FILTER ELEMENTS FOR BIOLOGICAL FILTRATION ARRANGEMENTS
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United States of America Patent
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Issued Date -
Oct 14, 2021
app pub date -
Jun 21, 2012
filing date -
Jun 22, 2011
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Abstract
A filter element (1) comprising a central tubular body/core (2) and a plurality of radially outwardly directed fins (3) forming the main structure of the element, the radially outwardly directed fins (3) projecting outwardly from said central tubular body/core (2) and whose radial length increases stepwise from each end of the central body or core to a maximum length located centrally of the length of the body or core (2), thereby effectively providing a generally double back-to-back conical appearance, a stiffening ring (8) arranged to encircle with a gap therebetween the body/core (2) at a mid-region thereof and whose plane is perpendicular to the axis of the body or core (2), the central tubular body/core (2) including one or more radially inwardly directed ribs (12).
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