Protective foam layer for activity surfaces
AssigneeTurf Cushion Inc
InventorsJohn Karr, Keith Pavlansky
Life of this patent
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Abstract
Foam pads and method for making foam pads for use under an activity surface which meet or exceed G-max and HIC criteria under ASTM F1292-17 for playground equipment at heights of at least 9 to 12 feet and/or wherein the thickness loss of such pads at approximately one hour after removal of a 75 lb./in.2 load applied to the pad at 25% deflection for one hour pursuant to ASTM D3575-08 Suffix B is less than 7%.
Claims16
A foam pad comprising a pad having a density ranging from about 0.5 pound per cubic foot (lb./ft3) and about 4 lb./ft3, a thickness ranging from about 0.5 inches to about 3 inches, and an HIC rating of less than 1000 and a G-max rating of less than 200 based on ASTM F1292-17 at a maximum fall height of from about 9 feet to about 12 feet.
Dependencies are inferred from the claim text.