Patent ID: 7484708
Filing Date: 2009-02-03
Classification: B28B

Abstract:
1. A mold assembly for the production of a multitude of concrete paver blocks of varied contour, said mold assembly comprised of a) a monolithic mold fabricated of foamed polystyrene having a density of about 1 pound per cubic foot and easily destructable following one time use, said mold having a configuration defined by flat upper and lower surfaces in parallel juxtaposition spaced 2 to 4 inches apart by a continuous outer boundary sidewall, and a number of apertures produced by a CNC milling machine, each aperture defined by a circuitous perimeter sidewall orthogonally disposed to said upper and lower surfaces, said perimeters being of varied contour amongst the number of apertures and spaced apart at least one inch from contiguous apertures, said varied contour being such as to produce concrete blocks which fit together in the nature of a jigsaw puzzle with a uniform gap between contiguous blocks of 0.20 to 0.40 inch, b) a flat rigid floor panel adapted to securely engage the lower surface of said mold, and c) releasable securing means for urging said floor panel against the lower surface of said mold.