Filter

Details Filter Filter

1994-12-19

1996-08-27

Bushey, C. Scott

Gas separation

Plural serial basically diverse separating media

Plural stages in unitary casing

55484, 96134, B01D 4600

Patent

active

055497209

ABSTRACT:
A pre-filter for an oxygen concentrator having enhanced filtering area. The pre-filter is positioned so that air entering the concentrator's air compressor is filtered to removed particulate contaminants. The pre-filter has an impermeable housing consisting of four walls in a rectangular configuration. There is, within the housing, a first filter pledget of porous filter material and second filter pledget of porous filter material with an air space in-between the pledgets. Each pledget has an exposed filtering surface and a material thickness of porous filter material. The opening of a conduit tube that is in fluid communication with the air compressor is positioned in the air space between the filter pledgets. Air entering the conduit tube passes through one of the exposed filtering surfaces and one material thickness of porous filter material.

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patent: 4881313 (1989-11-01), Artinyan et al.
patent: 4995891 (1991-02-01), Jaynes
patent: 5037460 (1991-08-01), Machado

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