Sorbent type filter assembly for a respirator and method of maki

Details Sorbent type filter assembly for a respirator and method of maki Sorbent type filter assembly for a respirator and method of maki

1984-04-30

1985-09-24

Spitzer, Robert

Gas separation

With separating media bypass or system gas pressure relief

Valved bypass means

29422, 29511, 55387, 55420, 55502, 55509, 55518, 55DIG33, 12820527, 12820615, B01D 5304

Patent

active

045431124

ABSTRACT:
A sorbent type filter assembly (10) which is made by sequentially placing a first resilient perforated plate (40), a first retention filter (36), a sorbent bed (34), a second retention filter (38), a second resilient perforated plate (42), and a cover (14) within the cylindrical portion (16) of a canister shell (12). The cover (14) is forced downwardly to compress the sorbent bed (34) and to resiliently spring bias or stress the first resilient perforated plate (40). While the parts are held together under compression, an annular edge portion of the cylindrical shell is rolled into a circumferentially extending groove on the canister cover to hermetically and mechanically hold the parts together in their assembled and compressed relationship.

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