Foldable filter frame

Gas separation – With means securing or retaining separating media – Unit or cohesive sheet-like media in flow line or frame

Reexamination Certificate

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Details

C055S497000, C055S501000, C055S511000, C055SDIG007, C055SDIG031

Reexamination Certificate

active

07118610

ABSTRACT:
A foldable filter frame is provided. The filter frame includes a filter media panel and a rectangular support frame surrounding the filter media panel. The support frame included four edge elements. Each edge element has a double-walled construction and is foldable into a position in which a first leg of the respective edge element is generally perpendicular to a second leg of the edge element. An end of at least one of the edge elements that defines a corner of the support frame supports a foldable tab that is receivable in a complementary slot in an end of the other edge element defining the respective corner of the support frame with the tab being arranged in an inner space between the double-walls of the edge element.

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