Compression seal canister

Details Compression seal canister Compression seal canister

1989-04-27

1991-06-11

Hart, Charles

Gas separation

With separating media bypass or system gas pressure relief

Valved bypass means

55502, 55521, B01D 5000

Patent

active

050229010

ABSTRACT:
A pleated paper filter is installed in a gas mask filter canister without the use of adhesives. The paper filter has an annular sealing ring around it of polyurethane. The polyurethane sealing ring has an outer downwardly tapered face that is a force fit inside the canister housing. A retainer on top of the pleated paper filter element has a peripheral flange that engages the seal above the pleated paper and restricts its inward deformation, so that the sealing force between the seal and the wall of the housing is very high.

REFERENCES:
patent: 3296781 (1967-01-01), Schumann
patent: 3385034 (1968-05-01), Farr
patent: 4236901 (1980-12-01), Kato et al.
patent: 4278455 (1981-07-01), Nardi
patent: 4543112 (1985-09-01), Ackley et al.
patent: 4714486 (1987-12-01), Silverthorn

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