Gas separation – Two or more separators – With framework for edge to edge relation
Patent
1993-03-01
1994-08-30
Hart, Charles
Gas separation
Two or more separators
With framework for edge to edge relation
55485, 55492, 55493, 55495, 55511, 55528, 55DIG31, B01D 4602
Patent
active
053424239
ABSTRACT:
An air filter apparatus for an HVAC system having a frame with a channel area formed therein and having legs extending into the channel area, and a filter material having a portion received within the channel area. The filter material extends across the frame. The legs of the frame extend so as to exert a compressive force on the edges of the filter material received therebetween. The filter material has a first flexible mesh layer, a fibrous layer, and a second flexible mesh layer formed in a sandwiched configuration. The frame has a T-shaped slot extending longitudinally along an outer surface of the frame. The frame also has a notch formed along a corner of the frame and extends around the frame. A bead of an elastomeric material is received within this notch so as to extend outwardly of the frame.
REFERENCES:
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patent: 3280538 (1966-10-01), Schwarz
patent: 3373546 (1968-03-01), Setnan
patent: 4786295 (1988-11-01), Newman et al.
patent: 4855047 (1989-08-01), Firth
patent: 5037455 (1991-08-01), Scheineson et al.
patent: 5059218 (1991-10-01), Pick
patent: 5182542 (1993-01-01), Adelman et al.
patent: 5196040 (1993-03-01), Malloy et al.
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