Triangular faced polyhedrals formed from end interconnected fold

Details Triangular faced polyhedrals formed from end interconnected fold Triangular faced polyhedrals formed from end interconnected fold

1980-04-07

1984-01-24

Friedman, Carl D.

Static structures (e.g., buildings)

Openwork; e.g., truss, trellis, grille, screen, frame, or...

Components adjustably or collapsibly connected

52732, 52DIG10, 46 31, 434211, E04H 1218

Patent

active

044268211

ABSTRACT:
A structural element in rectangular form folded along its longitudinal center forming a truss element in triangular faced polyhedrals when end edges of the structured element are connected to the corresponding adjacent, respective, end edges of like structural elements in an assembled polyhedral. The fold in the structural element assumes a dihedral angle well under 180.degree., approximating 110.degree., with the truss element used in forming a four triangular faced tetrahedron, 90.degree. with the truss element used in a cube, although this is an unstable structure in not presenting the structural shape integrity attained inherently with truss elements used in triangularly faced polyhedrals. Further, the structural element assumes a dihedral angle approximating 75.degree. with the truss element used in forming an eight triangular faced octahedron, and approximately a 42.degree. fold in the truss elements forming a twenty triangular faced icosahedron.

REFERENCES:
patent: 1198524 (1916-09-01), Cunliffe
patent: 2920846 (1958-01-01), Lingafelter
patent: 3120078 (1964-02-01), Bessinger
patent: 3305255 (1967-02-01), Henderson
patent: 3769772 (1973-11-01), Oetiker
patent: 4212130 (1980-07-01), Walker

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