Air pollution control device

Claim 2

An air pollution control device as claimed in claim 1, wherein chemical filter means contains an aromatic compound and is adapted to scent the purified air.

Claim 3

An air pollution control device including means for both mechanical and chemical filtering of exhaust gases discharged from an open ended exhaust conduit prior to venting into the atmosphere, comprising a housing having means defining an inlet opening, and an exhaust opening, fastening means for securing the housing to the conduit with the inlet opening positioned over the open end of the conduit, means within the housing for creating a gas flow through the housing and out the exhaust opening, mechanical filter means mounted within the housing across the path of the gases for removing and entrapping particulates in the gases, and pollutant chemically-reactive filter means mounted within the housing adjacent the exhaust opening for neutralizing noxious substances within the gases, said mechanical and chemical filter means being accessible to permit removal thereof from within the housing when contaminated by pollutants, the mechanical filter means being comprised of support frame, a plurality of baffle members attached to said frame in a spaced relationship from each other, and from the housing, the mechanical filter means further including a porous material filter enveloping the support frame and surrounding the baffle members, said material being pervious to air but substantially impervious to particulates contained within the gases said baffle members being positioned for channelling portions of the gases to the mechanical filter means and for collecting polLutant particulates filtered out by the porous material filter.

Claim 4

An air pollution control device as claimed in claim 4, wherein the baffle members are frusto-conical in shape and are spaced in a stacked configuration to form pockets for preventing the entrapped particulates from falling into the open end of the exhaust conduit.