Filter medium

Details Filter medium Filter medium

1992-01-24

1993-06-29

Loney, Donald J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428 72, 428 76, 428120, 428166, 428172, 428178, 428179, 428913, 428212, 55482, 55486, B32B 300, B01D 5000

Patent

active

052233251

ABSTRACT:
A fluid-permeable assembly for uniformly contacting a fluid with a bulk material has two mirror-symmetrically interfitting mats each having a generally planar fluid-permeable carrier web, another fluid-permeable web defining an array of protrusions uniformly distributed over the respective planar web and each forming a respective pocket and respective masses of a fluid-permeable mobile bulk material filling the pockets of the mats. Each of the protrusions is flanked in a longitudinal direction of the respective mat and in a transverse direction thereof by recesses complementary to the protrusions and the protrusions and the recesses of each mat are arrayed thereon in criss-cross patterns. The mats are oriented with the protrusions of one of the mats fitting snugly into and filling the recesses of the other of the mats and the carrier webs are uniformly spaced apart over the assembly to define a body of uniform fluid permeability.

REFERENCES:
patent: 3544417 (1970-12-01), Corzine
patent: 4250172 (1981-02-01), Mutzenberg

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