Patent ID: 7407621

Claim:
A track-based mobile system for use with processes generating air-borne pollutants, for preventing contamination of the atmosphere, comprising a track connecting a plurality of freely accessible spaced-apart work sites, for placement of workpieces, upon which processes generating air-borne pollutants are carried out; an enclosure providing an enclosed space for any one of the work sites and associated workpieces, to contain air-borne pollutants, generated from processing the associated workpieces, within the enclosed space; a filtering means, communicating with the enclosed space, for removing the air-borne pollutants from the enclosed space; wherein the enclosure and the filtering means are moveable along the track as a single unit, said single unit being supported entirely by the track, and the enclosure is readily openable at opposing portions facing the track, to enable the enclosure to pass over workpieces at the plurality of work sites.