Air filtering unit

Details Air filtering unit Air filtering unit

1975-07-21

1976-12-28

Lutter, Frank W.

Gas separation

With inflow gas control or distribution

With heating or cooling means or having insulation

55496, 55502, 55504, 55508, 55DIG31, B01D 5100

Patent

active

039999696

ABSTRACT:
An air filter unit to be installed in the wall of an air conveying conduit for filtering air as it passes between the conduit and a room includes a frame to mount a flow-through filter over an appropriate aperture in the conduit wall, a gasket between the filter and frame, a gasket between the frame and interior surface of the conduit wall, a frame collar disposed around the periphery of the frame, a clamp which causes the frame and collar to coact in a vice-like manner forcing the frame against the interior wall surface of the duct compressing the gasket therebetween, and a clamp for holding the filter in the frame. The filter unit may further include a pivotally mounted extractor plate disposed inside the conduit to selectively direct a predetermined amount of air through the filter.

REFERENCES:
patent: 1801949 (1931-04-01), Broudy et al.
patent: 1952989 (1934-03-01), Joseph
patent: 2175903 (1939-10-01), Lichtman
patent: 2184095 (1939-12-01), Daly et al.
patent: 2203311 (1940-06-01), Sinclair
patent: 3460322 (1969-08-01), Rivers et al.
patent: 3740934 (1973-06-01), Shuler

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