Filters

Details Filters Filters

1978-02-02

1979-06-12

Sever, Frank

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

55482, 55485, 55487, 210492, 210503, B01D 2504, B01D 2516

Patent

active

041579682

ABSTRACT:
A filter element for filtering air, other gases and liquids comprises two permeable supporting shells arranged one within the other, and a filter medium filling the space between the shells. The filter medium is formed by a plurality of layers of different filter gauge. The finest filter layer is covered by a coarser filter layer at least on its side which is, in use, towards the inlet for the fluid to be filtered. Preferably the filter medium includes three layers, the middle layer of which is the finest filter consisting of binder-free microfiber fleece and the other two layers are similar coarser filters consisting of binder-free supporting fiber fleece.

REFERENCES:
patent: 1892210 (1932-12-01), Gordon
patent: 2771153 (1956-11-01), Hennig
patent: 3567619 (1971-03-01), Brown
patent: 4058463 (1977-11-01), Bartik

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