BACKGROUND OF THE INVENTION blocksusuallyusedinmakingtoysorfunTheconventional aremostlymadeofwoodorplasticmaterial.gamesetc.

Whereas, wood in its nature looks dirty and also gets dull upon use with the passage of time, while plastic is not eco friendly.

Different types of blocks which are available in the market cannot be properly tightened. After some time they loose grlp due to wear & tear.

The current invention lends itself advantageously, but with simplex elements with other known construction toys. The devicepresentinventionhasuniquefeatureswhichthe enhances the performance of the building elements and inparticular.constructionblocks OBJECTS OF THE INVENTION <BR> <BR> <BR> <BR> <BR> <BR> The object of the present invention is to create such type of blocks which can easily be combined/assembled.

Anothertheinventionistoprovidetightgripof <BR> among different elements so that after gripping, the different elements do not become loose.

Still another object of the invention is to have the combination of different elements having facility of rotation up to 360°.

Another object of the invention is to accommodate snapping mechanism on all structural elements.

SUMMARY OF THE INVENTION The present invention allows the use of plurality of materials such as Steel, Aluminum, Brass, Plastic and the like to form a configuration. Generally, materials which are light in weight are to be used so that they can be properly handled. These blocks can be used as toy blocks for children. Different shapes and configuration can be made such as cars, planes, huts, buildinqs, trains, robots, cathedrals etc., depending on the imagination of the child.

These blocks can easilv be used by architects also to make models of their proposed buildings. They can also be used by engineers/industrial designs for the purposes of modeling as well.

These blocks are so designed that when they are interlocked, cannot be easily dismantled on account of the snap mechanism which has a tight grip between them. They can only be taken apart when slight pressure is applied with finger to enable the spring to release the male member.

The material known to be most suitable for making elements ofaluminumwhichcouldbeeasilypressuredieisalloy casted/extruded, since the alloy of aluminum has a reasonable degree of strength for proper functioning and for riveting of the snap action mechanism where ever required.

As well as it allows to form various composite structures at limited cost.

Accordingly this invention relates to interlocking building blocks characterizing the use of spring action mechanism comprising structural elements ; said elements having male and female snap action mechanism, where in said female snap action mechanism having recesses accommodating expandable spring with two arms of the spring protruding inwardly in said female receptacle to receive male snap action mechanism thereby interlocking the joint means provided to allow 360° rotation along the axis of snap action mechanism between male snap action mechanism and female snap action mechanism wherein the male snap action mechanism having a recess throughout the diameter of the upper half to allow the spring to come back to its original position, thereby interlocking the joint.

Another aspect of the invention is to accommodate snapping mechanism on all the structural elements. The female snapping mechanism is provided with an expandable spring with two arms of the spring protruding inwardly in the female receptacle. When the male snapping mechanism is snapped/pustied with the pressure of the fingers the spring opens to accommodate the male snapping mechanism. Once the mechanism is totally interlocked, the spring comes to its original position, thereby preventing the release, without the use of pull force. The spring comes back to its original

ofarecessprovidedinthemalesnappositionbecause mechanism throughout the diameter of the male snap action mechanism.

At the time of release a similar action takes place whereby the spring is pushed outwards due to the pull force and results in disengaging the snap mechanisms.

Another aspect of the invention is to have the plurality of radially receiving and engaging portions of other elements to form a configuration. Yet another aspect of the invention is that, plurality of material can be used as the interlocking of the blocks is only rependent upon the snap mechanism and not the material involved. Yet another aspect of this invention is to provide for a locking arrangement of the elements when the elements are along their axial axis.

Yet another aspect of this invention is to allow rotation of elements along the axis of the snap mechanism as per the requirement. Should the rotation be not desired the elements can be made static with each other by having two or more snap mechanism between them. However, should completely free and unrestricted rotation be desired between the two elements, free rotating shaft with male snap mechanism on either end of the shaft can be used. The shaft in this mode is placed between two holes of the element where the holes are of a larger diameter than the male snapping mechanism and the shaft which has the male snapping mechanism on either end.

DESCRIPTION OF THE DRAWINGS Now the invention is described as per the accompanying drawings:

FIG. I is a crose sectional view of square element 1 showing the snap action mechanisms, both male and female type shown in opposite directions. The spring 18 of the female is indicated in this view.

FIG. 2 is a cross sectional view of rectangular hollow element 2 with the male & female snap action mechanisms.

FIG. 3 is a cross sectional view of interlocking of the elements 1 & 2.

FIG. 4 is a cross sectional view of the semicircular hollow element 3 with male snap mechanism.

FIG. 5 is a cross sectional view of the equilateral triangular hollow element 4 showing the male and female snap action mechanisms.

FIG. 6 is 3 cross sectional view of interlocking of the elements 3 & 4.

FIG. 7 is a cross sectional view of arch hollow element 5 showing male and female snap action mechanisms.

FIG. 8 is a Axial cross sectional view of a cylindrical element 6 with the end closed and showing male & female snap action mechanisms.

FIG. 9 is a radial cross sectional view of the cylindrical element 6 showing snap action mechanism.

FIG. 10 is a side view of the cylindrical element 6 showing the closed end with a male snap action mechanism.

is a cross sectional view of interlocking of the &6.element5 FIG. 12 is a cross sectional view of a pentagonal element 8 showing male and female snap action mechanisms.

FIG. 13 is a cross sectional view of hexagonal element 7 showing male and female snap action mechanisms.

FIG. 14 is a cross sectional view of interlocking of the elements 7 & 8.

FIG. 15 is a cross sectional view of the heptagonal element 9 showing the snap action mechanism.

FIG. 16 is a cross sectional view of the octagonal element 10 showing the snap action mechanism.

FIG. 17 is a cross sectional view of the interlocking position of element 9 & 10.

FIG. 18 is a view of the axle element 12 showing male snap action mechanism.

FIG. 19 is a cross sectional view of the wheel element 11 with female snap action mechanism.

FIG. 20 is a cross sectional view of the element 11 interlocking with element 12.

FIG. I is a cross sectional view of the right angled triangle element 13 showing the snap action mechanisms.

isacrosssectionalviewofiscocelestriangleFIG.22 elementthesnapactionmechanisms.showing FIG. 23 is the cross sectional view of the interlocking position of element 13 and 14.

FIG. 24 is the cross sectional view of a link element 15 with snap action mechanisms.

FIG. 25 is the cross sectional view of the assembly of axle 12 in element 2 and the axle 12 interlocked with wheel element 11.

FIG. 26 cross sectional view of element 2 with only male snap action mechanism. Element 2 has holes of diameter bigger than the diameter of the element 12 so as to accommodate element 12 freely.

FIG. 27 is the bottom view of the female snap action mechanism showing spring 18 in its position.

FIG. 28 is the transverse cross sectional view generally on line 24-24 as show in fig. 27.

FIG. 9 is the top view of the female snap action mechanism with the spring 18 in its position.

FIG. 30 is the transverse cross section view generally on the line 25-25 of fig. 29.

FIG. 31 is the transverse cross section view of the male snap action mechanism along its axis.

DESCRIPTION OF PREFERRED EMBODIMENTS Each of the male or female snap action mechanism is made of a upper half and a lower half. Figure 1 shows the square shape of element 1 in which both upper half of male snap action mechanism 20 and the upper half of the female snap action mechanism 16.22 is a female cavity in which the female member sits on any element, 17 is lower half of the female snap mechanism, 19 is the lower half of the male member. The female snap action mechanism has a spring 18 fitted on to it. Figure 2 shows a different shape that is a rectangular element having the same male & female members.

In Figure 3 the combination of element 1 and 2 is shown. It shows the male snap action mechanism fitment with the female snap action mechanism. In Figures 4,5,7,8,12,13,15, 16,18,19,21,22,24 the different configuration of elements is shown having male & female snap action mechanisms. Figure 9 is a side view of the element 6, a cylinder having male and female snap mechanism radially.

Figure 10 shows the element 6 with a male snap mechanism axially. Figure 11 shows how the cylindrical structural element 6 is enqaged with element 5.

Figure 13 shows how the structural element 7 which is in the shape of hexagon is having male & female elements and figure 12 shows the pentagon type of structural element 8. Figure 14 shows the interlocking of male & female snap action mechanisms of element 7 and 8.

The Interlocking Position is also very clear in figure No.

17,23 and 25. Similarly figure 19 shows the wheel element 11 which is to be fitted with element 12 as shown in figure 20.

Figure 27 shows female snap mechanism in detail with the thespring18explicitlyshowninthisdrawing.positionof Figure 31 clearly shows how the male member is riveted along with the element 2. The lower half of male snap mechanism 19 is joined with upper half 20 of the male snap mechanism by a pressing riveting action at 23.

It should be understood that the forms of the invention shown are representative only, as certain changes may be required without departing from the text of this disclosure. For example spring like snap mechanism may be replaced with snap mechanism made of resilient material, not being spring in totality. Likewise the snap action mechanism can be replaced by any kind of bearing, to perform a similar job of a 3600 rotation.