Structure of filter members
AssigneePrecision Mecanique Labinal
InventorPierre Etienne Bessiere
Life of this patent
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Abstract
A filter structure comprising a support and a porous folded sheet having a plurality of cooperating groups of corrugations, wherein the folds of one group overlap at least in part the folds of the adjacent group and have a uniform thickness, length and substantially parallel fold apex lines. On opposed sides, the folded sheet has at least two borders each of which borders has a single group of folds terminating in a frontal edge located in a plane substantially perpendicular to the apex lines of the folds. The borders extend outwardly of the cooperating groups of the corrugations to form an area for contact with the support wherein the borders may be embedded by seal means.
Claims29
A filter structure comprising a support and a porous folded sheet having a plurality of cooperating groups of corrugations, the folds of one group overlapping at least in part the folds of the adjacent group and having uniform thickness, length and substantially parallel fold apex lines, said folded sheet having at least two borders each having a single group of folds terminating in a frontal edge located in a plane substantially perpendicular to the apex lines of the folds, the folds of each of said borders extending outwardly of said cooperating groups of corrugations to form an extended area for contact with said support and seal means for embedding said border areas fixedly to said support.
Dependencies are inferred from the claim text.