Self-supporting pump-filter apparatus for above-ground...

Liquid purification or separation – Structural installation – Closed circulating system

Reexamination Certificate

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Details

C210S206000, C210S437000, C422S277000

Reexamination Certificate

active

07005062

ABSTRACT:
A disposable filter cartridge for a pump-filter assembly having a one piece integral pump-filter housing. The filter cartridge includes opposed upper and lower end caps and a tubular skeletal core member open at both ends. A pleated filter medium surrounds the core member and is supported and retained between the opposed end caps. The end caps further include integral flexible gaskets dimensioned to engage pipe fittings of more than one size. A water treatment medium may be deposited within a central portion of the core member. In combination with the skeletal core, a platform means projects radially inwardly from the central core to form a cage-like structure adapted to support a variety of water treatment media. The entire filter cartridge is removable from the housing and may be replaced as desired.

REFERENCES:
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patent: 3357563 (1967-12-01), Sicard
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patent: 6117332 (2000-09-01), Hatch et al.
patent: 6325926 (2001-12-01), Hansen
patent: 6416662 (2002-07-01), Schmidt
patent: 6475379 (2002-11-01), Jousset et al.
patent: 6626299 (2003-09-01), Brown et al.

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