Filter element with zig-zag pleats

Details Filter element with zig-zag pleats Filter element with zig-zag pleats

1986-12-08

1988-05-24

Fisher, Richard V.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

210509, 55500, 55521, 55529, 55DIG42, B01D 2706

Patent

active

047464321

ABSTRACT:
A filter element has a generally ring-like structure which basically comprises a plurality of generally radial sections circumferentially arranged to define a central space. Each radial section has a plurality of circumferentially zigzag pleats formed from a ribbon of a filtering sheet material. The radial sections are circumferentially connected such that radially inwardly open generally radial spaces and radially outwardly open generally radial spaces are defined. The radially inwardly open radial spaces are closed at the axially opposite ends by end walls. Fluid to be filtrated can enter the radially outwardly open radial spaces and then passes through the zigzag pleats into the radially inwardly open radial spaces and thus into the central space. The ring-like structure has many modifications.

REFERENCES:
patent: 1728305 (1929-09-01), Raney
patent: 2298980 (1942-10-01), Sloan et al.
patent: 3127341 (1964-03-01), Abeles
patent: 3280985 (1966-10-01), Czerwonka
patent: 3417551 (1968-12-01), Bonell
patent: 3448862 (1969-06-01), Kudlahy
patent: 3591010 (1971-07-01), Pall
patent: 4154688 (1979-05-01), Pall
patent: 4640779 (1987-02-01), Taki et al.

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