Filter folded in a zig-zag configuration

Details Filter folded in a zig-zag configuration Filter folded in a zig-zag configuration

1990-01-05

1991-12-10

Dawson, Robert A.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

210508, 55475, 55500, 55DIG5, 493333, 493941, B01D 2907

Patent

active

050715550

ABSTRACT:
An air filter comprising a sheet of filter material folded in a zig-zag configuration. A hardenable material is dispensed in a flowable state onto the sheet. The hardenable material has a varying thickness such that upon hardening, it holds the folds of the sheet apart in a selected orientation. The hardenable material may comprise glue to also secure the folds together. An air penetrable sheet can be secured to the fold edges at one or both sides of the filter.

REFERENCES:
patent: 3752321 (1973-08-01), McLaren
patent: 3880627 (1975-04-01), Morton
patent: 3914116 (1975-10-01), Westlin
patent: 4135900 (1979-01-01), Westlin et al.
patent: 4227953 (1980-10-01), Wasielewski et al.
patent: 4615804 (1986-10-01), Wright
patent: 4728426 (1988-03-01), Rudinger et al.

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