Suction hood for injurious gases
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United States of America Patent
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-
Jul 28, 1992
Grant Date -
N/A
app pub date -
Jan 30, 1991
filing date -
Jan 31, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A said suction hood (1) being connected to a gas extraction system (7) and preferably suspended on a movable arm system (4) permitting the suction hood (1) to be set in various positions relative to an area (2) from which the injurious gases (G) are extracted. For substantially increasing the depth of the suction hood when required, the suction hood (1) includes at least one and preferably three movably mounted wall elements (15, 16, 17) which is or are settable in a folded position or folded positions and which is or are unfoldable into a position or positions wherein it or they gives or give the suction hood (1) a fume cupboard like shape and function.
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