PROTECTIVE CASE FOR AT LEAST TWO CREDIT CARDS OR SIMILAR This invention relates to a protective case for several credit cards or similar. A credit card or similar consists of a plate of a plastic material with standardised dimensions, namely 85.60 x 53.98 mm, with characters embossed into it, and generally including a magnetic stripe and/or a smart chip. Due to its relative flexibility and the presence of a magnetic stripe and/or a smart chip, it is preferable to keep the card in a protected place, so that it is not damaged and remains functional. Accordingly a credit card or similar is usually kept in a card holder or wallet, which means having to carry a card holder or wallet, which is not always possible. To overcome this drawback, rigid protectives cases have been proposed for a credit card or similar, the simplest of them consisting of a flat envelope, comprising two parallel walls between which there is provided a space intended to accommodate the card to be protected, and provided at one end with an opening through which said card can be inserted or extracted, one of said walls comprising an opening through which the user can push said card with his finger in order to extract it. Such a case is described for example in patent EP 0 677 257. Cases are also known comprising two parts, one of which contains the card and slides inside the other like a drawer. Such a case is described for example in patent FR 2 893 233. Although the cases proposed in said patents are capable of protecting one card, they are not designed to protect several cards, whereas it is common to possess more than one. However, cases do exist that are capable of storing several cards, and they each consist of a box with a housing in which the cards are stacked, which can lead to difficulties extracting one or other of the cards.
2 To overcome this drawback, cases have been proposed that may contain more than one card, as is the case for example of the cases described in patents WO 96/18320 and EP 0 287 532. In patent WO 96/18320, the case can contain two cards, which are extracted manually through an opening provided in each of the side walls of the case, in a similar way to what is described in patent EP 0 677 257. The aim of a case being mainly to protect the cards, the fact that it includes one or more openings means that it cannot entirely fulfil its function. In patent EP 0 287 532, a case is proposed in which several cards are stacked, and which has at the back a mobile lever, which can be operated from the outside, and whose part intended to be in contact with the cards is stepped, so that in a single movement all the cards emerge in a tiered array. Once again, the cards can be damaged as they are in contact with one another. Moreover, after a middle card is removed, it is not easy to put it back in its place, as this requires the cards on either side of its location to be prised apart. Furthermore, the stacking of the cards raises the problem of the physical integrity of the cards it contains. Indeed, generally, to hold the cards in their housing, it is necessary to exert some pressure in the direction of the thickness of the cards, and in actual fact this involves pressing on the raised elements formed by embossing, with the disadvantage that eventually this risks damaging the cards. Whatever the existing type of protective case for credit cards or similar, none of them allows the storage of several cards whilst also allowing easy access thereto and being of simple design. The aim of this invention is to propose a protective case for several credit cards or similar that will overcome the different disadvantages mentioned above, in particular one that is of simple design, and with no risk of damage to the cards. The protective case for at least two credit cards or similar according to the invention has the shape of a flat 3 envelope, comprising two parallel walls between which one or a plurality of spaces are formed, intended to accommodate the cards to be protected, and provided at one end with an opening allowing the insertion or extraction of a card, and it is characterised essentially in that it comprises at least two parts each comprising one of said two parallel walls, and in that one of said at least two parts is slidably mounted on the other, and in that each of said at least two parts is shaped to accommodate and hold a card, and to this end comprises a housing into which a card can slide, said housing comprising on the one hand a reversible means for holding the card, in order to secure same, and on the other hand having an opening by which said card can be extracted by sliding, after sliding the part containing said card. In practice, the user slides the two parts of the case over each other, which gives him access simultaneously to both cards, so that he can then choose to slide out of its housing the card of his choice. According to an additional characteristic of the protective case according to the invention, the at least two parts are shaped to accommodate and hold one of the cards so that it does not come into contact with the other part or another card, and to this end each of said at least two parts comprises, on the side opposite the other part a housing which has on the one hand the transverse dimensions allowing a card to be accommodated with a certain tolerance, and on the other hand on the two edges perpendicular to that situated on the side of said end provided with an opening, lips able to cover the edges of said card so as to hold said card in place and allow it to slide, and which are of a depth substantially greater than that of the raised elements formed by embossing on said card, and also, a reversible means for holding said card, enabling it to be secured in said housing. According to an additional characteristic of the protective case according to the invention, it comprises three 4 parts, namely a middle part on which each of the two other parts, which are shaped each to contain one card, can slide. According to an additional characteristic of the protective case according to the invention, the middle part comprises a housing on each of its sides, in order to be able each to contain one card. According to an additional characteristic of the protective case according to the invention, the sliding of one part in relation to the other is achieved by means of a sliding connection, one of the parts having two rails or similar, each engaged in one of two grooves in the other part. The rails or similar may be manufactured into the parts, but they may also be added on. According to an additional characteristic of the protective case according to the invention, the sliding of one part in relation to the other is achieved by means of a sliding connection, one of the parts having two grooves, each arranged opposite one of the two grooves in the other part, whilst intermediate connecting parts, such as balls or rollers, are engaged between said two parts, in two grooves facing each other. It will be noted that it is possible to combine the two aforementioned sliding connections, namely a rail and groove arrangement combined with a sliding connection with balls or rollers, the latter then serving essentially to maintain the gap between the two parts, in order to protect the card. According to an additional characteristic of the protective case according to the invention, for the purpose of sliding one part over the other, one of the two parts has at the sides ridges intended to be slotted, with the possibility of longitudinal sliding, into grooves in the other part, each of said grooves being crossed transversely by a pin or similar, able to be engaged in a longitudinal oblong opening in the ridge. According to an additional characteristic of the protective case according to the invention, it comprises means 5 for indexing the different positions of one part in relation to another. These indexing means may consist in magnetic devices. According to an additional characteristic of the protective case according to the invention, it comprises means for assisting the sliding of one part in relation to another part. Such assistance means may consist in springs arranged to facilitate the sliding either in the direction of opening, combined with reversible means of blocking in the closed position, necessary to avoid accidental opening, or in the direction of closing. According to an additional characteristic of the protective case according to the invention, it comprises mobile means of ejecting the card, whose mobility is interlocked with the sliding of one part in relation to another. According to an additional characteristic of the protective case according to the invention, the housing for a card comprises on the side opposite that dedicated to the extraction of the card, a lever against which said card rests, pivotably mounted on the part comprising said housing, and able to be pivotably driven by another part during sliding. The protective case according to the invention may be made of different materials, both plastic and metal. It has nevertheless been designed above all to be made of metal, which enables it to be very slim, even when it is designed to hold several cards. It will be noted that, when it is made of metal, the case according to the invention is preferably equipped with different damping means or pads in order to reduce the noise of metal sliding against metal. According to an additional characteristic of the protective case according to the invention, the two parallel walls between which the space intended to accommodate the card to be protected is formed, are lined with and/or made of a 6 material forming on each of said walls a barrier able to prevent the passage of waves. According to an additional characteristic of the protective case according to the invention, it comprises contact means, liable to be rendered inactive, enabling the two barriers to be connected. The advantages and characteristics of the protective case according to the invention, will appear more clearly in the description that follows and which refers to the attached drawings, which show several non-limitative embodiments. In the attached drawings: - figure 1 represents an exploded schematic perspective view of a protective case according to the invention. - figure 2a represents a partial sectional view of the same protective case. - figure 2b represents a sectional view along axis XX' in figure 2a. - figures 3a, 3b, 3c, 3d and 3e each represent a partial sectional view of a protective case according to the invention, in alternative constructions. - figure 4j represents a partial exploded schematic perspective view of another alternative construction. - figure 4 represents an exploded schematic perspective view of a particular embodiment of the same protective case according to the invention. - figure 5 represents an exploded schematic perspective view of a variation on the same particular embodiment of the protective case according to the invention. - figure 6 represents an exploded schematic perspective view of another variation on the particular embodiment of the protective case according to the invention. Figure 1 shows a protective case 1 according to the invention, designed to contain two credit cards or similar 2. It will be noted that each credit card 2 comprises a front 20 and a back 21, and that the characters embossed and visible 7 on the front 20 are represented schematically in the form of an extra thickness 22 creating a peripheral rim 23. The case 1 consists of two parts 3 and 4 together, generally flat in shape, and designed to be able to slidably cooperate one with the other. Thus, part 3 comprises on three sides a lip 30, also visible in figure 2, of which the two opposing segments are each provided on the outside with a rail 31, whilst part 4 comprises on three sides a lip 40, whose two opposing segments are each provided, on the inside, with a groove 41, with which one of the rails 31 is intended to cooperate. The lip 30 defines a housing 32 intended to accommodate the card 2 whilst enabling it to be extracted via the fourth side which does not have a lip 30. Furthermore, the two opposing segments of the lip 30 are provided, on the inside of same, with projections 33 that extend over the edges 23 of the card 2. Referring more precisely to figure 2a, it can be seen that the lip 30 is of a height preferably slightly greater than the thickness of the card 2, that the projection 33 is of a depth greater than the depth of the embossing 22, and of a width smaller than the width of the rim 23. In practice, the user first of all slides part 3 into part 4, which allows him to access the card 2, which he can then slide out of part 3. Due to the dimensional characteristics of part 3, the card 2, and more particularly the embossing 22 on same, is never in contact with part 4, which helps to protect it. Advantageously, in order to avoid the card 2 accidentally sliding out of part 32, immobilisation means are provided, consisting for example in one or more bosses arranged on the inner surface of the lips 30, under the projections, enabling the card 2 to be sufficiently blocked, but reversibly. Depending on the method of manufacturing the case, and the material of which it is made, said immobilisation means may be moulded in or be added-on parts.
8 It will be noted that in the same way means are provided that prevent the accidental sliding of part 3 in relation to part 4. Furthermore, the lip 40 on part 4 is configured so as to create, next to the housing 32, a housing 42 to accommodate the second card 2, which has the same dimensional characteristics as housing 32, namely that it is of a depth slightly greater than the thickness of the card 2, and that it has projections 43 around the edges of a depth greater than the depth of the embossing 22. It can be seen that the two cards 2 cannot come into contact with each other and that there is therefore no risk of damage. As can be seen in figure 2b, the opening enabling the extraction of the card 2 contained in part 4, is on the side of the case 1 opposite the side with the opening enabling the extraction of the card 2 contained in part 3. Thus, when the two parts 3 and 4 are slid one over the other, the two cards 2 are simultaneously rendered accessible. It will be noted that the figures only show the sliding of a card in the longitudinal direction of same, but of course it is possible to design cases where sliding takes place in the other direction. Referring now to figure 3a, this figure shows a variation in which the housings 32 and 42 are laterally offset one from the other, so that the guidance of the cards 2 in each of the housings 32 and 42 is not necessary, since it is part 4 that immobilises the card 2 contained in housing 32 of part 3 and vice versa. Referring now to figure 3b, it can be seen that the case 1 comprises three parts, namely a middle part 5 and two parts 3, as previously described. The middle part 5 takes the form of two parts 4 assembled back to back, that is to say that it comprises on each of its surfaces, on three sides a lip 50, whose two opposing segments are each provided, on the inside, with a 9 groove 51, with which one of the rails 31 of part 3 is designed to cooperate. In this alternative embodiment, the parts 3 may slide, in relation to the middle part 5, in the same direction or in opposite directions. It may even be imagined that the parts 3 may slide in two different directions, perpendicular to each other. It will be noted that it is possible to provide a means of assisting the sliding. This figure 3b therefore shows the presence of springs R enclosed in a housing 34 in the lip 30, which can assist the sliding, such assistance being able to be provided, as needed, on opening, but preferably on closing. In this version, the middle part 5 may comprise a stop member protruding on each of its surfaces facing a card, of a thickness such that it abuts against that card 2, and extending on the side opposite the opening and of a certain length, so that upon sliding each of the stop members slides over the card to place itself behind same, and upon closing, under the effect of the spring or springs, it holds the card extracted. It will be noted that it is also possible to apply this configuration to a case comprising only two parts and in this case, the spring or springs operate as return spring(s) upon closing, whilst parts 3 and 4 each have a stop member designed to cooperate with the card contained in the housings 42 and 32 respectively, so that, upon sliding, these stops slide over the cards to place themselves behind same, and that upon closing, under the effect of the spring or springs, they cause the extraction of said cards. Referring now to figure 3c, this figure shows an alternative version capable of storing four cards 2. This is in fact a double version of the case represented in figure 3b, where a middle part 5 also comprises two housings 52. Referring now to figure 3d, this figure shows variations concerning the system for sliding part 3 over part 4. Thus, part 3 comprises, facing part 4, longitudinal orifices 35 parallel to the direction of sliding, in each of which is engaged a peg 43 10 integral with part 4. In this variation the pegs 43 are connected with part 4 after part 3 is put into place, by passing through the orifices 36. Figure 3e shows, in an alternative to the embodiment in figure 3b, that the system of sliding part 3 over part 4 can also be achieved using pegs 53 manufactured as integral with the middle part 5, engaged by force in the longitudinal orifices 35 parallel to the direction of sliding. Referring to figure 3f, this figure shows another alternative construction, where the parts 3 comprise on the periphery, at the sides, of the longitudinal ridges 55, which protrude to slot into orifices or grooves 56 in part 5, and in which they can move in a limited way during sliding, each ridge 55 comprising an oblong opening 57 in which is engaged a pin or similar, preferably a screw V, which transversely crosses the groove 56 through holes 58. It will be noted that advantageously, the ends of the grooves 56 may be provided with stops, not shown, for the purpose of damping the movements and limiting the operating noise. Referring now figure 4, this figure shows a particular embodiment of the case 1 according to the invention. In this embodiment, where the assembly is analogous to that shown in figure 3e, that is to say two parts 3 assembled with one middle part 5, the lip 30 of each of the parts 3 only extends on two opposing sides, the third, which constitutes the back of the housing 32 being replaced by a lever 6 pivotably mounted on a stud 54 integral with the middle part 5 and engaged in a hole 60, oblong in shape, in the lever 6 at one end 61 of same. The lever 6 comprises, close to the hole 60, a second hole 62 into which slots a stud 37, which protrudes from the inner surface of part 3. It will be understood that the sliding movement of part 3 over the middle part 5, causes the pivoting of the lever 6, whose free end 63 propels the card 2, not shown, out of the case 1, the oblong shape of the hole 60 enabling the compensation of 11 the movement of the stud 37 non-concentrically to the axis of the stud 54. The amplitude of the movement of the card 2 depends on the amplitude of movement of the free end 63 of the lever 6, which movement depends on the amplitude of movement of part 4 in relation to part 3 and on the distance separating the two holes 60 and 62. Due to the demultiplication obtained, a small amplitude of movement of part 4 in relation to part 3 is enough to push the card 2 far enough out. The presence of the springs R enables, after extraction of the card 2, the parts 3 and 5 to return to their initial position. It will also be noted that in the case of such an alternative, it is possible that the two parts 4 may slide in perpendicular directions. Referring now to figure 5, this figure shows an alternative version where the case 1 allows the storage of two cards 2, with a system of extracting the cards 2, whilst consisting only of two parts 3 and 4. The parts 3 and 4, which are slidably mounted one upon the other, and provided with return springs, not shown, each comprise a housing 32 and 42, the latter not being visible in the figure, a lever 6 provided at one end with a pivot 64 and close to it a hole 65. The lever 6 intended to extract the card contained in the housing 32 of part 3, is mounted, through the hole 65, on a stud 38 protruding from part 3, whilst its pivot 64 is slotted into a hole, not visible, in the lip 40 of part 4. Likewise, the lever 6 intended to extract the card contained in the housing 42 of part 4, is mounted, through the hole 65, on a stud, not visible, protruding from part 4, whilst its pivot 64 is slotted into a hole 39 in the lip 30 of part 3. The levers 6 are of course of a thickness limited to that of a card, and are only mobile within the space occupied by the card with which they are associated in the housing 32 or 42.
12 During the sliding of parts 3 and 4 in relation to each other, part 4 pivots, by means of its stud, not visible, engaged in the hole 65 of the lever 6, the latter pivoting on part 3 by means of the pivot 64 engaged in the hole 39, resulting in the extraction of the card contained in the housing 42, not visible. Simultaneously, part 3 pivots, by means of its stud 38, engaged in the hole 65 in the second lever 6, the latter on part 4 by means of the pivot 64 engaged in the hole, not visible, in the lip 40, resulting in the extraction of the card contained in the housing 32. As for the embodiment shown in figure 4, the distance separating the pivot 64 from the hole 65, determines the degree of demultiplication of the extraction of the cards. Referring now to figure 6, this figure shows an alternative version able to store up to 4 cards. Each of the parts 3 and 4 comprises a double housing, enabling two cards to slide independently of each other and parallel to each other through projections 33 and 43, not visible, whilst the levers 6 are configured to have a proximal part 66 of a thickness corresponding to that of the double housing, and a distal part 67 of half that thickness, which creates at the junction of the two parts, proximal 66 and distal 67, a shoulder 68. It will be understood that during the sliding of the parts 3 and 4 in relation to each other, each of the levers 6 propels two cards, one by means of the distal part 67, and the other by means of the shoulder 68, so that the cards are extracted offset. Generally, whatever the embodiment considered, it is possible to index the different positions of part 3 in relation to part 4, by means for example of magnets placed on the two parts 3 and 4, or 5 in positions and with orientations facilitating the desired action. It is thus possible to provide that the magnets attract each other in extreme positions of the parts 3 and 4 or 5 in relation to each other, in order to mark these positions, and 13 that they repel each other in intermediate positions to facilitate the sliding. Also generally, it is possible to provide a flap closing the case, pivotably and/or slidably mounted, able to retract when the parts 3 and 4 slide over each other upon opening. Furthermore, it will be noted that it is possible that the two parts 3 and 4 may be of identical design, but asymmetrical, that is to say that they comprise both male and female assembly parts, so that they can be assembled together after turning one of them round. The protective case according to the invention physically protects the card or cards it contains, but also, depending on the embodiment, from remote reading of the information on it/them. Indeed, the use of contactless credit cards is growing fast, and with this comes an increased risk of fraud, such as the remote reading of the card holder's bank details. Advantageously, the case can be made partly or entirely from a material able to constitute an electromagnetic barrier capable of preventing the passage of waves. The outer walls can thus be made of metal, or coated in metal, and preferably contact means can connect said metal parts to each other to form a cage. It will be noted that advantageously, the above-mentioned contact means are designed to be active when the case is closed, and inactive when the case is open, so as to enable the use of the card's contactless function without having to take it out of the case, but simply by opening the case.