Gas separation – With separating media bypass or system gas pressure relief – Valved bypass means
Patent
1990-05-03
1992-03-10
Woo, Jay H.
Gas separation
With separating media bypass or system gas pressure relief
Valved bypass means
553851, 55473, 55494, 55495, 416146R, B01D 5000
Patent
active
050946765
ABSTRACT:
A filter and fan assembly utilizes a conventional ceiling fan having a motor and an upstanding tubular member above the motor which carries electrical wires to the motor. A collar concentrically positioned on the tubular member includes radially extending support members, each of which supports a radially extending horizontal arm. At the end of each such arm is attached, a vertically extending support member. A shallow cylindrical shroud is carried on the vertically extending support members, with the shroud extending a limited distance above the radially extending arms. A plurality of trays having porous bottoms are supported on the arms and contain a filter medium including a layer of activated charcoal granules covered by a membrane of polyester filaments. A second embodiment utilizes a split collar which is bolted around the upstanding tubular member. The fan is normally operated to pull air downwardly through the filter medium.
REFERENCES:
patent: 3082587 (1963-03-01), Brimberg
patent: 3422263 (1969-01-01), Asahina
patent: 3516232 (1970-06-01), Gilbertson
patent: 3608278 (1971-09-01), Greenspan
patent: 4385911 (1983-05-01), Popeil et al.
patent: 4411675 (1983-10-01), de Castella
patent: 4514197 (1985-04-01), Armbruster
patent: 4662912 (1987-05-01), Perkins
patent: 4750863 (1988-06-01), Scoggins
Bushey C. Scott
Woo Jay H.
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