Patent ID: 6962316

Claim:
A concrete forming panel comprising: a face plate having a front side and a rear side; and a frame secured to said face plate and including at least one elongated frame member disposed in such a manner that its longitudinal axis extends generally parallel to the plane of said face plate, said frame member having a front endwall adjacent said face sheet, a rear endwall spaced rearwardly from said front endwall, and a pair of transversely spaced, opposite sidewalls extending between said endwalls, said frame member further having a plurality of elongated, longitudinally extending, hollow internal chambers including a front chamber generally adjacent said face sheet and a rear chamber spaced rearwardly from said front chamber, said front and rear chambers being separated by transversely extending central wall structure that interconnects said sidewalls, said plurality of chambers further including a third elongated, longitudinally extending, hollow internal chamber between said front and rear chambers, said central wall structure including a pair of transverse walls on opposite, front and rear sides of the third chamber, said frame member further having a plurality of holes extending transversely therethrough for receiving coupling parts, each of said holes passing through said third chamber and through said opposite sidewalls of the frame member.