Radial flow disk filter

Claim 1

A filter comprising a plurality of fluid pervious filter elements, each of said elements being comprised of a filter paper and having a pair of oppositely disposed side surfaces, said oppositely disposed surfaces being impressed with a grid pattern comprising a plurality of intersecting grooves, said elements having inner and outer peripheries, said elements being in compression and stacked one upon another with the land areas between said grooves in contact surface-to-surface; a fluid pervious outer wrap adhesively bonded to the outer peripheries of said elements to maintain the outer peripheries of the elements in fixed relationship with respect to each other and to maintain the elements in compression and control the depths of the grooves; a fluid pervious tube extending through said stacked elements and being in contact with the inner peripheries thereof; and an end cap on each end of said stack of elements, said end caps contacting said tube and outer wrap and respectively contacting the outwardly disposed surface of the filter element defining the adjacent ends of said stack, at least one of said end caps having a discharge port therein which communicates with the interior of said tube.