Stock material or miscellaneous articles – Article of intermediate shape
Patent
1982-09-30
1985-05-14
Epstein, Henry F.
Stock material or miscellaneous articles
Article of intermediate shape
40539, 52DIG10, 428 12, 446488, A47G 3308, G09F 100
Patent
active
045172510
ABSTRACT:
A blank of foldable sheet material for folding a regular octahedron comprises a sheet of foldable material, such as paper, plastic sheet or metal foil, having the shape of a regular hexagon, without interior cuts or exterior tabs. The blank is scored or marked for scoring along lines subdividing said hexagon into 24 equilateral triangles of equal size, each having sides one half the length of a side of said hexagon. The triangles are formed by first marking or scoring along lines extending from opposite apexes of the hexagon to produce six equilateral triangles having sides of the same length as the sides of the hexagon and then marking or scoring along lines connecting the midpoints of adjacent ones of the first produced triangles. Successive folding of apexes of the blank along score lines ending with the tucking of one final flap into another produces an octahedron held together by the folds and final tuck without need for adhesives or other securing means. The sheet of foldable material may a surface imprint or decorative coating on the portions thereof visable when folded into an octahedral shape and may have surface imprints comprising indicia and instructions for folding into an octahedral shape.
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patent: 2633657 (1953-04-01), Warren, Jr.
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patent: 3730818 (1973-05-01), Salinari
patent: 3894352 (1975-07-01), Hooker
patent: 4021950 (1977-05-01), Asija
patent: 4145850 (1979-03-01), Runyon
patent: 4366961 (1983-01-01), Busse
Epstein Henry F.
Mosely Neal J.
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