Drainage mat
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United States of America Patent
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May 27, 2014
Grant Date -
Jul 19, 2012
app pub date -
Jan 17, 2011
filing date -
Jan 17, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A drainage mat for use in building structures, particularly in exterior walls and roofing, to improve drainage and ventilation within such structures. The drainage mat includes a web of extruded polymer monofilaments that are heat welded at junctions to form a matrix of tangled monofilaments. The web includes on its front face an alternating array of ridges and planar regions, each ridge having a substantially trapezoidal shape with a top surface and a base, the width of the top surface being less than the width of the base.
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