Filter

Details Filter Filter

1992-12-18

1993-08-03

Hart, Charles

Gas separation

Separating media adjustable to various positions of use or...

55493, 55516, 55519, 55528, B01D 4610

Patent

active

052324800

ABSTRACT:
A filter is disclosed including a four-sided frame having a central aperture therein. Four side walls are provided, with each side wall being pivotally mounted to one side of the frame, and movable between a use position wherein each side wall is substantially perpendicular to the frame, and a storage/shipping position wherein each side wall is substantially parallel to the frame. The filter further comprises a filter member attached to the frame and extending across the central aperture. In the storage/shipping position, the filters are substantially flattened and easily stacked, thereby allowing for efficient storage and ease of transport.

REFERENCES:
patent: 2965197 (1960-12-01), Dow et al.
patent: 3107991 (1963-10-01), Taussig
patent: 3333404 (1967-08-01), Klun
patent: 3407576 (1968-10-01), Staunton
patent: 3408438 (1968-10-01), Staunton
patent: 4086071 (1978-04-01), Champlin
patent: 4420315 (1983-12-01), Kershaw
patent: 4464187 (1984-08-01), Kershaw

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