Patent ID: 7566354

Claim:
A filter assembly attachable to the peripheral flange of a discharge opening of a contaminated air source comprising: a) a filter having an inner surface, an outer surface, and an outer periphery; b) a flexible conduit having a continuous side wall, an outer end attachable to said discharge opening and an inner end attachable about the periphery of said filter, whereby air flowing through said conduit passes through said filter; c) an enclosure with an inlet opening and a discharge outlet, said conduit extending through said inlet opening and said filter being located within said enclosure between said enclosure inlet opening and said discharge outlet, whereby contaminated air is conveyed through said filter and out of said discharge outlet; d) a flexible tubular side protrusion extending from said conduit sidewall, said protrusion having an inner end in communication with the interior of said conduit between said conduit outer end and said enclosure and a closed outer end; and e) first and second clamps compressible around said conduit sidewall to secure said conduit to said flange.