The present invention relates to a cubic element for construction toys, including three, straight, open-ended channels each formed on an adjacent different face of the cube between two opposite faces of the cube and extending in orthogonal opposite directions to each other (X,Y,Z). Each channel includes a bottom wall and two upwardly extending parallel sidewalls, wherein the width of the bottom wall and the distance between the face which is distal to the channel that is extending orthogonally from the same cube face, and the sidewall adjacent the distal face, are substantially equal.

The present invention relates to a straightly assembled block comprising engaging assembly means configured in male and female types, first ends of which can be coupled to each other, such that male and female piece blocks can be assembled by connecting the same to each other straightly, and the engaging assembly means are improved such that wear is prevented in spite of repeated separation/coupling, thereby maintaining continuous assembly power. To this end, the male and female piece blocks have engaging assembly means, first ends of which protrude in arc shapes, and the second ends of which are coupled to each other. Alternatively, connecting blocks have engaging assembly means formed on both ends thereof in different types. The engaging assembly means formed on the piece blocks or on the connecting blocks comprise a recessed portion and a protruding portion. Each of the recessed portion and the protruding portion has a guide means and a coupling means provided on both coupling surfaces thereof, respectively, the coupling means being guided along the guide means so as to engage, such that the same are connected on the same straight line. An incision hole for an elastic action is formed from a corner of the recessed portion toward the interior, on which a rotating shaft is formed, such that, when the protruding portion is guided and coupled, the incision hole is elastically operated so as to widen the recessed portion in the leftward/rightward outward direction, thereby preventing wear of the engaging coupling means.

A modular wing, adapted to be used on a flying device such as a toy airplane, drone, or other small fixed wing flying device, or form a part of a wind turbine or any other apparatus that requires a wing or blade, that is compatible with all block-based toy systems such as LEGO®, DECOOL® or KAZI®. The modular wing is comprised of a series of modular aerodynamic surfaces that may be suitable for manufacture by a low-cost method such as molding or additive manufacturing such as 3D printing, typically but not necessarily from plastic, to form wing sub elements which, when assembled together, form a wing or blade such as an airplane wing or turbine blade. The modular wing may comprise cambered or symmetric wing shapes. The modular wing may be used in a static display model fully flying aerodynamic aircraft, sailing hydrodynamic boat, or aerodynamic functioning turbine.

A toy brick system is provided having a plurality of bricks each of which has a post extending from first end of a body of the brick and having a socket at a second end. The post in each brick in the plurality is engageable with a socket of an adjacently place brick in a removable rotational engagement enabling curved and angled configuration of assembled structures. Engagement and disengagement from the rotational engagement can only occur at a specific engagement angle between adjacent bricks thereby maintaining the rotational engagement of adjacent bricks once engaged and rotated out of the engagement angle. The bricks are configurable in a linear fashion or with curved exterior walls for forming curved structures.

The invention relates to a toy building element for a modular building game. The toy building element comprises one or more hollow coupling studs for coupling the toy building element to another toy building element in a releasable manner. Each coupling stud extends along a respective longitudinal axis and defines internally an axial through cavity configured to receive, in a removable manner, a locking stud apt to lock the toy building element to another toy building element coupled thereto. Each coupling stud comprises a coupling part and a receiving part for receiving the coupling part of a coupling stud of another toy building element. The coupling part comprises at least a radially flexible portion for engaging/disengaging a receiving part of a coupling stud of another toy building element. The radially flexible portion is configured to cooperate with one said locking engaging the cavity so that its radial bending is limited by the locking stud so as to prevent the coupling part from disengaging from the receiving part of a coupling stud of another toy building element.

A toy construction element is disclosed having a body with at least one projection extending therefrom and a plurality of complementary-shaped recesses formed therein. The recesses extend along at least two different axes and are configured for receiving a corresponding projection from like elements so as to allow like construction elements to be interconnected in three dimensions. The projections and/or recesses may be formed with snap-fit interlocking features whereby the element is configured for interlocking engagement with like elements. The snap-fit interlocking features can include complementary locking formations formed on each projection and each recess. The formations are configured to pass over each other as the projection of one element is received in the recess of another element when like elements are assembled, and the recess is at least in part defined by a resilient component that flexes to resist passage of the formations during assembly and disassembly.

A system for building a load bearing structure for supporting a compressive load, the system including a plurality of wooden members; wherein a protrusion of a second member is locatable within a recess of a first or third member to interconnect the first and second or third and second members together to form the loading bearing structure, wherein the protrusion is not rotatable within the recess, and; wherein the third member has a recess with a depth greater than the height of the protrusion of the second member such that a cavity is formed between an upper inner wall of the third member and a top portion of the protrusion of the second member when the second and third members are interconnected.

Herein is a modular building element that may be combined in a number of ways to form unique articles. The modular building elements may be sold as a kit and marketed as a children's toy. The modular building element may have a front and a back with fasteners disposed on at least one of the front and back. Additional elements such as support elements and connecting elements may further be included to expand upon the functionality of the modular building element.

Disclosed herein is a toy building unit for playing capable of folding from a flat position into a three-dimensional hollow position.

A modular wing, adapted to be used on a flying device such as a toy airplane, drone, or other small fixed wing flying device, or form a part of a wind turbine or any other apparatus that requires a wing or blade, that is compatible with all block-based toy systems such as LEGO®, DECOOL® or KAZI®. The modular wing is comprised of a series of modular aerodynamic surfaces that may be suitable for manufacture by a low-cost method such as molding or additive manufacturing such as 3D printing, typically but not necessarily from plastic, to form wing sub elements which, when assembled together, form a wing or blade such as an airplane wing or turbine blade. The modular wing may comprise cambered or symmetric wing shapes. The modular wing may be used in a static display model fully flying aerodynamic aircraft, sailing hydrodynamic boat, or aerodynamic functioning turbine.