Cushion tennis court surface
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United States of America Patent
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Issued Date -
Sep 4, 2008
app pub date -
Nov 21, 2007
filing date -
Nov 21, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A padded surface for tennis courts (adhered over surface foundation such as asphalt or concrete) that includes a soft padding layer including granulated SBR rubber added to a polyurethane elastomer, and a top wear layer with a sand dispersion. The polyurethane elastomer is formed by mixing a first component of polypropylene glycol, castor oil, silica, iron oxide pigment, a molecular sieve, a UV stabilizer, and a catalyst, with a second component formed of polypropylene glycol and methylene diphenyl diisocyanate. The top wear layer comprises any one from among a group consisting of a water-based urethane, acrylic, or urethane-acrylic hybrid intermixed with sand in a dispersion. The resulting tennis surface provides an optimum balance of physical properties needed for the performance of the surface, despite a wide range of temperatures, and the thickness can be varied as desired to comply with ITF shock absorption rates of 13-20% and to suit customer preferences.
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