Hollow form, polyhedron block element formed of sheet material

Details Hollow form, polyhedron block element formed of sheet material Hollow form, polyhedron block element formed of sheet material

A - Human Necessities

63

H

46/11, 46/5

A63H 33/16 (2006.01)

Patent

CA 1153890

HOLLOW FORM, POLYHEDRON BLOCK ELEMENT FORMED OF SHEET MATERIAL ABSTRACT OF THE DISCLOSURE There is disclosed a hollow form building block useful for toys as a constructional block for play houses, forts, and the like, which is formed of inexpensive sheet material such as corrugated cardboard. The block element is a hollow-form, polyhedron that is provided with end walls, one of which has a polygonal aperture and the other of which has a coacting polygonal raised rim that is formed by folded tabs cut from the end wall and coacting tabs folded from an underlying end wall. The raised rim coacts with the apertures of other block elements to provide element-to- element interconnecting means and the raised rim also func- tions to secure the hollow-form block structure of the as- sembled, folded block element. -1-

363294

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