) étant configuré de façon à s'enclencher dans une protrusion (30) s'étendant depuis un couvercle (28) du dispositif de sécurité (10), fournissant un mécanisme de verrouillage pour prévenir la rétraction du joint cassable (26) hors du dispositif de sécurité (10) sauf par rupture de ce dernier.

2. Le joint cassable (26) selon la revendication 1, dans lequel la paire de pieds (38, 40) est configurée pour se plier depuis une position originale jusqu'à une position repliée durant l'insertion du joint dans le dispositif de sécurité.

3. Le joint cassable (26) selon la revendication 2, dans lequel la paire de pieds (38, 40) est configurée pour se déplier depuis la position repliée jusqu'à sa position originale après l'insertion intégrale du joint dans le dispositif de sécurité.

4. Le joint cassable (26) selon la revendication 2, dans lequel chaque paire de pieds (38, 40) comprend un ardillon incliné (44, 46).

5. Un dispositif de sécurité (10), pour un contenant pouvant être fermé au moyen d'un élément de fixation coulissant comportant une glissière, le dispositif de sécurité (10) étant conçu pour héberger le joint cassable (26) de l'une des revendications 1 à 4, le dispositif de sécurité (10) comprenant :

a. une partie inférieure (12) conçue pour être fixée au contenant ;

b. des moyens de fixation (14) permettant de fixer le dispositif de sécurité (10) à la glissière, directement ou indirectement ;

c. une partie supérieure (20) permettant de retenir les moyens de fixation (14) ;

d. un moyen de réception (24) permettant de recevoir le joint cassable (26) ; et,

e. un couvercle limitant l'accès aux moyens de fixation et aux moyens de réception, le couvercle comprenant un élément de verrouillage sous la forme d'une protrusion conçue de façon à s'engager dans l'élément de verrouillage du joint cassable lorsque le joint cassable est hébergé dans les moyens de réception, de façon à accroître la prévention de la rétraction du joint cassable.

6. Le dispositif de sécurité (10) selon la revendication 5, dans lequel la protrusion (30) a la forme d'un coin biseauté (32) et d'une première surface de verrouillage (34).

7. Le dispositif de sécurité (10) selon la revendication 6, dans lequel le biseau (32) est conçu pour entrer en contact avec la rampe (28) du joint cassable (26) lorsque le joint cassable (26) est inséré dans le dispositif de sécurité (10).

8. Le dispositif de sécurité selon la revendication 6, dans lequel la première surface de verrouillage (34) est conçu pour s'appuyer contre la seconde surface de verrouillage (50) lorsque le joint cassable (26) est totalement inséré dans le dispositif.

9. Le dispositif de sécurité (10) selon l'une des revendications 5 à 8, dans lequel le couvercle comprend une fente (52) pour le joint cassable (26), la fente (52) étant partiellement définie par un rebord (54, 56) conçu pour empêcher le corps principal (36) du joint cassable (26) de pénétrer dans la fente (52).

10. Le dispositif de sécurité selon la revendication 9, dans lequel le rebord (54, 56) comprend une interruption pour laisser passer les ardillons inclinés (44, 46).

11. Le dispositif de sécurité selon l'une des revendications 9 à 10, dans lequel le couvercle (26) comprend un moyen constituant une entrave (60, 64) conçu pour prévenir l'insertion de joints non autorisés ou incompatibles dans la fente (52).

12. Le dispositif de sécurité selon la revendication 11, dans lequel le moyen constituant une entrave comprend au moins un obstacle primaire (60) situé à ou à proximité de l'entrée (62) de la fente (52), et le corps principal (36) du joint cassable (26) comprend au moins un évidement (84, 86) conçu pour recevoir le ou les obstacles (60) lorsque le joint cassable (26) s'engage dans le couvercle (28).

13. Un couvercle (28) pour un dispositif de sécurité (10), le couvercle (28) étant muni d'une protrusion (30) s'étendant de ce dernier, la protrusion (30) étant configurée pour s'engager dans l'élément de verrouillage (42) du joint cassable (26) de l'une des revendications 1 à 4, le joint cassable (26) étant configuré pour s'insérer dans le dispositif de sécurité (10), dans lequel l'enclenchement de la protrusion et de l'élément de verrouillage fournit un mécanisme de verrouillage prévenant la rétraction du joint cassable (26) hors du dispositif de sécurité (10) sauf par rupture de celui-ci.

14. Le couvercle selon la revendication 13, dans lequel le dispositif de sécurité est le dispositif de sécurité de l'une des revendications 5 à 12.

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