High performance gas filter assembly

Details High performance gas filter assembly High performance gas filter assembly

1988-09-26

1989-10-31

Chiesa, Richard L.

Gas separation

Two or more separators

Plies or layers of different characteristics or orientation

55487, 55528, B01D 5000

Patent

active

048774332

ABSTRACT:
The high-performance filter assembly has a filter paper made of synthetic or glass fibers and a fine particle checking member provided on the air outlet surface of the filter paper so as to overlap each other. The fine particle checking member is a thin microporous film preferably comprised of expanded porous PTFE. The assembly also has a breathable reinforcing paper member laminated or bonded to the particle checking number, in which this entity is further bonded or laminated to the air outlet surface of the filter paper.

REFERENCES:
patent: 2826265 (1958-03-01), De Woody
patent: 2933154 (1960-04-01), Lauterbach
patent: 3003643 (1961-10-01), Thomas
patent: 3505794 (1970-04-01), Nutter et al.
patent: 3675403 (1972-07-01), Ruffo
patent: 4187390 (1980-02-01), Gore
patent: 4259096 (1981-03-01), Nakamura et al.
patent: 4324574 (1982-04-01), Fagan
patent: 4478620 (1984-10-01), Tamura

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