Filter of depth layer type

Details Filter of depth layer type Filter of depth layer type

1988-08-18

1990-11-06

Fisher, Richard V.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

2104971, 55485, 55489, 55503, 55509, B01D 2946

Patent

active

049684256

ABSTRACT:
A filter of depth layer type comprises a generally cylindrical filter body formed by laminating filter elements each in the form of a thin sheet of a filtering material having a central hole, and these central holes provide a conduit extending in the axial direction through the filter body. The filter body has a density distribution in which the density is lowest at the outer peripheral area sewing as an inlet for a fluid to be filtered and becomes progressively higher toward the conduit to serving as an outlet for the fluid to be filtered.

REFERENCES:
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patent: 2604994 (1952-07-01), Vocelka
patent: 2697524 (1954-12-01), Foust
patent: 2816663 (1957-12-01), Kovacs et al.
patent: 2863561 (1958-12-01), Just et al.
patent: 2902164 (1959-09-01), Dornauf
patent: 3398834 (1968-08-01), Nuttall et al.
patent: 3537592 (1970-11-01), Ogden et al.
patent: 4632755 (1986-12-01), De Graffenreid
patent: 4642182 (1987-02-01), Drori

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