Liquid purification or separation – Structural installation – Closed circulating system
Reexamination Certificate
2005-04-05
2005-04-05
Prince, Fred G. (Department: 1724)
Liquid purification or separation
Structural installation
Closed circulating system
C210S232000, C210S315000, C210S484000, C210S489000, C210S493100
Reexamination Certificate
active
06875346
ABSTRACT:
A filter cartridge for filtering impurities and the like from a swimming pool or other body of water is provided. The filter cartridge is positioned in a receptacle for receiving water and for recirculating it back to the pool. The filter cartridge includes a core communicating with the recirculating system and having a plurality of openings therein communicating with a supporting frame located around the core and affixed thereto. The frame has a multiplicity of openings therein and a plurality of undulations extending therealong. A flexible sleeve is located around the frame and is of sufficient size to assume the contour of the frame when water is supplied from the exterior of the sleeve to the interior of the core, thereby providing a maximum filtering surface. The sleeve has elastic bands around both ends for drawing the ends together around the core beyond the ends of the frame. The sleeve can be easily removed for cleaning or replacement.
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Fox Diane N.
Fox Matthew A.
Gutchess, Jr. Allen D.
Prince Fred G.
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