Spiral-wound filter

Details Spiral-wound filter Spiral-wound filter

1971-04-22

1976-06-08

Hart, Charles N.

Liquid purification or separation

Filter

Within flow line or flow line connected close casing

210487, 210494R, 210497R, B01D 2700

Patent

active

039620972

ABSTRACT:
A filter unit formed by spirally winding a multi-layer material around a core to form a generally cylindrical construction having two opposing spiral end surfaces. The multilayer material has at least two filter layers and at least two spacer layers formed from a material with a high void volume. The multi-layer material need not include a fluid-impermeable layer. The layers are arranged and adhered along the lengthwise and widthwise edges so that, in use, unfiltered fluid passing through one spiral surface of the filter unit into one spacer layer must pass through a filter layer prior to passing out of the construction through the opposing spiral end surface.

REFERENCES:
patent: 1872430 (1932-08-01), Ericson
patent: 2322548 (1943-06-01), Sigmund
patent: 2883058 (1959-04-01), Jaume
patent: 3510004 (1970-05-01), Hoeltzenbein

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