Gas separation – With separating media bypass or system gas pressure relief – Valved bypass means
Patent
1980-09-08
1982-03-30
Nozick, Bernard
Gas separation
With separating media bypass or system gas pressure relief
Valved bypass means
55387, 55498, 55502, 55510, 55DIG5, 55DIG35, 29455R, 29526R, 291635F, B01D 5000
Patent
active
043222307
ABSTRACT:
A filter assembly (10) for the filtration of toxic gases from the air is disclosed, which includes a unitized cylindrical housing having oppositely disposed end covers (11, 12), with an inlet port (11a) in one end cover and an outlet port (13a) in the side wall. An annular, pleated filter element (21) extends between the end covers (11, 12) between perforated liners (18, 19), and a third, perforated liner (20) is spaced outwardly from the center or common liner (19) to provide an annular space therebetween which is filled with activated charcoal (27). Fines media (25, 26) are positioned on opposite sides of the activated charcoal (27). The first, pleated filter (21) and the second, charcoal filter (27) are thus mounted contiguous to one another on opposite sides of separating wall (19, 25), and extend between the end covers (11, 12) to provide filtration for air being drawn through the filter unit.
REFERENCES:
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patent: 2979159 (1961-04-01), Pritchard et al.
patent: 3399516 (1968-09-01), Hough, Jr. et al.
patent: 3456635 (1969-07-01), Hervert
patent: 3727597 (1973-04-01), Hensler
patent: 3747303 (1973-07-01), Jordan
patent: 3880627 (1975-04-01), Morton
patent: 4036616 (1977-07-01), Byrns
patent: 4139354 (1979-02-01), Giles
patent: 4148120 (1979-04-01), Siebels
patent: 4227904 (1980-10-01), Kasmark, Jr. et al.
Klug Jerry J.
Schoen Donald W.
Donaldson & Company, Inc.
Nozick Bernard
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