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Priority to DD16124172ApriorityCriticalpatent/DD99743A1/xx
Publication of DD99743A1publicationCriticalpatent/DD99743A1/xx
B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
B08B15/002—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using a central suction system, e.g. for collecting exhaust gases in workshops
B08B15/005—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using a central suction system, e.g. for collecting exhaust gases in workshops comprising a stationary main duct with one or more branch units, the branch units being freely movable along a sealed longitudinal slit in the main duct