Pyramid type amusement and educational device

Abstract

Abstract An elongated parallel-sided series of identical forms of similar tetrahedral pyramid shape, molded in solid or hollow section of a rigid plastic material, are flexibly articulated to one another at the adjacent edges of like successive coplanar equilateral triangular bases of said forms, the remaining three sides of each form being identical right or 90* triangles whose base edges equal in length that of the equilateral triangle sides. Successive adjacent base triangle edges of the strip are then in alternating 60* intersecting relation to one another as flexibly articulated by a suitable backing ribbing or tape. The number of said pyramid forms is a whole multiple of four; and appropriate primarily intended manipulations of said forms relative to one another bring base edges of certain of their right triangular side surfaces into edge-to-edge relation to one another in a manner such that four adjacent juxtaposed pyramids will define a cube. Depending upon the number of pyramid forms and their manner of manipulation, a number of different basic modular arrangements of such like individual, flexibly articulated cubes may be set up for one purpose or another. In the alternative, many freeform combinations may be arrived at.

Inventors

• 👤 T Palazzolo

Bibliographic Details