Liquid purification or separation – Structural installation – Grated inlet surface drain
Reexamination Certificate
2006-03-21
2006-03-21
Cintins, Ivars C. (Department: 1724)
Liquid purification or separation
Structural installation
Grated inlet surface drain
C210S266000, C210S282000, C210S283000, C210S284000
Reexamination Certificate
active
07014755
ABSTRACT:
A filter/plug drain assembly for insertion into a drain so as to prevent the passage of selected contaminants through the drain is disclosed. The filter/plug assembly includes stacked layers of filter, filtering/plugging and plugging material. The filter/plug assembly has alternative internal flowpaths configured to provide different plugging speeds when exposed to ongoing low levels of selected contaminants.
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Barrett Fiona Elizabeth
Muir Iain
Barrigar Robert H.
Cintins Ivars C.
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