Patent ID: 7404689

Claim:
A drainage board system for extending the life of outdoor carpet while enhancing its appearance comprising, in combination: an exterior planar floor surface fabricated of concrete and adapted to receive carpet thereon; a carpet formed in a generally rectangular configuration with edges and fabricated of flexible fibrous material with an upper surface and a lower surface, the upper surface including a decorative pattern, the lower surface adapted to rest flat and in parallel relationship with respect to the floor surface; a plurality of upper patches, the upper patches each being in a square configuration between 1.0 and 3.0 inches on a side with downwardly extending loops of a hook and loop releasable coupling assembly, the patches being attached to the lower surface of the carpet in a symmetric pattern along adjacent edges and spaced from the edges; a rectangular board fabricated of a substantially rigid, moisture resistant polyurea, the board having an upper surface and a lower surface with a thickness of between 0.25 inches and 1.00 inches; a plurality of lower patches, the lower patches each being in a square configuration between 1.0 and 3.0 inches on a side with upwardly extending hooks of a hook and loop releasable coupling assembly, the patches being attached to the upper surface of the board in a symmetric pattern along adjacent edges and spaced from the edges, the symmetric pattern on the patches on the board corresponding to the symmetric pattern of patches on the carpet for the separable coupling therebetween; a plurality of cylindrical projections on the lower surface of the board remote from the patches and extending downwardly for contacting the floor for ventilation and moisture abatement and support, the projections being arranged in linearly aligned rows and columns spaced apart between 0.5 inches and 2.0 inches with an average diameter of between 0.25 inches and 1.00 inches and a thickness essentially equal to the thickness of the board, plus or minus 50 percent; a plurality of rectangular spacers on the lower surface of the board remote from the patches and projections and extending downwardly, the projections being arranged in linearly aligned rows and columns corresponding to the patches on the board, each spacer being in a square configuration between 1.0 and 3.0 inches with a thickness essentially equal to half of the thickness of the patches, plus or minus 25 percent, to facilitate stacking for storage and transportation; and a plurality of apertures extending through the board in linearly aligned rows and columns spaced apart between 0.5 inches and 2.0 inches the apertures in a geometric shape, including conical and cylindrical, with a larger diameter at the upper surface and a smaller diameter at the lower surface and with an average diameter between 0.25 inches and 0.50 inches for functioning with the projections for ventilation and moisture abatement.