Patent ID: 6578814
Filing Date: 2003-06-17
Classification: E04G

Abstract:
An article for forming wet concrete comprising,A hollow box having interconnected sides that together define a triangular shaped lateral cross section of the box, including a hypotenuse side, a base side and a height side, said box being formed from a foldable blank of rectangularly shaped material having parallel lateral sides and having first, second, third, fourth and fifth spaced apart scored folding lines parallel to the lateral sides, said lines defining on the blank from one lateral side to the other in order, first, second, third, fourth, fifth and sixth side-forming wall areas where, when shaped by folding on the scored lines, the third wall area defines the base side, the second wall area defines the height side and the first wall area defines the hypotenuse side of the triangular box, the sixth wall area, folded back upon the fifth wall area, defines a double thickness of material, the fourth wall area overlies the hypotenuse-forming first wall area, and the double thickness of material formed by the fifth and sixth wall areas overlies the height side.