Diffuser for an aeration system
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United States of America Patent
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Aug 23, 2011
Grant Date -
Jun 3, 2010
app pub date -
Feb 3, 2010
filing date -
Jun 19, 2008
priority date (Note) -
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Abstract
A diffuser for an aeration system includes a base, a valve member, and a diaphragm. The diaphragm has a central portion, a peripheral portion, and a surrounding segment. The surrounding segment is interposed between the central portion and the peripheral portion, and includes a base web layer and a porous foam layer. The base web layer includes a plurality of fibrous filaments arranged to form a textured structure with a plurality of pores. The porous foam layer is disposed on the base web layer.
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