Background art Coats used in the art, e. g. plastic containers are round-shaped in the floor projection and they are transported in a number of coats, as a rule six, close-packed side by side and are wrapped together by a plastic wrapping.

The disadvantage of the art is that among these coats packed in the smallest possible surface area still there is a relatively large dead space which causes problems while arranging larger units and also it is transport-and storage-intensive because the free space among the coats implies underutilizing traffic precinct and storage area of the transported or stored fabric, thus in the traffic precinct unit or the storage unit a relatively limited number of coats can be fitted and accordingly a relatively limited amount of the fabric stored in the coats.

The goal of the invention intends to minimize or at least to eliminate the drawbacks of the art.

Principle of the invention The goal of the invention has been reached by a coat whose principle consists in that a hollow body is fitted with a pair of connecting means system for connecting an infinite number of coats into one unit while the first connecting mean is a counterpart to the other connecting mean. A better efficiency of traffic precinct and storage area is reached by this easy connection of the coats in larger transporting and storage units. To provide variability in connecting the coats the hollow body is on its side fitted with a pair of the first connecting means situated on opposite sides of the hollow body while the hollow body is on its side fitted with a pair of the second connecting means situated on the other opposite sides of the hollow body which are not fitted with the first connecting means. For easier coat production and utilization the first connecting mean consists of a dovetail lug and the second connecting mean consists of dovetail groove where the size and the shape of the dovetail lug relates to the inner size and shape of the dovetail groove. According to one preferred embodiment the hollow body is prism-shaped with a four-sided cross-section and with straight side walls. According to another preferred embodiment the hollow body is prism-shaped with a four-sided cross-section where its two opposite side walls are bowed outward of the hollow body and the other two opposite side walls are bowed inward of the hollow body. To prevent spontaneous mutual movement of the connected coats the hollow body is fitted with appropriate means. To provide a secure storage of the coats vertically and to provide a secure stacking up the layers of coats vertically it is preferred when the hollow body is composed of the first connecting mean on its upper part consisting of inlet nozzle with the filler opening and on its lower part the second connecting mean is formed by an indentation in the bottom of the hollow body where the shape and the size of the indentation in the hollow body bottom correspond to the shape and the size of the inlet nozzle.

Description of the drawing The technical solution is schematically shown in the drawings in which Fig. 1 represents a number of coats connected into one transporting unit with square floor projection and straight sides, Fig. 2 is the floor projection from the Fig. 1, Fig. 3 represents a floor projection of a number of coats connected into one transporting unit with square floor projection with curved (inward, outward) sides and Fig. 4 represents a number of coats connected into one transporting unit with square floor projection and with shaped sides.

Examples of embodiments of invention Coat consists of a hollow body 1 fitted with a filler opening 2 which can be positioned either on a protruding inlet nozzle 3 or it can be positioned directly in the upper wall of the hollow body 1. In the example of embodiment shown in the Fig. 1 and 2 the hollow body 1 is on its upper part fitted with a lug forming the inlet nozzle 3 with the filler opening 2 and in the bottom of the hollow body 1 a not represented indentation is shown whose shape and the size correspond to the shape and the size of the inlet nozzle 3 with the filler opening 2 which permits advantageously and securely to stack the coats one on another and also to store them in the vertical position. The combination of the protruding inlet nozzle 3 and the not represented indentation in the hollow body 1 bottom represents the further mentioned pair of connecting means X1, X2, where the first connecting mean XI is the counterpart to the second connecting mean X2.

It is preferred that the hollow body 1 in the shown examples of embodiment is prism-shaped. The side walls of the hollow body 1 can be straight (see Fig. 1 and 2) or can be further in appropriate shape, e. g. they can by curved (outward and also inward the hollow body 1) see Fig. 3. In the shown example of embodiment the hollow body 1 is of a square floor projection. In the not represented example of embodiment the hollow body 1 can be of a rectangular floor projection with straight side walls or with side walls of another appropriate shape. In another not represented example of embodiment the hollow body 1 floor projection can be of another appropriate shape permitting the ultimate efficiency of traffic and storage volume in the terms of this technical solution.

The hollow body 1 on its side part, in the represented examples of embodiment on its side walls, consists of at least one pair of corresponding connecting means X1, X2, where the first connecting mean X1 is the counterpart to the second connecting mean X2.

In the shown example of embodiment the first connecting mean X1 on the side part of the hollow body 1 consists of the dovetail lug 4 and the second connecting mean X2 on the side part of the hollow body 1 consists of the dovetail groove 5 while the size and the shape of the dovetail lug 4 corresponds to the inner size and shape of the dovetail groove 5. In the shown example of embodiment the dovetail groove 5 is made on the two opposite side walls of the prism-shaped hollow body 1 and on the two other opposite side walls of the prism-shaped hollow body 1 a dovetail lug 4 is made. In the not represented examples of embodiment can the connecting means X1, X2 on the side part or, as the case may be, on the side walls of the hollow body 1 consist of e. g. one or more lug-corresponding aperture pairs, one or more lug- groove pairs in another shape construction then the represented dovetail construction, one or more pin-lugs alternating on the hollow bodies 1 systems with mutually following up holes etc. In the not represented example of embodiment the first connecting mean X1 is situated only on one side wall of the hollow body 1 and the second connecting mean X2 is situated only on one of the adjacent side part of the hollow body 1. In another not represented example of embodiment the first connecting mean XI is situated on one side part of the hollow body 1 and on the opposite side part of the hollow body 1 the second connecting mean X2 is positioned etc.

In another not represented example of embodiment the hollow body 1 is fitted with means preventing spontaneous mutual movement of the connected coats 1.

These means can be according to one example of embodiment formed that the dovetail groove 5 and the dovetail lug 4 are made to form a close mutual contact of its walls in the connected coats 1 thus a friction action between the walls of the dovetail groove 5 and the dovetail lug 4 against spontaneous mutual movement of the connected coats 1 is formed and the friction action is not at the same time so big to provide a sufficient simplicity to dismount the connected coats 1. These means can according to another example of embodiment consist of appropriate mechanical means, for instance that the coat 1 is fitted with appropriate stop pieces or retaining pawls or indentations and/or lugs for mutual locking.

The whole system of the coats forms a coat system where every coat comprises at least one first connecting mean X1 capable to connect with the second connecting mean X2 made on another coat and simultaneously each coat contains at leas one second connecting mean X2 capable to connect with the first connecting mean X1 on next another coat etc. , which in fact enables to connect every single coat freely into larger units for transporting and storage with lower demand on the traffic precinct and storage area per one volume unit of the transported or stored material.