Air filter and method of making same

Details Air filter and method of making same Air filter and method of making same

1975-04-24

1976-11-16

Lutter, Frank W.

Gas separation

With means securing or retaining separating media

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

55524, 55DIG5, 55DIG31, 156216, 156226, 156227, B01D 4610

Patent

active

039921735

ABSTRACT:
An air filter of the type having a porous filter medium body layer supported in a complementary unitary frame has a perforated panel supportingly engaging one face of the layer with folded up narrow panels along the edges of the layer, narrow retainer panels overlying the margins of the opposite face of the layer from the perforated panel, and each of the retainer panels being provided with spaced extensions which overlap adjacent the corners of the layer and are secured together as by means of adhesive, there also being anchoring adhesive securing two of the retainer panels to the filter layer. The overlapping extensions are perforated.
An efficient method of making the air filter is provided.

REFERENCES:
patent: 2138874 (1938-12-01), Myers
patent: 2687781 (1954-08-01), Sens
patent: 2715453 (1955-08-01), Lange
patent: 2877863 (1959-03-01), Lorie
patent: 3306328 (1967-02-01), Markus
patent: 3429434 (1969-02-01), Hickin

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