The application relates to a field of object connection and in particular, relates to a basic connecting block and a connecting block group. The basic connecting block includes a connecting block body, wherein at least one protrusion corner is provided on one side of the connecting block body and same number of inward recesses as the protrusion corner are provided on an opposite side of the connecting block body, and wherein a surface contour of the protrusion corner is consistent with that of the inward recess, the protrusion corners are connected with each other and the inward recesses are communicated with each other.

A writing instrument, comprising a tubular body having a longitudinal axis with a first and a second end, and with an opening arranged in the first end; a first building block having a body part with a substantially plane surface and one or more coupling knobs extending from the substantially plane surface, and where the first building block is fixed onto the outside of the tubular body so that the coupling knobs extend away from said longitudinal axis.

A toy system includes at least one piece having a first shape defined by a central body and three sets of two protrusions extending outward from the central body, and at least one piece having a second shape defined by a central body and four sets of two protrusions extending outward from the central body, the pieces respectively defined by at least one flat surface and at least one flat sidewall, the sets of the two protrusions defining a respective cavity having a width substantially equivalent to the width of one of the protrusions, at least some of the protrusions respectively having at least one end that is rounded at a geometry that minimizes any potential harm if the protrusion came into contact with a human body.

A toy system includes at least one piece having a first shape defined by a central body and three sets of two protrusions extending outward from the central body, and at least one piece having a second shape defined by a central body and four sets of two protrusions extending outward from the central body, the pieces respectively defined by at least one flat surface and at least one flat sidewall, the sets of the two protrusions defining a respective cavity having a width substantially equivalent to the width of one of the protrusions, at least some of the protrusions respectively having at least one end that is rounded at a geometry that minimizes any potential harm if the protrusion came into contact with a human body.

The present invention includes: a base section configured such that, taking the unit edge length D1 to be 1 and a cube expressed as 1×1×1 to be one unit size, the base section has a parallelepiped shape in which one or more 1-unit sizes are conjoined, and is composed of an open, hollow face taken to be the bottom, four lateral walls 3B, and a roof 3A; and cylindrical projections having a cylindrical shape and provided on the outer face of one or more of the roof 3A and the lateral walls 3B, with a diameter D2 being equal to or greater than 0.4 but less than 0.6 with respect to the unit edge length D1, and a height being (1−diameter)×(0.4 to 0.5 inclusive).

The present invention includes: a base section configured such that, taking the unit edge length D1 to be 1 and a cube expressed as 1×1×1 to be one unit size, the base section has a parallelepiped shape in which one or more 1-unit sizes are conjoined, and is composed of an open, hollow face taken to be the bottom, four lateral walls 3B, and a roof 3A; and cylindrical projections having a cylindrical shape and provided on the outer face of one or more of the roof 3A and the lateral walls 3B, with a diameter D2 being equal to or greater than 0.4 but less than 0.6 with respect to the unit edge length D1, and a height being (1−diameter)×(0.4 to 0.5 inclusive).

An over-molded removable posable bendable toy system may have at least two end components anchored to the ends of a posable component. The over-molded removable posable bendable toy system may also have one or more body components movably engaged to the posable component to permit movement of the one or more body components between the at least two end components. An exemplary removable posable bendable toy may be removed from one toy and used in any other toy.

The invention relates to a method for assembling an arrangement. The invention also relates to a corresponding assemblable arrangement. For the arrangement according to the invention, there are at least two groups of individual elements and each group comprises at least two individual elements. For each group of at least two elements within one group of elements, the at least two elements can be fitted together. Further, the at least two elements of one group can be fitted together with at least two elements of another group. Each group of elements forms a layer of the arrangement. The arrangement, when assembled, forms a three dimensional object.

The invention relates to a three-dimensional tile, of metal or plastic, having at least one face (1) with an octagonal socket (2) and another face (1) with an octagonal projection (3). Each tile is joined in this way with a similar tile, forming structures in space. The octagonal socket (2) has an inner embossed cord (7) miming along it to which a tooth (6) carried on the straight sections (4), which together with the corner sections (5) form the octagonal projection (3), attaches. The 3D tile can be used to create structures of both aesthetic and utility nature.

The invention relates to a three-dimensional tile, of metal or plastic, having at least one face (1) with an octagonal socket (2) and another face (1) with an octagonal projection (3). Each tile is joined in this way with a similar tile, forming structures in space. The octagonal socket (2) has an inner embossed cord (7) miming along it to which a tooth (6) carried on the straight sections (4), which together with the corner sections (5) form the octagonal projection (3), attaches. The 3D tile can be used to create structures of both aesthetic and utility nature.