Abstract:
The invention relates to a device comprising a trough ( 2 ) with a base wall ( 4 ) and side walls ( 5 ), said trough ( 2 ) designed to contain a liquid and a tray ( 3 ) for placing in the trough ( 2 ), for supporting a growing substrate with at least one well ( 15 ), the bottom of which communicates with the liquid in the trough ( 2 ) each of which has an adjacent breaking zone ( 7, 12 ), the cutting of which permits the device to be divided up.

Description:
TECHNICAL FIELD OF THE INVENTION 
     The present invention relates to a device with a store of water for growing a lawned surface. 
     BRIEF DISCUSSION OF RELATED ART 
     In arid regions such as the regions of the Mediterranean basin for example, growing lawned surfaces presents several problems. 
     This is because in these regions the layer of arable soil is thin, or even non-existent, and the very great heat in these regions means that watering has no appreciable effect because the water with which the lawn is watered evaporates almost immediately. 
     In addition, the sites where it may be desirable to cultivate or grow lawns, which are natural sites, therefore have a relief which is not always strictly flat and may exhibit certain obstacles such as trees for example. 
     BRIEF SUMMARY OF THE INVENTION 
     The invention proposes a device comprising a store of water for growing lawned surfaces which can be adapted to suit the unevenness of the ground on which it is placed. 
     To this end, the device according to the invention comprises:
         a trough having a bottom wall and side walls, the trough being intended to contain a liquid, and   a tray fitting into the trough, intended to support a growing substrate and having at least one well the bottom of which communicates with the liquid contained in the trough.       

     According to the invention, the trough and the tray each have a frangible region facing one another, the severing of which allows the device to be divided. 
     By virtue of this arrangement, the device can be adapted to suit the unevenness of the ground. 
     According to one particularly advantageous characteristic, the bottom wall of the trough makes an angle of less than 90° with one of its side walls, which allows the device to be positioned on sloping ground. 
     According to a preferred embodiment, the frangible region formed in the trough is delimited by two partitions and the frangible region in the tray is delimited by two ribs. 
     As a preference, the trough has a square shape exhibiting two frangible regions connecting the middle of its two opposite sides and the tray has a square shape having two frangible regions connecting the middles of two opposite sides. 
     In order to allow the tray to lie better, the trough has a square shape exhibiting two frangible regions connecting the middles of two opposite sides and the tray has a square shape having two frangible regions connecting the middles of two opposite sides. 
     Advantageously, at least one notch is made in the upper part of the side walls of the trough, which makes it possible to ensure the continuity of the substrate when several devices are in contact with one another. 
     According to one possibility, at least one clip is fitted over the upper part of the wall, this clip resting against the tray. 
     In addition, slots are pierced in the bottom wall of the well. 
     In an alternative form of embodiment, at least one of the corners of the trough and of the tray has the shape of an arc of a circle. 
     According to an advantageous characteristic, the trough has, in at least one of its side walls, a nozzle and, in its wall opposite the latter, an opening equipped with a peripheral seal capable of accepting the nozzle when two troughs are placed next to one another. This characteristic allows water to communicate and circulate from one trough to the other. 
     Also, advantageously, the trough has, in at least one of these side walls, a cutout allowing water to pass from one trough to the other when two troughs are placed side by side. 
     For water management purposes, the tray has means for conveying water into a trough. 
     According to one embodiment, the frangible region of the tray consists of a U-section facing downward and. able to accept a water supply hose. 
     According to another embodiment, the frangible region of the tray consists of a pipe of which the part facing the trough has at least one opening. 
     According to the lie of the land on which the device is placed, the pipe connects the middles of the two opposite sides of the tray, or the pipe connects the middles of the consecutive sides of the tray. 
     The tray may also have two pipes in the shape of a cross. 
     Advantageously, a selection valve is placed at the intersection of the pipes. 
     In another embodiment, the frangible region is delimited by ribs on able to accept a cover to define a water conveying duct. 
     In order to position the trough and therefore the device better, the underside of the trough is equipped with spikes. 
     Advantageously, the tray has, on one of its sides, a male interlock feature and, on its opposite side to the first, a female interlock feature which makes it possible to prevent the growing substrate from dropping into the trough when the device is in operation. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       For a full understanding thereof, the invention is described with reference to the attached drawing which, by way of nonlimiting example, depicts several embodiments of a device with a store of water according to this invention. 
         FIG. 1  is an exploded perspective view of one embodiment of this device. 
         FIG. 2  depicts a view of the device from above. 
         FIG. 3  depicts a view of the device in section. 
         FIG. 4  depicts a side view. 
         FIG. 5  depicts a view of one embodiment of this device, from above. 
         FIG. 6  depicts a side view of another embodiment of the device. 
         FIG. 7  depicts, in perspective, one possible implementation of the device with a store of water according to the invention. 
         FIGS. 8 to 15  illustrate several variants of embodiment of the device. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Referring first of all to  FIG. 1 , it can be seen that the device with a store of water according to the invention comprises two elements, namely a trough  2  and a tray  3 . 
     In the embodiment depicted in the drawing, the trough  2  has the shape of a square with a bottom wall  4  and four side walls  5 . 
     The trough  2  also has a frangible region in the shape of a cross connecting the middles of two opposed lateral partitions. This frangible region  7  is delimited by two partitions  8  defining a cross between them. 
     It will also be noted that a shoulder  9  is formed in each of the side walls  5  of the trough  2 . The shoulder  9  is situated at the same height as the upper end of the partitions  8 . 
     Finally, it will be noted that the upper part of the side walls  5  has two notches  10 . 
     As far as the tray  3  is concerned, the latter also has the shape of a square the dimensions of which allow it to sit within the trough  2 . 
     The tray  3  also has a frangible region  12  connecting the middles of its opposite sides. The frangible region  12  is delimited by ribs  13 , these ribs also extending over the periphery of the tray  3 . 
     The tray  3  is also equipped with four wells  15  each one situated at the center of the four squares delimited by the frangible region of the tray  12 . The bottom of each of the wells  15  is provided with slots  17 . 
     The tray  3  is placed in the trough  2 , the tray  3  rests, on the one hand, on the shoulder  9  and, on the other hand, on the end of the partitions  8  which delimit the frangible region  7  of the trough, as can be seen in  FIG. 3 . 
     To prevent the tray  3  from possibly riding up, clips  18  are fitted over the upper edge of the side walls  5 . 
     When a lawned surface is to be produced in a region in which the layer of arable land is insufficient for those purposes or, when the temperature conditions mean that evaporation is very high, a sufficient number of devices to cover the desired area are placed in contact with one another. 
     A growing substrate which may be earth or compost or an appropriate mixture is placed on the trays  3  of each of the devices, this substrate is then leveled then compacted and may then be lawned or cultivated. 
     When this surface is watered, the excess water runs into the trough  2  by virtue of the slots  7  made in the bottom of the wells  15 . This water which is then contained in the trough  2  can resupply by capillarity the substrate contained on the tray when this substrate dries out. 
     When the terrain that is to be lawned exhibits an obstacle, such as a tree or a geological obstacle, the device will then be severed along the frangible regions of the tray  3  and of the trough  2  respectively. 
     As far as the trough  2  is concerned, it will be noted that, since the frangible region  7  thereof is delimited by two partitions  8 , when this frangible region is severed as can be seen for example in  FIG. 7 , the device from which one element has been removed maintains its watertightness properties. 
     If the ground to be lawned is sloping, a variant embodiment of the trough  2  is provided in which the bottom wall  4  thereof makes an angle of less than 90° with one of its side walls so that the growing substrate retention capacity and the watering water retention capacity of the device are not adversely affected. 
     Thus, as can be seen in  FIG. 7 , the invention therefore proposes a device with a store of water for growing lawned surfaces which can be adapted to suit various lies of the land, on the one hand, while being able to be cut down so that the device can be adapted to suit obstacles that the surface being lawned may comprise and, on the other hand, be adapted to suit unevenness of the ground thereof. 
       FIG. 5  illustrates an embodiment of the device in which the corners of the trough  2  and of the tray  3  are in the shape of an arc of a circle so that when the devices are placed in contact with one another, a tubular opening is formed between them. Via this tubular opening it is then possible to pass a spray nozzle which, by virtue of an opening formed in the bottom of the trough  2 , allows water to be supplied directly to the trough  2 . 
     The embodiment illustrated in  FIG. 5  is particularly well suited to very hot areas in which evaporation is very high. 
     As can be seen in  FIG. 9 , the trough has, in one of its side walls, two nozzles  20  and, in its opposite wall to the latter, two openings  21  each equipped with a periphery seal able to accommodate the nozzle  20  when two troughs  2  are placed side by side. This characteristic allows water to communicate and circulate from one trough to another. 
     This figure also shows that the trough  2  has, in its side walls, cutouts  22  allowing water to communicate from one trough to another when two troughs  2  are side by side. 
     To manage the supply of water, there are several possible embodiments of the tray. 
     Referring to  FIG. 8 , it can be seen that the frangible region of the tray  3  consists of a U section  24  facing toward the trough and able to accept a water supply hose. 
     It is also envisaged for the frangible region of the tray  3  to consist of a pipe  25  of which the part facing the tray  2  has at least one hole (not visible in the drawing) and which allows the trough to be supplied with water. 
     As can be seen in  FIGS. 11 to 13 , the pipe  25  connects the middles of the two opposite sides of the tray  3  or the pipe  25  connects the middles of the consecutive sides of the tray  3 . 
     The tray  3  may also have two pipes  25  in the form of a cross, as shown in  FIG. 14 . A selection valve  26  is placed at the intersection of the pipes  25 , allowing the flow of water to be directed. 
     In another embodiment illustrated in  FIG. 14 , the frangible region is delimited by ribs  26  on able to accept a cover  27  to delimit a water conveying duct. The cover  29  is equipped with couplings  31  to a water supply system. 
     It will also be noted that for better positioning of the trough and therefore of the device, the underside of the trough is provided with spikes  28  as shown by  FIG. 10 . 
     Advantageously, the tray  3  has, on one of its sides, a male interlock feature  29  and, on its opposite side to the first, a female interlock feature  30  which makes it possible to prevent the growing substrate from dropping into the trough when the device is in operation. 
     The invention thus provides a device with a store of water having the numerous advantages indicated hereinabove. 
     It goes without saying that the invention is not restricted to the embodiments described hereinabove by way of nonlimiting example but on the contrary it encompasses all variant embodiments thereof.