Compact air filter

Details Compact air filter Compact air filter

1974-06-06

1976-07-20

Lutter, Frank W.

Gas separation

With means securing or retaining separating media

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

55486, 55529, 55DIG31, B01D 4610

Patent

active

039704408

ABSTRACT:
A compact nestable air filter of generally rectangular form comprising a frame formed of an integral suitable cut and scored blank of paperboard, which, when assembled, comprises planar frame members engaging a substantially sheet-form filter element therebetween, and having flared frame members disposed at an angle of less than 180.degree. permitting a plurality of frames to nest within each other, thereby reducing the bulk of the plurality of filters. The portions of the flared frame members may be connected together by several means, including glue flaps hingedly connected to one frame member and adhesively affixed to an adjacent member. In an improved embodiment a portion of the planar frame members on the bottom or downstream side of the filter is provided with an integral perforated cover sheet for retaining the filter element in place when subjected to an air current.

REFERENCES:
patent: 2178614 (1939-11-01), Slayter
patent: 2664172 (1953-12-01), Butterfield
patent: 2965197 (1960-12-01), Dow et al.
patent: 3023839 (1962-03-01), Best
patent: 3182433 (1965-05-01), Beckman
patent: 3429434 (1969-02-01), Hickin
patent: 3830045 (1974-08-01), Copenhefer

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