identical or corresponding components are provided with the same reference numbers in the figures of the drawings . represented in fig1 is a tray 2 , which comprises a flat tray body 4 made of plastics , on the upper side of which a first receiving surface 6 is formed . the tray 2 comprises an edge 8 extending upwardly and outwardly from the tray body 4 . the edge 8 may extend over the entire periphery of the tray ; however it may also be formed on just two opposite sides of the tray 2 . attached to the edge 8 at two opposite sides of the tray 2 are flat handles 10 , 12 , which at their upper sides are provided in each case with a groove 14 or 16 respectively open at the top . from fig2 it can be seen that the tray body 4 has a substantially rectangular construction . furthermore it can be seen that the edge 8 extends substantially over the entire length of the sides at which the handles 10 , 12 are provided , with the grooves 14 , 16 extending over the entire length of the handles 10 , 12 . moreover it can be seen from fig2 that on the first receiving surface 6 the tray 2 comprises shaped portions 18 , 20 , which in this exemplified embodiment are formed by depressions in the first receiving surface 6 of the tray body 4 and limit standing surfaces 22 , 24 , which is adapted to the outer contour of the bottom of meal containers , bowls , beakers , cups or the like in which the food is contained . represented in fig3 is a receiving part 26 , which comprises a flat body 28 made from plastics . formed on the upper side of the body 28 is a second receiving surface 30 , and from the body 28 an edge 32 extends upwardly and outwardly , whereby the edge may extend over the entire periphery of the body 28 of the receiving part 26 in its edge region or may be formed just on two opposite sides of the body 28 . moreover at opposite sides the receiving part 26 comprises edge parts 34 , 36 extending downwardly from the edge 32 , the ends 38 , 40 of which are shaped to be substantially complementary to the grooves 14 , 16 of the tray body 4 . from fig4 it can be seen that the edge 32 extends substantially over the entire extent of the longitudinal sides of the receiving part 26 and that the edge parts 34 , 36 also extend substantially over the entire extent of the sides of the receiving part 26 . moreover it can be seen from fig4 that the receiving part 26 comprises a shaped portion 42 , which limits a standing surface 44 which is adapted to the outer contour of the base of meal containers or the like . from a comparison of fig2 and 4 it can be seen that the second receiving surface 30 is only roughly half the size of the first receiving surface 6 of the tray 2 . the receiving part 26 is constructed as an attachment to the top of the tray body 4 . in fig5 the tray 2 is represented with the receiving part 26 placed on top of it . in this position the receiving part 26 engages by the ends 38 , 40 of its edge parts 34 , 36 into the grooves 14 , 16 of the tray and can be displaced in relation thereto in the groove direction , i . e . in the longitudinal direction of the tray 2 . in the arrangement shown in fig5 meal containers 46 , 48 are placed on the first receiving surface 6 of the tray 2 and a meal container 50 is placed on the second receiving surface 30 . the clear width between the underside of the receiving part 26 and the first receiving surface 6 has such dimensions that the meal containers 46 , 48 , where appropriate with lids , are situated in the space formed between the receiving part 26 and the first receiving surface 6 , without bumping from below against the receiving part 26 . in this manner the meal containers 46 , 48 remain in their position , even with a displacement of the receiving part 26 relative to the tray body 4 . by virtue of the fact that the receiving surfaces 6 , 30 are disposed above one another in different planes , even if the area of the tray 2 is small there is sufficient space available for meal containers or the like on the other receiving surfaces 6 , 30 . the tray 2 has such height dimensions that the tray body 4 with the receiving part 26 placed thereon fits into a slide - in unit of a trolley . for this purpose it may only be necessary to store the meal container 50 separately and only after removing the tray 2 from the trolley to place it on the second receiving surface . the receiving part 26 may for example be placed onto the tray body 4 in such a manner that it is located over the one half of the tray body 4 , so that objects having a height which is greater than the clear width between the underside of the receiving part 26 and the first receiving surface 6 may be placed on the other half of the tray body 4 . this is indicated for a cup 52 in fig5 by broken lines . from fig6 it can be seen that the receiving part 26 is disposed over one half of the tray body 4 . in this position the meal container 50 disposed on the second receiving surface 30 and a meal container 54 disposed on the first receiving surface 6 are accessible from above . to open the remaining meal containers 46 and 48 the user displaces the receiving part 26 in the direction of an arrow 56 , so that it is disposed over the upper half of the tray body 4 in fig6 so that the meal containers 46 , 48 are then accessible from above . when the receiving part 26 is displaced the cup 52 may be placed on the second receiving surface 30 of the receiving part 26 . from fig6 it can also be seen that the shaped portions 18 , 20 , 42 are constructed in such a manner that the standing surfaces limited by them are in each case adapted to the outer contour of parts of the base of the meal containers 46 , 48 , 50 , 54 and also of the cup 52 . in this manner the meal containers 46 , 48 , 50 , 54 and the cup 52 are securely retained on the receiving surfaces 6 , 30 . the tray 2 may also be used without the receiving part 26 , as is represented in fig7 . moreover the receiving part 26 may also be used without the tray body 4 , as is explained in further detail below in the case of fig2 . fig8 shows a second exemplified embodiment of the tray 2 specified by the invention with the receiving part 26 placed thereon and meal containers 46 , 48 , 50 situated on said part . this exemplified embodiment differs from that shown in fig1 to 5 in that the edge 8 comprises an extension 58 extending outwardly from the tray body 4 , on which the handles 10 , 12 are disposed . by virtue of the extension 58 , in this exemplified embodiment the handles 10 , 12 are constructed larger than in the exemplified embodiment shown in fig1 to 7 , so that the handling of the tray 2 is further improved . fig9 shows the tray shown in fig8 without the receiving part 26 and without the meal containers . fig1 shows a second exemplified embodiment of the receiving part 26 , which differs from the first exemplified embodiment shown in fig4 in that the receiving part 26 is provided on one transverse side with first connecting elements 60 , 62 , which in this exemplified embodiment are disposed in pairs , and on the opposite transverse side with second connecting elements 64 , 66 , which in this exemplified embodiment are also provided in pairs . the first connecting elements 60 , 62 and the second connecting elements 64 , 66 form connection means for the detachable connection of the tray 2 with adjacent tray not represented in fig1 , for example if the trays are placed next to one another on a trolley . the connecting means are explained in further detail below . fig1 shows a plan view of a tray body 4 of a third exemplified embodiment of the tray 2 specified by the invention . this exemplified embodiment differs from the exemplified embodiment shown in fig2 by the fact that in this exemplified embodiment on one transverse side of the tray first connecting elements 60 , 62 arranged in pairs are provided and on the opposite side second connecting elements 64 , 66 also arranged in pairs are provided . fig1 represents the tray shown in fig1 in a partially sectional side view . it can be seen that the shaped portions 18 , 20 of the first receiving surface 6 which limit the standing surfaces 22 , 24 are formed by raised portions 68 , 70 . however the shaped portions 18 , 20 may be formed by recesses , as is described in more detail above . fig1 shows a view top plan view of the lower half of the tray 2 in fig1 as shown in fig1 , in which case a container 54 , a cup 52 and a further meal container 72 are situated on the tray . fig1 shows in a diagrammatical sectional view a first connecting element 60 of the tray body 4 , which is connected to a second connecting element 64 of a tray which is not represented in the drawings and is adjacent to the tray 2 . the first connecting element 60 comprises a groove 74 extending substantially parallel to the side of the tray and open at the top , while the second connecting element 64 comprises a projection 76 , with which the second connecting element 64 engages with form fit in the groove 74 of the first connecting element 60 of the adjacent tray . when the tray 2 is pulled in the direction of an arrow 79 , for example when withdrawing the tray 2 from a trolley , the tray 2 entrains the adjacent tray in the direction of the arrow 79 by the form - fit connection of the connecting elements 60 , 64 . when the tray 2 is removed from the trolley , the second connecting element 64 of the tray 2 can be unhooked from the first connecting element 60 of the adjacent tray . in this manner the handling of the tray 2 specified by the invention is improved , especially if several trays 2 specified by the invention are contained in a trolley . the connecting elements 60 , 62 , 64 , 66 may be provided on the tray body 4 and / or on the receiving part 26 . fig1 shows a further exemplified embodiment of connecting elements 60 , 64 , which are disposed at opposite sides of the tray body 4 . in this exemplified embodiment the free end of the first connecting element 60 is constructed as a downwardly pointing hook 76 and the free end of the second connecting element 64 as an upwardly pointing hook 78 . at their ends faced away from the tray body 4 the hooks 76 , 78 in each case comprise a bevelled edge 80 , 82 , which in each case slopes towards the tray body 4 . to connect the first connecting element 60 of the tray 2 to a second connecting element 64 of an adjacent tray , the tray 2 is displaced towards the adjacent tray , as illustrated by an arrow 79 in fig1 . in this case the hook 76 of the first connecting element 60 slides by its bevelled edge 80 up to the bevelled edge 82 of the second connecting element 64 of the adjacent tray and finally hooks onto the hook 76 , so that the trays are connected to one another and when one of the trays is moved in the direction of the arrow 78 or in the opposite direction to the arrow 79 the respectively adjacent tray is entrained and in this manner a series connection is formed between the trays . the connecting elements 60 , 64 can be added to the tray 2 or formed in one piece therewith . represented in fig1 is a further exemplified embodiment of connecting elements 60 , 64 , in which the first connecting element 60 and the second connecting element 64 have an identical construction with respect to their shape . the connecting elements 60 , 64 comprise a substantially arrow - shaped cross section , the arrow tips 84 and 86 respectively of which point away from the tray body 4 . the connection of two adjacent trays 2 to one another is performed in this exemplified embodiment in the manner described above with reference to fig1 . in comparison with the exemplified embodiment shown in fig1 , the exemplified embodiment shown in fig1 however has the advantage that , by virtue of t he symmetric al design of the connecting elements 60 , 64 , the first connecting elements 60 of the tray 2 can be connected both with the first connecting elements 60 and also with the second connecting elements 64 of an adjacent tray , whereas in contrast in the exemplified embodiment shown in fig1 , with the connecting elements 60 , 64 having a different design , a connection of two adjacent trays 2 is only possible if in each case a first connecting element 60 of a tray 2 is opposite a second connecting element 64 of an adjacent tray . fig1 shows a plan view of a tray 4 with the connecting elements shown in fig1 . it can be seen that the connecting elements 60 , 64 are disposed on opposite sides of the tray body 4 and in pairs in each case . however it is basically sufficient if in each case just one connecting element 60 , 64 is provided for each side of the tray . moreover it can be seen that the cross section of the connecting elements 60 , 64 increases outwardly along the side of the tray . fig1 shows a view from underneath in fig1 of the tray shown in fig1 without receiving part 26 , wherein the arrow - shaped cross section of the connecting elements 60 , 64 can be seen . fig1 shows a view from the right in fig1 , wherein it can be seen that the cross section of the second connecting elements 64 is enlarged upwardly and downwardly along the side of the tray . fig2 shows a detail from fig1 in the region of the connecting element 64 on the left in fig1 . it serves to illustrate the design of the connecting element 64 . moreover in fig2 it can be clearly seen that the receiving part 26 in this exemplified embodiment comprises an edge part 34 which in the region of its free end comprises an outwardly pointing edge region 88 . moreover in this exemplified embodiment the edge part 34 of the receiving part 26 is guided by its end faced towards the tray body 4 not in grooves formed on the upper side of the handles 10 , 12 , but on an edge of the handle 12 extending in the displacement direction . the edge part 36 with its end faced towards the tray body 4 is guided in a corresponding manner on an edge of the handle 10 . a stop for limiting the displacement of the receiving part 26 in relation to the tray body 4 is formed by the fact that the second connecting element 64 extends upwardly in the region of the edge of the handle 12 . the receiving part 26 may also be used without the tray body 4 , as represented in fig2 . the receiving part 26 may for example be supported by its edge regions 88 of its edge parts 34 , 36 on an edge bead 90 of a table top 92 of a passenger table 94 in an aeroplane . the receiving part 26 is then securely retained on the passenger table 94 . to prevent the receiving part 26 sliding off the tray body 4 , clamping means for connecting the receiving part 26 to the tray body 4 by clamping may be provided . fig2 shows a first exemplified embodiment of such clamping means , in which the clamping means are formed by a clamp 96 moulded on the handle 12 , which in the clamping position engages over the edge region 88 of the edge part 34 of the receiving part 26 . in this manner the receiving part 26 is reliably prevented from sliding off the tray body 4 , with a displacement of the receiving part 26 in the displacement direction , i . e . perpendicular to the drawing plane in fig2 , also being possible . represented in fig2 is a further exemplified embodiment of the clamping means , in which the clamp 96 is constructed as a separate part and in the clamping position engages in clamping fashion over the edge 8 of the tray body 4 or the handle 12 and the edge region 88 of the edge part 34 of the receiving part 26 . the clamp 96 may be made from metal , for example . represented in fig2 is a detail in the region of the edge 8 of the tray body 4 of a further exemplified embodiment of the tray body 2 . in this exemplified embodiment the tray body 4 in the region of its edge 8 is provided with support parts 98 , which project over the under side of the tray body 4 . the tray body 4 is supported by these support parts 24 on a rail 95 of a slide - in compartment 97 of a trolley , so that the tray body 4 is disposed higher in relation to the rail 95 than would be the case if the tray were supported directly by the underside of the handle 12 on the guide rail 95 . this may be necessary by virtue of the construction of the slide - in compartments of some trolleys . depending on how the slide - in compartments of the respective trolley are constructed , the tray body 4 therefore comprises either support parts 98 or is supported directly by the handles or another part of the tray body in the slide - in compartment of the trolley . fig2 shows a plan view of a tray body 4 of a further exemplified embodiment of the tray 2 specified by the invention . the first receiving surface 6 comprises a shaped portion 20 , which is formed by a depression and limits a standing surface 24 which is adapted to the outer contour of the base of a meal container 100 . a narrow side 102 of the meal container 100 comprises a recess 104 , which is shaped to complement the opposite narrow side 106 of the meal container 100 in such a manner that when several similar meal containers are situated on a tray 2 , the meal container 100 with its narrow edge 106 abuts the recess 104 of an adjacent meal container 108 with form fit . by the form - fit abutment of the meal container 100 against the meal container 8 in conjunction with the shaped portion 20 , the retention of the meal containers 100 , 108 on the tray 2 is improved , so that even when the tray 2 is tilted the meal containers 100 , 108 do not slide in fig6 the area of the tray body may correspond , for example , to roughly ⅔ the area of a conventional tray . then four such trays specified by the invention may be contained one behind the other in a slide - in compartment of a conventional trolley . the area of the receiving part 26 may , for example , correspond to roughly ⅓ the area of a conventional tray . in this case six such receiving parts may be used in a slide - in compartment of a conventional trolley .
tray is engineered for receiving food , in particular on board aeroplanes , vehicles or other transport means , wherein the tray comprises a tray body , on which a first receiving surface for receiving food is formed , and a receiving part extending above the first receiving surface and spaced therefrom , on which upper side of which a second receiving surface for receiving food extending above the first receiving surface and spaced therefrom . since the receiving surfaces are disposed on different planes , the actual area of the tray may be slight , in which case the receiving surfaces disposed lying above one another together form a receiving surface which may be substantially larger than the area of the tray . the tray is therefore particularly suitable for use in restricted spatial conditions , for example on board aeroplanes . the vertical dimensions of the tray may be such that the tray body with the receiving part placed thereon fits into a slide - in unit of an existing trolley . this saves space , for example on board aeroplanes .