Filter cartridge

Details Filter cartridge Filter cartridge

1991-06-24

1993-03-02

Dawson, Robert A.

Liquid purification or separation

Diverse distinct separators

Including a filter

210315, 210316, 210338, 210342, 210489, B01D 2714

Patent

active

051906511

ABSTRACT:
The invention is an improvement in a known cylindrical, annular fluid filter cartridge of the type having a lower end cap supporting spaced, concentric filter elements. The spaced elements define an effluent path therebetween. In known cartridges of the foregoing type, the inner and outer perimeters of the end cap (or either of them) have a significant circumferential "Perimeter of engagement" which seats into a pocket with friction fit. As a result, significant force is required to remove a cartridge, especially a large cartridge, from the housing. The improvement comprises a channel (either a tube-like riser or a manifold) and a discharge port for receiving effluent, e.g., filtered water, from the effluent path. The discharge port (with its relatively small perimeter of engagement) is configured and arranged for attachment to and detachment from an outlet vent located near the bottom of the cartridge housing. Because of the relatively small engagement perimeter of the discharge port (and the resulting reduced "frictional" forces), even large water-soaked cartridges are much more easily removed from the housing as when cleaning or replacing the cartridge.

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