Three-dimensional structures of sheet material
OwnerHoward M. Bromberginventor
Life of this patent
Estimating the term…
Abstract
A construction assembly in which a plurality of interconnected three-dimensional elements each has at least one wall and the elements are connected by loops or tongues of material of one element extending into windows of another element and held in place by pins of sheet material engaging through the loops and bearing upon the walls formed with the window from the side opposite that through which the loop was inserted.
Claims18
A three-dimensional structure comprising at least one element formed of a flexible sheet material and formed with at least one loop delimited between a pair of spaced-apart slits in said sheet material and extending from one side of a sheet material through a window therein to project on an opposite side of the sheet material provided with said window, and a pin extending transversely through said loop on said opposite side.
A construction assembly comprising at least one three-dimensional element composed of paper or paperboard and connected to at least one other element of paper or paperboard, said three-dimensional element having a dihedral tongue formed at a corner thereof, said other element having a window receiving said tongue and formed in a wall or corner of said other element, and a pin formed by a folded paper or paperboard strip fitting into said dihedral tongue within said other element to secure said elements together.
A construction assembly comprising a plurality of interconnected three-dimensional elements each bent or folded from a blank of die cut sheet material into a column shape and having at least one wall, one of said elements having a rectangular window, the other of said elements having a corner formed with a dihedral tongue projecting through said window;
- a pin fitting into said dihedral tongue within said one of said elements to secure said elements together;
- and slits formed along edges of said elements to permit interconnection of said elements with other elements of sheet material.
Dependencies are inferred from the claim text.