Air handling apparatus

Claim 1

AIR HANDLING APPARATUS, COMPRISING: MEANS FORMING A PLENUM CHAMBER HAVING OPPOSITELY LOCATED DUAL ADIT AND DUAL ADIT AND DUAL EXIT APERTURES COLLATERAL INLET AND COLLATERAL EXHAUST CONDUITS ASSOCIATED RESPECTIVELY WITH SAID DUAL ADIT AND DUAL EXIT APERTURES EXTERNAL OF SAID CHAMBER; A PAIR OF THE DEFLECTOR BLADES PIVOTALLY MOUNTED WITHIN SAID PLENUM CHAMBER IN OPPOSITION TO EACH OTHER, THE PIVOTAL MOPUNT OF ONE SAID DEFLECTOR BLADE BEING LOCATED BETWEEN THE DUAL ADIT APERTURES AND THE OTHER SAID DEFLECTOR BLADE HAVING ITS PIVOTAL MOUNT LOCATED BETWEEN SAID DUAL EXIT APERTURES; MEANS FOR SYNCHRONOUSLY MOVING SAID DEFLECTOR BLADES IN LIKE DIRECTIONS; A PAIR OF CONCAVE WALLS WITHIN SAID PLENUM CHAMBER TO DEFINE DEFLECTOR CHAMBERS, EACH WALL SYMMETRICALLY FACING ONE OF SAID DEFLECTOR BLADES AND LOCATED CLOSELY ADJACENT THE PATH OF THAT PORTION OF SUCH DEFLECTOR BLADE REMOTE FROM ITS PIVOTAL MOUNT, SAID CONCAVE WALLS BEING SPACED APART AT THEIR BACK SIDES TO DEFINE A FAN CHAMBER; AND WALL MEANS IN THE FAN CHAMBER FORMING OPEN-ENDED AIR PASSAGES BETWEEN THE DEFLECTOR CHAMBERS AND INCLUDING A FAN IN EACH PASSAGE TO INDUCE AIR MOVEMENT THROUGH SAID PASSAGES BETWEEN SAID DEFLECTOR CHAMBERS AND THE OPPOSED DUAL ADIT AND DUAL EXIT APERTURES.