CUBIC LOGIC TOY Russian patent published in 2008 - IPC A63F9/12 

FIELD: puzzle-type toys.

SUBSTANCE: toy is made in the form of cubic body having N layers in each direction of three-dimensional rectangular system of coordinates. Each of said layers consists of a plurality of individual members whose flat sides adapted for rotation and defining part of body outer surface are colored, or provided with images, letters or figures. For forming geometric shape of inner surfaces of body individual members, apart from said flat surfaces and concentric spherical surfaces having centers coinciding with geometric center of said body, minimum number of regular conical surfaces k are provided on each semi-axis of said rectangular system of coordinates, with axes of said regular conical surfaces coinciding with respective semi-axes of said rectangular system of coordinates. For the first innermost conical surface, when its apex coincides with body geometrical center, generatrix angle φ₁ exceeds 54.73561032 deg, and if its apex is offset by negative portion of semi-axis, generatrix angle may be slightly smaller than 54.73561032 deg, while for subsequent conical surfaces, their generatrix angles are gradually increasing, φ_k>φ_k-1>...>φ₁, with number N of layers corresponding to number of regular conical surfaces k.

EFFECT: increased entertaining effect provided by movement of members with large number of layers.

382 dwg