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.

The building toy includes at least one basic element and at least one connecting pin. The basic element has a body where in the wall there is at least one connecting opening led perpendicularly onto the wall. The connecting opening runs through the body of the basic element as a transitory cavity and the connecting opening is designed for an insertion of the connecting pin. All connecting openings in the body are mutually spatially skew. The pairs of connecting openings from each wall run through the body to lie in mutually perpendicular and rotated planes and the distance of the connecting openings if each pair is identical and it is at least the length of a diameter of the connecting openings. The pairs in the central zone of the body avoid each other without the cavities of the connecting openings colliding mutually.

A card-connector is provide for the construction 3-dimensions objects with cards, such as playing cards. The card connector can include a card receiving portion and an interconnection portion. The card receiving portion can be bifurcated to define a first side portion, a second side portion, and a slot. The interconnecting portion can have at least one of a ball portion or socket portion of a ball and socket joint, where two interconnecting portion can be connected to form a ball and socket joint. Multiple card connectors can be joined together with the interconnecting portions to create 3-dimensional objects with the cards.

The invention relates to a modular education and toy block having at least one piece 10 having a body (11), a jointer (20) working with comb fitting principle (finger joint), having recesses and/or protrusions that each of them is in triangular on at least one surface of the joinder (20) which is appropriate to form new pieces (10) by combining the piece (10) with another piece (10).

A device for cutting and bending a hollow elongate tube. A measuring subassembly is adapted for measuring a desired size of the tube. A cutting subassembly is adapted for cutting the tube to the desired size. A bending subassembly is adapted for bending the cut tube to a desired angular orientation. The bending subassembly includes a base controlling a radius of a bend to be formed in the cut hollow elongate tube, and a user grippable handle. The user grippable handle is configured to enable a user to rotate the cut hollow elongate tube, relative to the round base, to form the bend in the cut hollow elongate tube.

A device for cutting and bending a hollow elongate tube. A measuring subassembly is adapted for measuring a desired size of the tube. A cutting subassembly is adapted for cutting the tube to the desired size. A bending subassembly is adapted for bending the cut tube to a desired angular orientation. The bending subassembly includes a base controlling a radius of a bend to be formed in the cut hollow elongate tube, and a user grippable handle. The user grippable handle is configured to enable a user to rotate the cut hollow elongate tube, relative to the round base, to form the bend in the cut hollow elongate tube.

A modular construction system comprising: a main connector having a body and an integrally formed rod, the rod having a rod tubular body, a rod insertion end, and a rod hollow chamber traversing the rod from the rod tubular body through the rod insertion end, and wherein the rod is radially disposed about the body; a plurality of main bars, the main bars having a first receiving end, a main bar tubular body, a second receiving end, a main bar hollow chamber traversing the main bar from the first receiving end through the main bar tubular body to the second receiving end, at least three main bar longitudinal sides, a plurality of apertures on the main bar longitudinal sides, and at least three main bar grooves between adjacent main bar longitudinal sides, the main bar grooves being parallel with the main bar tubular body and the main bar hollow chamber.

A kit for a construction toy includes at least two construction blocks, where each construction block includes at least one hole, the at least one hole includes a ridged outer ring and at least one peg sized to fit within the at least one hole to connect between the at least two construction blocks with a cam-releasable snap-on connection, the at least one peg includes at least 2 partially ridged outer rings to engage with the ridged outer ring of the at least one hole when the at least one peg is inserted into the at least one hole to securely hold the at least two construction blocks at a non-parallel angle.

A play center including a number of frames secured to each other to at least partially define substantially vertical walls of the outdoor play center, each frame having two or more openings, and a number of panels, each panel having a body thereof, the panels being receivable in selected ones of the openings. Each of the openings is partially defined by one or more elongate side walls of each frame. Each panel includes one or more flanges extending from the body over at least a receiving portion of the side wall. The play center also includes a number of fasteners for fastening the flanges to the receiving portions.

A play center including a number of frames secured to each other to at least partially define substantially vertical walls of the outdoor play center, each frame having two or more openings, and a number of panels, each panel having a body thereof, the panels being receivable in selected ones of the openings. Each of the openings is partially defined by one or more elongate side walls of each frame. Each panel includes one or more flanges extending from the body over at least a receiving portion of the side wall. The play center also includes a number of fasteners for fastening the flanges to the receiving portions.