Gas separation – With means securing or retaining separating media – Unit or cohesive sheet-like media in flow line or frame
Patent
1981-03-30
1983-02-08
Lacey, David L.
Gas separation
With means securing or retaining separating media
Unit or cohesive sheet-like media in flow line or frame
55511, 55DIG31, B01D 4610
Patent
active
043727638
ABSTRACT:
An air filter assembly is provided which comprises a compressible air pervious multi-sided filter panel and a frame therefor, the latter being adjustable from a collapsed first mode to an operative second mode. The frame of foldable sheet material includes a foraminous center section in supporting engagement with the filter panel; a marginal section delimiting the center section; and a plurality of elongated peripheral sections arranged in alternate pairs and foldably connected to an coacting with the marginal section and with each other to form a hollow verge encompassing the filter panel periphery when the frame is in the second mode. The peripheral sections form a substantially flat multiply flange overlapping and compressing the filter panel periphery when the frame is in the first mode. A first pair of alternate peripheral sections have the opposite end portions thereof overlying corresponding end portions of a second pair of alternate peripheral sections when the frame is in the first mode. When the frame is adjusted from the first mode to the second mode, the overlapped end portions of the second pair of alternate peripheral sections will abuttingly engage at an angle the corresponding end portions of the first pair of alternate peripheral sections and restrain movement of the frame from the second mode to the first mode.
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patent: 4086071 (1978-04-01), Champlin
Champlin Charles L.
Misura John T.
Reiser Carl J.
Lacey David L.
Packaging Corporation of America
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