Tetrahedron blocks capable of assembly into cubes and pyramids

Details Tetrahedron blocks capable of assembly into cubes and pyramids Tetrahedron blocks capable of assembly into cubes and pyramids

1980-10-24

1982-06-15

Skogquist, Harland S.

Education and demonstration

Mathematics

Geometry, trigonometry, or physical mathematic model structure

46 24, 434403, A63H 3304

Patent

active

043348700

ABSTRACT:
A series of interrelated sets of tetrahedron blocks. Each set comprises twelve blocks capable of assembly into a rectangular parallelepiped using all twelve blocks, and is also capable of assembly into an eight-block pyramid and a four-block tetrahedron. The pyramid and parallelepiped of all sets are the same height. The tetrahedrons are preferably hollow and each of them has a magnet for each face, e.g., affixed to the interior walls of its faces, the magnets being so polarized that upon assembly into a cube or pyramid, the magnets of facing faces attract each other. Preferably, the blocks are colored in such a way that faces of the same size and shape are colored alike and each size and shape has a different color.

REFERENCES:
patent: 1236234 (1917-08-01), Troje
patent: 2795893 (1957-06-01), Vayo
patent: 2939243 (1960-06-01), Duggar
patent: 3925959 (1975-12-01), Dykes
patent: 4258479 (1981-03-01), Roane

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