Ceiling air terminal

Claim 1

An air terminal provided for supplying treated air from a central source thereof to an enclosure comprising: a. means defining a primary chamber adapted for connection to the source of treated air; b. means defining an air distribution chamber associated with said primary chamber; c. a distribution plate disposed between said primary chamber and said distribution chamber, said plate having a plurality of openings formed therein for passage of treated air from said primary chamber into said air distribution chamber; d. selectively inflatable means for regulating the quantity of air discharged from said distribution chamber; e. a cut-off plate disposed opposite said inflatable means for cooperation therewith, said plate having a first curved portion defining the extremity of the plate closest to said inflatable means, and a planar portion immediately adjacent said curved portion, said planar portion being at an angle of substantially 5* relative to a vertical tangent line to said curved portion; said planar portion being inclined away from said inflatable means, inflation of said inflatable means reducing the area between said curved portion and said inflatable means; and f. diffuser means associated with the terminal to provide a substantially horizontal discharge from said terminal into said enclosure.