FIELD OF THE INVENTIONThe present invention concerns a receptacle to contain substances, such as a can for containing and preserving fluid substances, such as for example a can for containing liquid substances, for example liquid foods, such as drinks or suchlike.
BACKGROUND OF THE INVENTIONCans for containing and preserving fluid substances, in particular cans for containing liquid substances, for example liquid foods such as drinks or suchlike, are receptacles made of metal material, generally aluminum, and normally consist of a cylindrical containing body closed by a bottom and an upper lid in which an opening zone is made, in order to remove the liquid.
The opening zone normally comprises a part of the lid surrounded by a line of incision or weakening, so it can be removed in order to access the contents of the can.
It is possible to act on the part of the lid defined by the line of incision, as is known, by means of a removable tab, which can be riveted to the lid so that, once driven to allow to open the can, it remains connected to the lid.
The cylindrical body of the cans, in particular aluminum cans, is normally made by drawing a laminar aluminum element, whereas the lid, already provided with the riveted tab and the opening zone to remove the substance contained in the can, is normally seamed to the end of the cylindrical body opposite the bottom.
One disadvantage of such known cans for substances is that, after the tab has been removed and after the first access to the substance contained therein, the can cannot generally be re-closed, unless other external stoppers or lids are used which are adapted to the upper part of the can.
And indeed there are removable stoppers or other systems on the market which, by positioning on the lid of the can, allow to at least temporarily close the can so as to preserve the substance contained and to use it again later.
However, the stoppers, lids or other systems on the market are often complex and not very efficient, especially with regard to an effective closing of the can and the possibility of using it indefinitely after the first use.
Examples of receptacles, such as cans, provided with stoppers or lids that try to solve this problem are described for example in documents US-A-2003/0080130, U.S. Pat. No. 5,692,633, U.S. Pat. No. 4,880,136, US-A-2005/051553 and U.S. Pat. No. 6,158,608.
Another disadvantage of known cans is that, during transport and storage, the upper part of the lid, and in particular the opening zone, is directly exposed to the outside and, with the action of opening it, it is positioned inside the container, thus coming into contact with the liquid contained therein. This has obvious consequences with regard to hygiene.
One purpose of the present invention is therefore to make a receptacle for containing substances, for example in the form of a can, which is provided with means that allow, after first use, an effective action of reclosing the corresponding access opening or hole, and which allow subsequent and unlimited operations to open and reclose the can.
Another purpose of the present invention is to make a receptacle for containing substances, for example in the form of a can, which is totally recyclable, unlike known receptacles.
Another purpose of the present invention is to make a receptacle for containing substances which can easily be opened and re-closed and which can be produced, in this case in the form of a can, without altering the production process of normal cans for containing and preserving substances, and which therefore has substantive advantages from an economic point of view.
Another purpose of the present invention is to make a receptacle for containing substances which guarantees a satisfactory seal during every re-closing stage after its first use.
Another purpose of the present invention is to make a containing receptacle that allows to overcome the hygiene problems described above.
Another purpose of the present invention is to perfect a method for making a receptacle for containing substances that is effective, quick and economical.
Other limitations and disadvantages of conventional solutions and technologies will be clear to a person of skill after reading the remaining part of the present description with reference to the drawings and the description of the embodiments that follow, although it is clear that the description of the state of the art connected to the present description must not be considered an admission that what is described here is already known from the state of the prior art.
The Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
SUMMARY OF THE INVENTIONThe present invention is set forth and characterized in the independent claims, while the dependent claims describe other characteristics of the invention or variants to the main inventive idea.
In accordance with the above purposes, a receptacle to contain substances comprises a main body, a first lid, positioned on the main body and bearing an opening zone of the receptacle, and an opening element configured to interact with the opening zone so as to make at least a hole on the first lid, to access the contents of the receptacle.
According to one aspect of the invention, the receptacle comprises a second lid mobile with respect to the first lid and provided with at least a hole and at least a protruding portion.
The protruding portion is also made protruding with respect to the surface, which, during use, faces toward the first lid.
The hole and the protruding portion are selectively positionable in correspondence with the access hole of the first lid so that, when the hole of the second lid is positioned in correspondence with the hole of the first lid it allows access to the contents of the receptacle or so that, when the protruding portion of the second lid is positioned in correspondence with the hole of the first lid, the hole to access the contents of the receptacle is blocked by the presence of the protruding portion in the hole. The first lid comprises an edge associated with the main body, and the second lid comprises an edge bent over, and which extends for the entire perimeter extension of the edge of the first lid.
This characteristic, in combination with the presence of the protruding portion, ensures a seal against any dispersion of liquids. In fact, if the receptacle contains liquids, and once the hole has been generated in the first lid, by rotating the second lid it is possible to bring the protruding portion to block the hole achieving a first action of retaining the liquid. If any liquid possibly exits from the hole, it is interposed between the first lid and the second lid, and the overlapping of the edge of the second lid over that of the first lid achieves a second action of retaining the liquid. This makes the combination of the first lid and the second lid extremely efficient to retain the liquids.
In particular, the protruding portion of the second lid is made in low relief with respect to the rest of the second lid, that is, it is made protruding with respect to the surface of the second lid which, during use, faces toward the first lid.
In some embodiments, the receptacle comprises a mechanical joint solid with the first lid and on which the second lid is attached rotatable.
Preferably, the mechanical joint is in a central position with respect to the first lid and the second lid.
Preferably, the second lid, the first lid and the opening element are made completely of metal material, such as aluminum or suchlike.
The present receptacle, therefore, since all its parts can be made of metal material, for example aluminum, is advantageously totally recyclable. In fact, known receptacles contain other materials, such as plastic or suchlike, and are thus not totally recyclable.
The invention also concerns a method for making a receptacle to contain substances, comprising:
making a main body provided at one end with a bottom and at the other end with a free edge,
inserting and attaching a first lid, on the free edge of the main body, said lid comprising an opening zone of the receptacle, a second lid above the first lid and comprising at least an access hole to the opening zone and at least a protruding portion made protruding with respect to the surface that, during use, faces toward the first lid, to close the opening zone, and
associating at least one of either the first lid or the second lid with an opening element configured to act on the opening zone so as to make at least a hole to access the contents of the receptacle.
Preferably the first lid, the second lid and the opening element are reciprocally connected before their insertion and attachment on the edge of the main body.
According to another aspect of the invention, the first lid and the second lid comprise respective edges that are bent over the edge of the main body, the edge of the second lid can be subjected to a bending pressure which is less than the pressure exerted on the edge of the first lid.
The invention also concerns a closing set for receptacles containing substances, comprising a first lid in which there is an opening zone, an opening element configured to interact with the opening zone in order to make at least a hole in the first lid, and a second lid associated with the first lid and provided with at least a hole and at least a protruding portion selectively positionable in correspondence with the hole of the first lid, so that, when the hole of the second lid is positioned in correspondence with the hole of the first lid, the hole of the first lid is kept open, or so that, when the protruding portion of the second lid is positioned in correspondence with the hole of the first lid, the hole of the first lid is blocked by the presence of the protruding portion in the hole.
These and other aspects, characteristics and advantages of the present disclosure will be better understood with reference to the following description, drawings and attached claims. The drawings, which are integrated and form part of the present description, show some forms of embodiment of the present invention, and together with the description, are intended to describe the principles of the disclosure.
The various aspects and characteristics described in the present description can be applied individually where possible. These individual aspects, for example aspects and characteristics described in the attached dependent claims, can be the object of divisional applications.
It is understood that any aspect or characteristic that is discovered, during the patenting process, to be already known, shall not be claimed and shall be the object of a disclaimer.
BRIEF DESCRIPTION OF THE DRAWINGSThese and other characteristics of the present invention will become apparent from the following description of some embodiments, given as a non-restrictive example with reference to the attached drawings wherein:
FIG. 1 is a three-dimensional view of a receptacle to contain substances according to the present invention, for example in the form of a can;
FIG. 2 is a three-dimensional exploded view of the receptacle to contain substances according to the present invention;
FIG. 3 is a first partial view in longitudinal section of a closing set of the receptacle to contain substances;
FIG. 4 is a second partial view in longitudinal section of a closing set of the receptacle to contain substances;
FIG. 5 is a third partial view in longitudinal section of a closing set of the receptacle to contain substances;
FIG. 6 is a section view of an enlarged detail ofFIG. 3 in accordance with a possible variant embodiment;
FIG. 7 is a section view of another enlarged detail ofFIG. 3 in accordance with a possible variant embodiment;
FIGS. 8 and 9 show possible variant embodiments ofFIG. 7.
To facilitate comprehension, the same reference numbers have been used, where possible, to identify identical common elements in the drawings. It is understood that elements and characteristics of one embodiment can conveniently be incorporated into other embodiments without further clarifications.
DETAILED DESCRIPTION OF SOME EMBODIMENTSWe shall now refer in detail to the various embodiments of the present invention, of which one or more examples are shown in the attached drawings. Each example is supplied by way of illustration of the invention and shall not be understood as a limitation thereof. For example, the characteristics shown or described insomuch as they are part of one embodiment can be adopted on, or in association with, other embodiments to produce another embodiment. It is understood that the present invention shall include all such modifications and variants.
Before describing these embodiments, we must also clarify that the present description is not limited in its application to details of the construction and disposition of the components as described in the following description using the attached drawings. The present description can provide other embodiments and can be obtained or executed in various other ways. We must also clarify that the phraseology and terminology used here is for the purposes of description only, and cannot be considered as limitative.
With reference to the attached drawings, areceptacle10 to contain substances according to the present invention comprises amain body11, for example of a substantially cylindrical shape.
Themain body11 has a concave conformation to contain the substances and is defined by alateral wall11aand by a bottom12.
Themain body11 can be made of a metal material, for example aluminum.
Themain body11 can be obtained by drawing a laminar metal element, for example aluminum.
Themain body11 is provided at the top with anopening11b.
Themain body11 comprises at the top anedge14 suitable to accommodate afirst lid13.
In particular, theedge14 defines saidopening11b, and thefirst lid13 is located to totally close theopening11b.
Thefirst lid13 can be provided with apin15.
According to a possible solution, thepin15 is preferably made in a single piece with thefirst lid13, for example by means of plastic deformation of at least part of the latter.
Thefirst lid13 is preferably made of a metal material, for example aluminum.
Anopening zone16 is made on thefirst lid13, delimited or defined by a line ofincision17.
Inside theopening zone16 there is a part oflid18, or portion of lid, that, in the process of opening thereceptacle10, is partly separated or removed from thefirst lid13 along the line ofincision17, for example by means of downward bending, as shown inFIG. 4.
The partial separation or removal of part of thelid18 of theopening zone16 allows to make anaccess hole19 in thefirst lid13 inside themain body11 and therefore to remove the substance contained in thereceptacle10.
According to one aspect of the present invention, asecond lid20 is associated with thefirst lid13. In particular, thesecond lid20 can be positioned overlapping thefirst lid13, and during use, is located externally with respect to the latter.
Thesecond lid20 is selectively rotatable with respect to thefirst lid13, around an axis coinciding with the axis of thepin15.
According to a possible embodiment, thesecond lid20 is provided with aninsertion hole21, in which, during use, thepin15 is positioned. Thesecond lid20 is mobile with respect to thefirst lid13, in particular it can rotate with respect to thepin15 and to thefirst lid13.
Thehole21 can be made preferably in a central position on thesecond lid20.
According to a possible variant embodiment, shown for example inFIG. 6, thesecond lid20 too can be provided with aconstraint pin36 that protrudes, with respect to the flat surface of thesecond lid20, during use, facing toward the outside.
In particular, theconstraint pin36, on the opposite side from that where it protrudes, is provided with acavity37 of a shape and size suitable to be inserted on thepin15 of thefirst lid13.
According to a possible solution, it can be provided that theconstraint pin36 is obtained by plastic deformation.
According to a possible solution, thepin15 and theconstraint pin36 can be obtained together and at the same time, with a single action of plastic deformation, for example by overlapping thefirst lid13 and thesecond lid20, and subsequently carrying out the plastic deformation of both pins.
As described hereafter, thepin15 and theconstraint pin36 can be subsequently deformed, for example riveted, to define a widening of section.
Thesecond lid20 comprises ahole22 positioned, during use, on theopening zone16 of thefirst lid13, so as to allow possible access to the contents of thereceptacle10.
Thehole22 can have the same shape defined on theopening zone16 by the line ofincision17.
Thesecond lid20 comprises a protrudingportion23, made for example in low relief with respect to the rest of thesecond lid20. In particular, it provides that the protrudingportion23 is made protruding with respect to the surface that, during use, faces toward thefirst lid13.
The protrudingportion23 is configured to position and insert itself at least partly in thehole19 of thefirst lid13, so as to close thereceptacle10 after its first use, that is after thehole19 has been generated.
Preferably, the protrudingportion23 has a shape substantially mating with that of thehole19 that will be made in thefirst lid13 when thereceptacle10 is opened.
The protrudingportion23 can be made by drawing a portion of thesecond lid20, so as to obtain a desired rounding.
The protrudingportion23 can be made on thesecond lid20 in a position diametrically opposite with respect to thehole21.
Thesecond lid20 comprises aperipheral edge27 on which a user can act for example to allow the rotation of thesecond lid20 around thefirst lid13.
Theedge27 of thesecond lid20 can be provided with elements or workings that facilitate the grip and the rotation, for example a knurling.
Anopening element24, or tab, is associated with at least one of either thefirst lid13 or thesecond lid20; when theopening element24 is driven it interacts with theopening zone16 so as to make in thefirst lid13 theaccess hole19 to the contents of thereceptacle10.
According to a possible solution, theopening element24 can be associated with apin15 of thefirst lid13. To this end, theopening element24 can be provided with ahole25 in which thepin15 is inserted.
According to a possible variant embodiment, shown for example inFIG. 6, theopening element24 is inserted, with itshole25, both on thepin15 of thefirst lid13 and on theconstraint pin36 of thesecond lid20.
According to a possible variant embodiment, not shown, it can be provided that thefirst lid13 does not have thepin15, and theopening element24 is inserted, with itshole25, only on theconstraint pin36.
Theopening element24 is also provided with agripping part26 on which a user acts to activate theopening element24, as described hereafter.
Theopening element24 is preferably made of metal, for example aluminum.
On the first lid13 a part inlow relief32 can be made, suitable to facilitate the grip of thegripping part26 of theopening element24.
According to a possible embodiment, during the assembly of thereceptacle10, on thefirst lid13 that has apin15, thesecond lid20 and theopening element24 of thereceptacle10 are preferably already positioned.
Thefirst lid13, thesecond lid20 and theopening element24 together define a closing set35 of the receptacle, that is, aset35 which can be coupled with theedge14 of themain body11 and which defines the closing of the substance in thereceptacle10.
The closing set35, comprising thefirst lid13, thesecond lid20 and theopening element24, is then positioned in correspondence with theedge14 of themain body11 and is connected to theedge14, for example by seaming.
Theopening element24 is connected to thefirst lid13 and thesecond lid20 for example by riveting thepin15, so as to obtain a mechanical joint33. This operation is advantageously carried out before the closing set35 is coupled with themain body11.
According to a variant embodiment (FIG. 6), theopening element24 is connected to thefirst lid13 and thesecond lid20 by deformation, for example riveting, of thepin15 and theconstraint pin36 to define the mechanical joint33.
According to a variant, not shown, theopening element24 is constrained only to thesecond lid20 by deforming, for example riveting, theconstraint pin36, which in this case defines the mechanical joint33.
According to embodiments shown inFIGS. 1-6, the mechanical joint33 has the function both of assembling thefirst lid13, thesecond lid20 and theopening element24, and also that of defining a rotation pin around which thesecond lid20 can be made to rotate around thefirst lid13.
The mechanical joint33 also allows to keep thesecond lid20 resting, with respective surfaces, on thefirst lid13, so that during rotation they slide on each other. This further increases the seal against the leakage of liquid of thesecond lid20 with respect to thefirst lid13.
The mechanical joint33 is preferably positioned in a central position with respect to thefirst lid13 and thesecond lid20.
Thefirst lid13 has anedge28 that is bent over and in direct contact on theedge14 of themain body11, for example as shown inFIG. 3. In particular, thebent edge28 of thefirst lid13 extends for the whole longitudinal extension of theedge14 of themain body11.
According to another aspect of the present invention, theedge27 of thesecond lid20 is bent over theedge28 of thefirst lid13 and extends for the whole extension of theedge28 of thefirst lid13.
According to a possible solution of the present invention, shown for example inFIGS. 3-5 and 8-9, theedge27 of thesecond lid20 can have an extension in height which is less than the extension of theedge28 of thefirst lid13, so as to leave an uncoveredsegment29 of theedge28 of thefirst lid13.
Both theedge28 of thefirst lid13 and also theedge27 of thesecond lid20 have a circular development, so as to allow the reciprocal rotation of thefirst lid13 and thesecond lid20.
In fact, bending theedge27 of thesecond lid20 over theedge28 of thefirst lid13 allows to increase the sealing action on the liquid if the openedreceptacle10 is overturned.
According to a possible solution, on the uncoveredsegment29 of theedge28 of the first lid13 a first pressure is applied, for example by means of a first roller30 (FIG. 3), suitable to guarantee an effective seaming of theedge28 on theedge14 of themain body11.
A second pressure is applied, for example by means of asecond roller31, on theedge27 of thesecond lid20, less than the first pressure and suitable to guarantee both the correct positioning of thesecond lid20 on thefirst lid13, and also the possibility of its rotation with respect to saidfirst lid13.
The different extension in height of theedge27 of thesecond lid20 with respect to the extension in height of theedge28 of thefirst lid13 allows to perform the pressure actions on thefirst lid13 and on thesecond lid20 simultaneously, therefore reducing the connection times of the closing set35 on themain body11.
Theopening element24, preferably in a position diametrically opposite thegripping part26, has athrust component34 suitable to detach and/or at least partly remove the part of thelid18 defined by the line ofincision17.
As happens in traditional cans or similar receptacles for containing substances, theopening element24 is gripped by thegripping part26 and rotated upward, as shown inFIG. 4, around the mechanical joint33.
The upward rotation of thegripping part26 deteir lines a pressure of thethrust component34 on the part of thelid18 delimited by the line ofincision17.
The part of thelid18 is then partly removed from thefirst lid13 and is therefore rotated and lowered inside themain body11 of thereceptacle10.
This partial removal of the part of thelid18 thus determines the opening of thehole19 to access the substance contained in thereceptacle10.
Thegripping part26 can be bent downward again, as shown inFIG. 5.
Thehole22 of thesecond lid20 in this step is in a position corresponding to thehole19 of thefirst lid13, therefore it is possible to have normal access to the contents of thereceptacle10.
After the first use of thereceptacle10, in order to once again close thehole19 of thefirst lid13, it is enough to rotate thesecond lid20 for example in the direction of the arrows C inFIG. 2, so that the protrudingportion23 is positioned and at least partly inserted in thehole19, suitably closing thehole19 with a proper seal, as shown inFIG. 5.
Thesecond lid20, as it rotates, can also be subjected to a slight elastic deformation of adaptation, to which thefirst lid13 can also be subjected, so as to allow the protrudingportion23 to move for example from the position ofFIG. 3 to the position ofFIG. 5.
Thesecond lid20, to both close and open thehole19, substantially rotates around the mechanical joint33 so as to remain associated with thefirst lid13 and substantially in contact with thefirst lid13, therefore substantially without lifting or separating from thefirst lid13 or thereceptacle10.
Thanks to the shape in which it is made, the protrudingportion23 can therefore be housed precisely in thehole19 for accessing the substance contained in thereceptacle10.
The protrudingportion23, for example made in low relief, therefore guarantees thehole19 is closed substantially sealed and without the aid of plastic and/or elastomer materials. Thereceptacle10, provided with themain body11,first lid13,second lid20, openingelement24 and mechanical joint33, can therefore be made completely of metal material, for example aluminum, and can be totally recyclable.
Thehole19 for accessing the substance contained in thereceptacle10 can be opened again by further rotating thesecond lid20, so that thehole22 returns into correspondence with thehole19.
In the previous description we referred particularly to areceptacle10 in the form of a can, but the receptacle could also have any form, provided that it has a hole for accessing the substance contained therein, in which the access hole remains open after first use and in which it is necessary to reclose the access hole so as to suitably preserve the substance contained therein, in view of subsequent uses.
The closing set35 of thereceptacle10, comprising thefirst lid13, thesecond lid20 and theopening element24, could also be applied to any other receptacle for containing substances, also of a different shape from that shown and described by way of example.
In fact, the closing set35 can also be made in a separate plant from that where theset35 andmain body11 are subsequently coupled. The particular configuration of theset35 also prevents having to drastically modify the production process of already existing lids and/or the assembly process of theset35 and themain body11. In fact, thereceptacle10 and/or set35 can be made using a few simple adaptations, even to already known production plants.
The particular configuration of theset35 also allows to solve the hygiene problems of known receptacles. In fact, with the present invention, during transport, storage and handling of thereceptacle10, it is possible to position thesecond lid20 so that theopening zone16 of thefirst lid13 is occluded and not accessible from thesecond lid20, even before thefirst lid13 is opened.
When it is required to open thereceptacle10, it will be enough for the user, by rotating thesecond lid20 on thefirst lid13, to take thehole22 of thesecond lid20 into cooperation with theopening zone16 of thefirst lid13 and proceed by driving theopening element24 as described above.
The closing set35 and themain body11 can be made totally of metal material, for example aluminum, so that the present receptacle is advantageously totally recyclable.
It is clear that modifications and/or additions of parts may be made to the receptacle for containing and preserving substances as described heretofore, without departing from the field and scope of the present invention.
According to possible solutions, combinable with all the embodiments described here, theedge27 of thesecond lid20 can extend in height until it completely overlaps the height of theedge28 of thefirst lid13.
In particular, it can be provided that theedge28 of thefirst lid13 has afirst flap38 positioned resting on and integrated with the external surface of theedge14 of themain body11. Theedge27 of thesecond lid20, on the contrary, is provided with asecond flap39 which completely overlaps thefirst flap38 and is bent back over the thickness of the latter. This solution guarantees a seal against the possible passage of liquid substances between thefirst lid13 and thesecond lid20. Furthermore, the bending of thesecond flap39 over the thickness of thefirst flap38 generates a further action of holding thesecond lid20 on thefirst lid13, at the same time allowing thesecond lid20 to rotate with respect to thefirst lid13.
According to a possible solution, shown for example inFIGS. 8 and 9, in theedge14 of themain body11, in theedge28 of thefirst lid13 and in theedge27 of thesecond lid20 there are respectiveradial deformations40 that extend for the whole circumferential development thereof.
According to one embodiment of the invention, theradial deformations40 of theedges14,27,28 extend radially toward the outside (FIG. 8).
According to a variant embodiment of the present invention, theradial deformations40 of theedges14,27,28 extend radially toward the inside (FIG. 9).
According to a possible solution, theradial deformations40 can together define, in theset35, acircumferential throat41 that extends for the whole perimeter development of theedges14,27 and28.
The presence of thecircumferential throat41 has the double effect of mechanically holding thesecond lid20 against thefirst lid13, and of preventing any possible liquid substance that has leaked between thefirst lid13 and thesecond lid20 from coming out through theirrespective edges27 and28.
According to possible solutions, theradial deformations40 of thefirst lid13, thesecond lid20 and themain body11 can be made together, with a single deformation operation, for example by using two counter-rotating rolls.
It is also clear that, although the present invention has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of receptacle for containing and preserving substances, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.