Fabricating a quilted drainage unit using a flat bed
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United States of America Patent
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Sep 5, 2017
Issued Date -
N/A
app pub date -
Feb 29, 2016
filing date -
Jul 13, 2014
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Abstract
A substantially cylindrical drainage unit for use when buried in soil as part of a wastewater leach field comprises a first plastic bead aggregate mass, optionally with a central perforated pipe, surrounded by a segmented-quilt exterior surface. Quilts are held in place around part or all of a drainage unit by straps, a circumscribing netting sleeve, or by being themselves in the form of tubular sleeves. Preferred rectangular quilt segments contain a second pebble aggregate that is smaller than the first aggregate. Quilts are fabricated by mating two horizontally-moving layers of geotextile and disposing the second aggregate into channels or cavities that are defined by seams that join the layers to each other.
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Cited Art Landscape
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