Air distributing unit

Claim 1

IN AN AIR CONDITIONING SYSTEM FOR AN AREA TO BE TREATED A SOURCE OF CONDITIONED AIR, A CONDUIT CONNECTED TO SAID SOURCE OF CONDITIONED AIR, SAID CONDUIT HAVING A GENERAL RECTANGULAR CROSS-SECTION AND INCLUDING A FIRST WALL, A PLENUM CHAMBER LOCATED ADJACENT SAID CONDUIT, SAID FIRST WALL AT LEAST PARTIALLY DEFINING THE PLENUM CHAMBER, A PLURALITY OF OPENINGS EXTENDING THROUGH SAID WALL PLACING SAID CONDUIT AND PLENUM CHAMBER IN COMMUNICATION, SAID OPENINGS BEING LOCATED ADJACENT THE JUNCTURE OF THE FIRST WALL WITH AN ADJACENT WALL OF THE CONDUIT, MEANS ASSOCIATED WITH SAID OPENINGS AND EXTENDING INTO SAID PLENUM CHAMBER FOR DIFFUSING THE AIR PASSING INTO THE PLENUM CHAMBER, A SECOND WALL SPACED FROM AND PARALLEL TO SAID FIRST WALL AND ALSO PARTIALLY DEFINING SAID PLENUM CHAMBER, SAID SECOND WALL HAVING A LONGITUDINAL SLOT-LIKE OUTLET THEREIN, A THIRD WALL SPACED FROM SAID SECOND WALL AND BEING PARALLEL THEREWITH AND FORMING THEREWITH A SOUNDABSORBING CHAMBER, DAMPER MEANS EXTENDING FROM WITHIN THE PLENUM CHAMBER INTO THE AREA ADJACENT SAID SOUNDABSORBING CHAMBER, SAID LONGITUDINAL SLOT-LIKE OUTLET IN SAID SECOND WALL HAVING A LONGITUDINAL PERIPHERAL PORTION, SAID DAMPER MEANS COOPERATING WITH SAID LONGITUDINAL PERIPHERAL PORTION TO REGULATE THE PASSAGE OF AIR FROM THE PLENUM CHAMBER INTO THE AREA BEING TREATED.