Security Container
Technical Field
The present invention concerns a security container for breakable containers, in particular glass containers . Especially concerned is a container that is shock reducing/shock damping and that provides increased security during handling.
Background Art
There are a lot of specific containers for e.g. glass bottles known that are shock damping and in¬ tended to enhance the security during transport. However, if the bottle or similar container contains a hazardous good, in particular a liquid, it is also important to protect a person during handling such bottle. Hitherto attempts have been made to protect such person by improv¬ ing the closure of the bottle. However, in case that prior to opening such bottle it slips out of the hands and falls to the ground and breaks, the persons near by and the closer environment (floor, walls etc.) can be in full contact with the dangerous content. In addition said dangerous contents have to be cleaned off, again necessi¬ tating that people come close to it.
Disclosure of the Invention
Hence, it is a general object of the inven¬ tion to provide a security container that reduces the risk of glass breaking, that in the case of a neverthe¬ less occurring glass break would catch the content of the glass container and that provides additional handling se-
curity during emptying of the inner container, especially an inner glass container.
Now, in order to implement these and still further objects of the invention, which will become more readily apparent as the description proceeds, the secu¬ rity container housing a closed inner container is mani¬ fested by the features that said security container and said inner container both have rotation symmetry around a symmetry axis, that said security container is formed of three parts, a body part, a neck part and a cover part, wherein said body part and said neck part are non- detachably connected and said neck part and said cover part are detachably connected, that said neck part con¬ tains a fixing means for fixing said inner container, that all parts have a shock damping mantle with deform- able sections and - at least as far as the body part and the neck part are concerned - with contacting sections, wherein said contacting sections are in contact with said closed inner container and position said closed inner container relative to said security container such that both symmetry axis fall together, and said deformable sections and said contacting sections together ensure that a shock applied to the outer surface of the security container is reduced and distributed upon transfer to the closed inner container.
It is self-evident that the body part, the neck part and the cover part are formed such that they form together, possibly except for the connections be¬ tween them, a fully closed mantle, i.e. the bottom of the body part is integral with the wall of the body part such forming the mantle of the body part, and the top of the cover part is integral with the wall of the cover part such forming the mantle of the cover part. For the neck part, the circumferential wall corresponds to the mantle of the neck part.
Non detachably connected means that the parts cannot be detached by incident, but only by extreme force
or even destruction of the body part and/or the neck part. In any case, the force that has to be applied to disconnect the body part and the neck part is much greater than the force needed to disconnect the neck part and the cover part, such that upon correct manipulation it is only possible to detach the cover part.
The contacting sections are in contact with the closed inner container and keep it well centered within the security container. A little gap between the inner container and the contacting sections in many cases is not detrimental, however, direct contact is much pre¬ ferred for good centering and more homogeneous distribu¬ tion of mechanical forces.
The inner container may be any container ir- respective of its shape, however, a glass container with a cylindrical body and a neck that also has rotation sym¬ metry are preferred. Since the security container is es¬ pecially suitable for the manipulation with or handling of hazardous substances (of particular interest are phar- maceuticals that should not come into contact with healthy people or tissue in the doses contained in the inner container) inner containers for pharmaceuticals are of specific interest. Such containers are often closed by a diaphragm and are often termed ampoules. However they also may be closed by thread covers or snap covers.
The whole security container is made of elas¬ tic material, in particular thermoplastic material. Suit¬ able thermoplastic materials are in particular impact re¬ sistant materials, for example polyethylene (PE), poly- propylene (PP) , polybutylene terephthalate (PBT) , poly¬ ethylene terephthalate (PET), polyamide (PA), etc.
A preferred production method for the parts of the security container comprises injection molding. It is preferred that all three parts are made in one piece each, although it is within the present invention to use inserts providing e.g. the connecting means. Such inserts could e.g. be injection molded thermoplastic ribs, con-
nected to allow easy positioning, or a foamed, shock re¬ ducing insert. If the fixing means of the neck part were formed as insert, it has to be ensured that the mantle of the neck part is designed such that the insert is in- serted from the body part side and fixed against the cover part side. It is, however, much preferred that the neck part is in one piece to ensure that the inner con¬ tainer is properly fixed.
It is also within the present invention to form the cover part and. the neck part together, e.g. by injection molding. In this case, the two parts are sepa¬ rably connected by a predetermined breaking point, a pre¬ determined breaking score or mark etc. Also in such em¬ bodiment inserts can be provided as described above. The body part can have different shapes. For example, its cross section perpendicular to the symmetry axis may have a wave-like form in at least a part of its extension parallel to the symmetry axis, with the waves defining an inner circle and an outer circle and extend- ing between said inner circle and said outer circle, whereby the inner circle corresponds to the outer surface of the inner container. Alternatively, the body part, in cross section perpendicular to the axis, may have a cir¬ cular circumference with bent/inflected ribs extending between the circumference and the outer surface of the inner container. For good shock distribution, said waves or said bent/inflected ribs should extend over a substan¬ tial part of the extension of the circumference in direc¬ tion parallel to the symmetry axis, preferably over the whole extension. In the case of ribs, all ribs may be bent/inflected in the same direction or there may be a symmetry plane between two neighboring ribs .
The number of wave crests defining the outer circle is dependent of the diameter of the inner con- tainer, the shape of the waves and the shock damping de¬ sired. In general, the best shock damping is obtained if the wave crests defining the outer circle are at least as
broad as, and preferably broader than the wave troughs . The same applies for the number of ribs and their actual form (intensity and/or direction of bending) . In any case, the number of waves or ribs usually is at least 5. A suitable embodiment for the bottom of the body part is one that in section parallel to and trough the symmetry axis forms a "W" with rounded corners. Said "W" form does not necessarily have to be present over the whole bottom, but the bottom should have said "W" form at least in regularly distributed sections of said bottom. The central corner of said "W" is directed to and pref¬ erably in contact with the bottom of the inner container.
In an alternative embodiment, the outer sur¬ face of the bottom of the body part and the adjacent wall may, in section parallel to and trough the symmetry axis, form a "U", said "U" having rounded "corners" and a plane or curved bottom (base or horizontal) line. In such em¬ bodiment, the contacting means may be bent ribs extending from said bottom of said body part towards the bottom of said inner container.
The cover part has a top that in section par¬ allel to and trough the symmetry axis may also form a "W" , or rather a "M" with rounded corners as described above for the bottom, whereby here the center of the "M" is directed to and optionally in contact with the closure of the inner container. Since the inner container is al¬ ready well fixed by the body part and the neck part, it is not in all cases necessary that the cover part has a contacting section as provided by the central rounded corner of the "M" . In another embodiment, the cover part in section parallel to and trough the symmetry axis may have the form of a "U" 'or an inverted "U" with the open side directed to the neck part. The top of such cover part may be plane or domed, or the bottom (horizontal, base) line of said "U" may be straight or curved, respec¬ tively.
Since it might be desirable to again close a once opened security container, or for facilitating its original assembling, the cover part may comprise means for facilitating the positioning of the cover part on the neck part, e.g. a continuous or interrupted rim engaging on the neck part, or noses engaging on the neck part. The cover part may also comprise reinforcing means for rein¬ forcing the top and/or the side walls of the cover part in order to optimize the shock reducing abilities. Said reinforcing means optionally and preferably are integral with said positioning means, and much preferable also with the wall.
In order to further enhance the security that only the cover part is removed, said cover part may com- prise means for facilitating the release of the cover part, e.g. a gripping aid for opening a snap connection, or an anti slip surface for opening a thread connection.
In case that the inner container is closed by a thread cap or a snap cap, in order to enhance the secu- rity of the handling person, the cover part might be pro¬ vided with cap releasing means. In case of a thread cap, this. cap releasing means might be a close fitting ring, in case of a snap closure, gripping fingers. Said cap re¬ leasing means preferably also represent connecting sec- tions with shock reducing and distributing ability.
The neck part has a circumferential wall ex¬ tending in direction of and preferably parallel to the symmetry axis. Since it is preferred that the neck part, after removal of the cover part acts as protective aid, said wall forms an interspace with the outer surface of the wall of the inner container, at least in the area close to the cover part. This interspace serves as a catcher for leaking or inadvertently lost content. In ad¬ dition, if the container is intended to be hold in the hand, the neck part can have a diameter larger than the diameter of the body part thereby providing some protec¬ tion for the holding hand. In general, however, and for
shock resistance and also storage room considerations, more or less the same diameter of all parts is preferred. Deviations from an identical outer diameter of two or all parts are often found in the interconnecting areas, where the circumferential wall of one part may overlap the cir¬ cumferential wall of the adjacent part, to improve the connection of said parts and the sealing of the connec¬ tion.
One necessary element of the neck part is the fixing means . Said fixing means may simultaneously act as contacting means and preferably does. Thus, the fixing means preferably has elastic properties, be it for its shape and/or the material it is constructed of.
The fixing means is radially extending from said wall towards said inner container and contacting said inner container. It can extend perpendicular to the symmetry axis or inclined to it, it can be straight or bent. It contacts the outer surface of the inner con¬ tainer at a place where the diameter of said inner con- tainer is diminishing, or where it has just stopped to diminish to guarantee a secure fixing even in case that a smearing liquid leaks of the inner container. The face of the fixing means being in or getting into contact with the outer surface of the inner container preferable is similarly or much preferred identically shaped as said surface such that they snugly fit in order to provide good shock distribution.
The fixing means can e.g. be an interrupted or continuous ring, whereby interrupted or non-continuous or sieve-like fixing means are advantageous for catching leaking substances, since such substances can flow down through such fixing means into the body part.
The fixing means optionally can be reinforced by neck part reinforcing means, e.g. by regularly dis- tributed stiffeners. Such reinforcing means may option¬ ally also reinforce at least part of the circumferential wall, thereby adapting shock reduction and distribution.
The best shock damping shapes and the best number of waves or ribs or fixing means or reinforcing means etc. in dependence of the wall thickness of the se¬ curity container and the elastic properties of the ther- moplastic material used can easily be determined by fall tests well known to the skilled person.
As soon as the inner container is placed in a body part and a neck part, said parts have to be con¬ nected. Thus, these parts are provided with one half of a body part connecting means each allowing to connect the body part to a first end of the neck part, said first end of the neck part being provided with the counter part of said body part connecting means. The neck part, close to its second end, is provided with one half of a cover part connecting means allowing to connect said neck part to said cover part that is provided with the counter part of said cover part connecting means .
Suitable body part connecting means are e.g. snap connections, and thread connections, but also means suitable for being glued, means suitable for being ultra¬ sonic welded, means suitable for forming a shrink connec¬ tion, and suitable combinations thereof. It may e.g. be advantageous for security reasons to use as snap connec¬ tion a double snap connection and to heat the snapping part. The cover part connecting means is preferablyse- lected from the group comprising snap connections, thread connections, join connections (i.e. connections keeping the parts together due to friction) , and predetermined breaking points/predetermined breaking scores or marks etc., with the proviso that the body part connecting means results in the stronger connection than the cover part connecting means.
The body part and/or the neck part may com¬ prise means for sealing the connection between the body part and the neck part, and the neck part and/or the cover part may comprise means for sealing the connection between the neck part and the cover part, such that in
case of a broken inner container no content can leak. Such sealing preferably is made by specificly shaping the interconnecting parts or their edge areas, respectively. How such sealing can be obtained is known to the skilled person.
Since the security container of the present invention is especially suitable for protecting a han¬ dling person from contact with dangerous substances, in particular liquids, the cover part connecting means may be protected against accidental or unauthorized opening by a securing means, such as a seal/plumb.
Also objects of the present invention are the individual parts of the security container as they have been described above, and such a body part connected to such a neck part and comprising an unclosed or with a re¬ movable cap provided inner container.
Also an object of the present invention is the use of the individual parts for producing a security container of the present invention and a production method for such security container, said method compris¬ ing the steps of assembling a body part, a neck part and an unclosed or with a removable cap provided inner con¬ tainer, optionally opening said inner container, filling said inner container, closing said filled inner container and closing said security container by connecting said cover part and said neck part, and optionally adding a seal.
Brief Description of the Drawings
The invention will be better understood and objects other than those set forth above will become ap¬ parent when consideration is given to the following de- tailed description thereof. Such description makes refer¬ ence to the annexed drawings, wherein:
Figure 1 is an elevation of a security con¬ tainer of the present invention in fully assembled form.
Figure 2 is a side view of a security con¬ tainer comprising a glass container, the glass container being shown in side elevation and the security container being shown partially in section and split into its parts .
Figure 3 is a side view of the top of a glass container comprising security container in assembled form, said glass container being shown in side elevation and said security container being shown in section.
Figure 4 is an inclined view on the top of a glass container comprising security container with the security container being partially in section and par- tially in elevation and the glass container being in ele¬ vation.
Figure 5 shows the security container of Fig¬ ure 1 in cross-section perpendicular to the symmetry axis
Figure 6 shows a security container with a circular circumferential wall and bent ribs in cross- section perpendicular to the symmetry axis.
Legend
1 security container
2 inner container, usually of breakable nαate- rial, in particular glass
3 body part
4 neck part
5 cover part
6 fixing means 7 deformable section
8 contacting section
9 inner circle, outer surface of inner con¬ tainer
10 outer circle and/or circumferential wall of body part
11 ribs
12 body part connecting means
13 neck part reinforcing means
14 cover part reinforcing means 15 gripping aid
16 positioning means
17 body part connecting means
18 cover part connecting means
Modes for Carrying out the Invention
The security container 1 of the present in¬ vention in fully assembled form is housing a closed inner container 2. Said security container 1 in general has ro¬ tation symmetry and is formed of three parts, a body part 3, a neck part 4 and a cover part 5. The body part 3 and the neck part 4 are non-detachably connected, while the neck part 4 and the cover part 5 are detachably con- nected, such that upon correct manipulation it is only possible to detach the cover part 5. The neck part 4 com¬ prises a fixing means 6 for fixing said inner container 2 even if the cover part 5 is absent. All three parts have shock damping mantles with deformable sections 7 and - at least as far as the body part and the neck part(and op¬ tionally, in some cases even preferably) also the cover part are concerned - contacting sections 8, said contact¬ ing sections 8 are in contact with said closed inner con¬ tainer 2 , they position said closed inner container 2 relative to said security container 1 such that both sym¬ metry axis fall together, and they keep said inner con¬ tainer 2 well centered within said security container 1. Said deformable sections 7 and said contacting sections 8 together ensure that a shock applied to the outer surface of the security container 1 is reduced and distributed upon transfer to the closed inner container 2.
In one embodiment, shown in Figures 1,3 and 5, the body part, in cross section perpendicular to the symmetry axis-, has a wave-like form. Said wave-like form is present in at least a part, and preferably the whole of the body part ' s extension parallel to the symmetry axis, with the waves defining and extending between an inner circle 9 and an outer circle 10, and the inner cir¬ cle 9 corresponding to the outer surface of the inner container 2 (see in particular Figure 5) . In this de¬ scription, the part of the waves defining the outer cir¬ cle is termed wave crests and the part of the waves de-
fining the inner circle are termed wave troughs. The wave crests are the deformable sections 7 and the top of the wave troughs are the contacting sections 8.
In order to get good shock damping, the wave- like structure is such that the wave crests are at least as broad as the wave troughs, and preferably broader. An embodiment with wave crests that are broader than the wave troughs reduces the risk that a falling container coming into contact with an edge or an uneven surface might be hit outside the most deformable section. In gen¬ eral at least 5 waves are provided.
In another embodiment of the body part 3, shown in Figure 6, the mantle extending parallel to the symmetry axis and having deformable sections 7 and con- tacting sections 8 has a deformable circumferential wall 10 and bent ribs 11 extending from said wall 10 inwards and contacting said outer surface 9 of said inner con¬ tainer 2. Said wall 10 and ribs 11 represent deformable sections 7 and contacting sections 8. Said ribs extend over at least part, preferably the whole extension of said body part in direction parallel to said symmetry axis. The number of ribs in general is at least 3, pref¬ erably at least 5, much preferably between 6 and 18.
While all ribs shown in Figure 6 are bent in the same direction, in a further embodiment, two neigh¬ boring ribs are symmetrical with regard to a plane placed between them.
The bottom of the body part preferably is "W" shaped, although embodiments with bent ribs extending from the bottom of the body part 3 to the bottom of the inner container are also possible. For good shock damp¬ ing, however, it is important that the wall parallel to the symmetry axis and the bottom of the body part are connected via a rounded and not a "sharp" edge. The cen- tral corner of the "W" that is in contact with the bottom of the inner container 2 preferably is also rounded.
On its open end, the body part 3 comprises a part of a body part connecting means 17, e.g. of a double snap connection as shown in Figures 2 and 3. The actual shape of the open end of the body part 3 and the location of the connecting means 17 are not critical as long as the shock damping abilities of the security container are not affected.
While the Figures show the diameter of the interlocking area of the body part to be smaller than the diameter of the interlocking area of the neck part, ex¬ changed sizes and halfs of connecting"means are also pos¬ sible.
The neck part 4 has a wall that except for the interconnecting areas extends parallel to the symme- try axis and distant from the outer surface of the inner container. The space provided between the inner container 2 and the wall of the neck part 4 serves as a catcher for leaking or otherwise lost substance packed in the inner container 2. The neck part 4 comprises a fixing means 6, e.g. an interrupted or continuous ring, extending from the wall towards the outer surface of the inner container 2 and contacting said inner container 2 in an area where the diameter of said inner container is smaller than the diameter of said inner container on the body part side and directly adjacent to said fixing means 6.
The fixing means 6 also serves as contacting section 8, i.e. it assists in reducing and distributing a shock applied to the outer surface of the security con- tainer. Thus, it is preferred that the face of the fixing means 6 coming into contact with the outer surface of the inner container 2 is shaped to closely fit said outer surface.
For adapting the shock damping abilities, neck part reinforcing means 13 can be provided that rein¬ force the fixing means and/or the wall.
Interrupted or non-continuous or sieve-like fixing means 6 are advantageous for catching leaking sub¬ stances, since such substances can flow down through such fixing means 6 into the body part 3. On the end opposite the body part 3, the sec¬ ond end, the neck part 4 has a connecting area provided with one half of a cover part connecting means 18 for es¬ tablishing a detachable connection with the cover part 5. Presently preferred embodiments of cover part connecting means 18 are snap connections or thread con¬ nections or join connections. However, it may be advanta¬ geous to simultaneously produce the cover part and the neck part in one and the same injection mold. In this case, a predetermined breaking point or rather a score, a - mark or similar breaking means is provided as connecting means 18.
Also the interconnecting areas between neck part 4 and cover part 5 can be designed as already de¬ scribed for the interconnecting areas between the neck part 4 and the body part 3.
In one embodiment of a cover part 5, said cover part is similarly shaped as described for the bot¬ tom of the body part 3. Also for the cover part a "W" or rather "M" shaped top with the extensions described for the body part is preferred, whereby the rounded central "corner" of the "M" is in contact with the cap of the in¬ ner container. Such the central corner represents the contacting section 8 and the rounded outside corners act as deformable sections 7. In order to improve the shock damping abili¬ ties, it might be advantageous to provide top reinforcing means 14, reinforcing the wall parallel to the symmetry axis and/or the rounded edges.
Since the cover part shall be removable, in order to facilitate such removal, the cover part 5 may be provided with means for facilitating the release of the cover part 5, e.g. a gripping aid 15, such as a ring or
a tongue, for opening a snap connection, or an anti slip surface for opening a thread connection.
For ensuring that the security container is not opened by accident or by an unauthorized person, it may be provided with a security seal/plumb. Such seals/plumbs are well known by the skilled person from presently sold containers, e.g. comprising pharmaceutical preparations, but also certain foodstuffs.
It may also be desirable that the cover part may be mounted again either if not the whole content of the inner container 2 is used at once, or if the content of the inner container 2 is so dangerous that even after the inner container 2 has been fully emptied, said inner container 2 has still to be separated from accidental contact with the environment due to traces of said con¬ tent that might be present on the surface of said inner container 2. In order to facilitate the mounting of the cover part 5, positioning means 16 may be provided, e.g. noses to engage with the neck part 4. If the inner container 2 is not closed with a diaphragm but with a snap cap or a thread cap, the cover part 5 may furthermore contain cap releasing means for gripping the cap such that upon removing said cover part 5, said cap closing the inner container 2 is also re- moved.
Such embodiment may be advantageous if the inner container 2 has to be closed again and if close contact to said container shall be avoided.
The production of the three parts of the se- curity container is best made by injection molding and thus embodiments that can be injection molded in one piece each part are preferred.
Once the parts are produced, they can be transported as single parts or in partially assembled form to the plant where the final, filled security con¬ tainer 1 is produced. This production can be performed in several sequences. Either the inner container 2 is first
filled and closed and then put between the body part 2 and the neck part 4, said body part 3 and said neck part 4 then are connected and finally the cover part 5 is ap¬ plied. Alternatively the neck part 4 and the cover part 5 can first be connected and then the filled inner con¬ tainer 2 be placed between the body part 3 and the cover part 5 provided neck part 4. It is also possible to first assemble an open or with a removable cap provided inner container 2 with the body part 3 and the neck part 4 and then connect said body part 3 and said neck part 4 to form an assembly, to then fill said inner container 2 of said assembly, to close said inner container 2 and to mount the cover part 5.
While there are shown and described presently preferred embodiments of the invention, it is to be dis¬ tinctly understood that the invention is not limited thereto but may be otherwise variously embodied and prac¬ ticed within the scope of the following claims .