Patent
1981-04-16
1983-06-28
Tapolcai, William E.
F23J 1500
Patent
active
043899234
ABSTRACT:
Apparatus for removing pollutants, particularly automotive exhaust gases, from work areas or the like is formed with an elongate stationary duct for exhausting pollutants therethrough and with a bearing bracket longitudinally movable along the stationary duct for connecting an exhaust hose to the duct adapted to receive pollutants. By movement of the bearing bracket along the duct, the exhaust hose may be moved to any one of a number of desired locations. The stationary duct is formed with displaceable sealing elements which are moved by the bearing bracket between a sealing position and a position allowing the hose to be placed in flow communication with the stationary duct as the bearing bracket is moved along the duct. Alternatively, the exhaust hose may be connected with a second elongate duct which is itself movably connected with the stationary duct through displaceable sealing elements.
REFERENCES:
patent: 3478668 (1969-11-01), Scheel
patent: 3481265 (1969-12-01), Scheel
patent: 3705545 (1972-12-01), Overmyer et al.
patent: 3913470 (1975-10-01), Cullen
patent: 3955984 (1976-05-01), Hirahama et al.
patent: 4086847 (1978-05-01), Overmyer
patent: 4173176 (1979-11-01), Svensson
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