F - Mech Eng,Light,Heat,Weapons – 24 – F
Patent
F - Mech Eng,Light,Heat,Weapons
24
F
98/42
F24F 7/04 (2006.01) B08B 15/00 (2006.01)
Patent
CA 1080021
ABSTRACT A multi-position duct system includes a generally horizontally extending first duct section having one wall defined by a flexible web. The first duct section has first and second ends and is pivotally mounted adjacent its first end from a support member for movement in a horizontal arc thereabout. A car is mounted on the first duct section for movement longitudinally thereof. The car engages the flex- ible web to define within the car a chamber in open com- munication with the interior of the first duct section. A second telescoping duct section having vertically upper and lower ends is attached at its upper end to the car and moves therewith longitudinally of the first duct section. The second duct section also is in open communication with the chamber. A hood for collecting air containing pollutant fumes and particles is attached to the lower end of the second duct section. The first conduit is attached to a source of suction. The hood can be positioned at a selected vertical height a selected distance from the sup- port member to withdraw pollutant-laden air from a work area.
290572
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