Air filter

Details Air filter Air filter

1974-04-19

1976-02-17

Lutter, Frank W.

Gas separation

With means securing or retaining separating media

Unit or cohesive sheet-like media in flow line or frame

55511, 55DIG5, 55DIG31, B01D 4610

Patent

active

039389731

ABSTRACT:
An air filter panel comprising a filter element of fibrous material supported at its marginal edges by a stiff paper frame is provided. The strip of stiff paper is scored along two spaced longitudinal lines and folded away from the longitudinal lines to form a trough for receiving the filter element, the strip also being folded transversely to form a closed configuration surrounding the filter element to receive the marginal edges of the filter element in the trough. The frame is triangular in cross section with an outer wall, a flat rear wall extending inward from the outer wall toward the filter element, and an inclined front wall extending inward from the outer wall toward the filter element and sloping toward the rear wall. The front wall terminates in a flange disposed in a parallel relationship with the rear wall. The flange is secured to the rear wall with the filter element compressed therebetween to hold the frame and filter element together.

REFERENCES:
patent: 2965197 (1960-12-01), Dow et al.
patent: 3003581 (1961-10-01), Greason
patent: 3023839 (1962-03-01), Best
patent: 3107990 (1963-10-01), Getzin
patent: 3154393 (1964-10-01), Klein et al.
patent: 3388535 (1968-06-01), Nash
patent: 3447691 (1969-06-01), Andrews et al.

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