Surfacing material

Claim 1

SURFACING MATERIAL COMPRISING A FIRM FLEXIBLE MAT HAVING A SHORT UNIFORM NAP, A THICK MATSUPPORTING LAMINATION OF FIRM SPONGE RUBBER CHARACTERIZED BY LIMITED COMPRESSIBILITY AND RESILIENCE, A COMPARATIVELY THIN INTERMEDIATE RESILIENT CUSHIONING LAMINATION OF SPONGE RUBBER OF LESSER DENISTY AND GREATER COMPRESSIBILITY THAN SAID MAT-SUPPORTING LAMINATION, A FIRM STRONG BASE LAMINATION HAVING LIMITED FLEXIBILITY AND NEGLI GIBLE COMPRESSIBILITY, AND MEANS FOR SECURING SAID MAT AND LAMINATIONS IN SUPERIMPOSED CONTINUOUS FACE CONTACTING ENGAGEMENT, SAID LAMINATIONS EACH HAVING A PLURALITY OF DRAINAGE PASSAGES THEREIN COMMUNICATING WITH PASSAGES IN ADJACENT LAMINATIONS, THE PASSAGES IN THE UPPER LAMINATION HAVING A CROSS-SECTIONAL SIZE SUFFICIENT TO PERMIT DRAINAGE BUT INSUFFICIENT TO MATERIALLY ALTER THE REACTION OF THE LAMINATION TO IMPACT, AND WICKS EXTENDING THROUGH THE PASSAGES IN SAID INTERMEDIATE AND BASE LAMINATIONS.