Air filter assembly

Details Air filter assembly Air filter assembly

1998-07-13

2000-03-07

Simmons, David A.

Gas separation

With means securing or retaining separating media

Grid or tray type for bottom support only

55495, 55501, 55511, 55DIG5, 55DIG31, B01D 4610

Patent

active

060334541

ABSTRACT:
An air filter has a generally rectangular frame having surfaces defining generally a plane, and a pair of parallel side rails and a pair of parallel end rails along outer edges of the plane-defining surfaces, the rails flaring outboardly at an obtuse angle from the plane when the frame is unconfined, one of the rails at each corner of the rectangular frame being provided with tabs, and the other, contiguous of the rails at the corner having an open end into which the tab extends. The tabs have an angled outer surface and are of a length compared with the height of the open end to be held against movement clear of the open end in every position of the rails when the frame is assembled, to limit the outward flare of the rails and to ensure that the corners of the rails are substantially closed in every position of the rails.

REFERENCES:
patent: 3023839 (1962-03-01), Best
patent: 3862903 (1975-01-01), Getzin
patent: 3938973 (1976-02-01), Kershaw
patent: 3970440 (1976-07-01), Copenhafer et al.
patent: 4086071 (1978-04-01), Champlin
patent: 4105423 (1978-08-01), Latakas et al.
patent: 4210067 (1980-07-01), Evans
patent: 4277267 (1981-07-01), Posner
patent: 4372763 (1983-02-01), Champlin et al.
patent: 4420315 (1983-12-01), Kershaw
patent: 4464187 (1984-08-01), Kershaw
patent: 4629482 (1986-12-01), Davis
patent: 5810898 (1998-09-01), Miller

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