Gas separation – With separating media bypass or system gas pressure relief – Valved bypass means
Patent
1983-02-15
1985-04-30
Hart, Charles
Gas separation
With separating media bypass or system gas pressure relief
Valved bypass means
55385A, 55387, B01D 5000
Patent
active
045141975
ABSTRACT:
A filter for air circulators including a layer of activated charcoal or similar carbon material received between a substantially planar screen of mesh material and a corrugated screen of mesh material forming the charcoal or carbon into a plurality of areas having triangular configuration with the areas being the same size and shape. This configuration of the carbon in the filter is obtained by attaching the periphery and alternate crests of the corrugated screen together into a single unitary construction. The filter also includes a frame having an inwardly extending flange on the air inlet surface of the filter with the flange being spaced from the crests of the corrugated screen remote from the planar screen to receive and mount a flexible first stage filter or prefilter of cellular material such as flexible foam rubber, foam plastic or the like so that the foam prefilter will be positioned against the crests of the corrugated screen to remove particulate material such as dust, lint, pollen or the like from the incoming air with the periphery of the foam material underlying the flange to enable it to be easily removed for cleaning by holding under running water, immersing in water or the like and installing it by reinserting the peripheral edge of the foam prefilter under the peripheral flange on the frame of the filter.
REFERENCES:
patent: 1802941 (1931-04-01), Drager
patent: 2764258 (1956-09-01), Bub et al.
patent: 2886124 (1959-05-01), Scharmer
patent: 3436352 (1959-04-01), Revoir et al.
patent: 3654747 (1972-04-01), Remick
patent: 3712030 (1923-01-01), Priest
patent: 4365981 (1982-12-01), McDonough
patent: 4370155 (1983-01-01), Armbruster
patent: 4374655 (1983-02-01), Grodzka et al.
Hart Charles
Jacobson Harvey B.
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