UNIT FOR FORMING SPATIAL CONSTRUCTIONS, SUCH AS PUZZLES Russian patent published in 1998 - IPC

FIELD: puzzle-type toys. SUBSTANCE: unit has basic member made in the form of "cradle", boat or "Napoleon's hat". Cross sections of side faces and longitudinal sections of end faces are arranged so as to define right angle between them. Unit is made from two similar basic members interconnected by means of truncated irregular pyramid so that longitudinal axes of basic members are extending perpendicular and intersecting one with another. Surface of one outer side face of first basic member, embraced during folding of blank to obtain puzzle construction, is joined with surface of one end face embracing mentioned outer side face during folding of inner faces of second basic member, with mentioned faces having one common point. EFFECT: simplified construction, wider range of spatial transformations of puzzle and increased entertaining effect. 2 cl, 24 dwg