Patent ID: 8424261

Claim:
A composite construction block for use in the construction of structures, constructed from a plurality of said construction blocks, the block comprising: a cementitious body having a bottom surface, a top surface, end surfaces, a first outer surface which forms part of an outer surface of said structure, an opposite second outer surface which forms part of an inner surface of said structure and first and second opposing inner surfaces which form an internal linear space therebetween; and a solid insulating element having a first outer face and a second outer face and which is received and retained embedded in said internal linear space, said insulating element provides thermal insulation for said structure and thermally isolates said first and second outer surfaces of said cementitious body from said opposing second and first inner surfaces respectively of each of said blocks of said structure; wherein each of said blocks is manufactured in a mold from a cementitious matrix which is poured about said insulating element to form said composite construction block by integral attachment between said cementitious body and said insulating element, said insulating element extending along a majority of a height dimension of said block and along a majority of a length dimension of said block; and wherein said first and second outer surfaces of said insulating element each include a plurality of dovetail key in lock formations of constant cross section which enable locking of said insulating element to respective first and second inner surfaces of said cementitious body of said block, and wherein said dovetail formations on said first and second outer faces of said insulating element each extend along a height dimension from said bottom surface of said cementitious body to said top surface of said cementitious body, and wherein said insulating element is disposed linearly and oriented in a direction along a central axis of said block, and wherein the width of said insulating element at its widest point is less than one third of the overall width of said block.