Suction hood for injurious gases

Details Suction hood for injurious gases Suction hood for injurious gases

1991-01-30

1992-07-28

Joyce, Harold

Ventilation

Workstation ventilator

Covered workbench chamber

454 65, B08B 1502

Patent

active

051336910

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.

REFERENCES:
patent: 380500 (1888-04-01), Linscott
patent: 398968 (1889-03-01), Jones et al.
patent: 404194 (1889-05-01), Holm
patent: 2905073 (1959-09-01), Aveni
patent: 3082680 (1963-03-01), Nevin et al.
patent: 3520115 (1970-07-01), Bowen

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