Underdrain filter plate installations in automatic backwash filter systems
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United States of America Patent
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-
Apr 8, 1997
Grant Date -
N/A
app pub date -
Feb 26, 1996
filing date -
Feb 26, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Automatic backwash filter systems including a filter tank divided by vertical cell sheets into a multiplicity seriate cells are improved by provision, as retention for underdrain filter plates within the seriate cells, of unique contoured cell sheets having profiled faces each with a lower level, integral, protrusion segment that forms a support ledge for a cell filter plate and a higher level, integral, protrusion segment that provides a filter plate holddown feature in combination with filler members and horizontal retention bars.
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