Diffuser

Claim 1

AN ADJUSTABLE AIR DIFFUSING DEVICE FOR AN OUTLET MEMBER COMMUNICATING WITH AN AIR DUCT, SAID OUTLET MEMBER HAVING OUTWARDLY AND FORWARDLY SLOPING WALLS BETWEEN WHICH THE AIR FROM THE AIR DUCT FORWARDLY FLOWS, COMPRISING THE COMBINATION OF, A PLATE DISPOSED BETWEEN SAID SLOPING WALLS TO BAFFLE THE AIR FLOW AND CAUSE THE AIR TO FLOW BETWEEN THE PERIPHERAL EDGES OF THE PLATE AND SAID SLOPING WALLS, FIRST MEANS FOR SUPPORTING SAID PLATE BETWEEN SAID SLOPING WALLS, SECOND MEANS FOR ADJUSTABLY VARYING THE POSITION OF THE PLATE CARRIED BY THE SUPPORT MEANS ALONG THE AXIS OF THE OUTLET MEMBER FOR CHANGING THE SPACING OF THE PLATE FROM SAID SLOPING WALLS IN ACCORDANCE WITH THE POSITION OF THE PLATE ALONG SAID AXIS, THIRD MEANS FOR ADJUSTABLY VARYING THE ANGLE OF THE PLATE RELATIVE TO SAID AXIS FOR VARYING THE RELATIVE SPACING OF THE PERIPHERAL EDGES OF THE PLATE ON OPPOSITE SIDES OF SAID AXIS FROM SAID SLOPING WALLS IN ACCORDANCE WITH SAID ANGLE, AND FOURTH MEANS FOR RESILIENTLY LOCKING THE PLATE IN ADJUSTED POSITION ALONG SAID AXIS AND AT AN ADJUSTED ANGLE TO SAID AXIS, SAID FOURTH MEANS RESILIENTLY YIELDING TO MANUAL FORCE MOVING THE PLATE ALONG SAID AXIS AND SIMULTANEOUSLY TO MANUAL FORCE MOVING THE PLATE TO VARYING ANGLES TO SAID AXIS.