Air conditioning unit

Claim 1

IN A ROOM AIR CONDITIONER, THE COMBINATION OF A CASING HAVING A FIRST INLET, A SECOND INLET AND AN OUTLET, A FAN IN SAID CASING, CONDITIONING MEANS IN SAID CASING FOR AIR PASSING THROUGH THE CASING, SAID FAN-INDUCING AIR INTO THE CASING THROUGH SAID INLETS AND DIRECTING AT LEAST A PORTION OF THE INDUCED AIR THROUGH THE CONDITIONING MEANS FOR DISCHARGE THROUGH THE OUTLET, A FIRST DAMPER PIVOTALLY MOUNTED ADJACENT ITS LOWER EDGE PLACED ADJACENT THE FIRST INLET, A SECOND DAMPER PIVOTALLY MOUNTED ADJACENT ITS LOWER EDGE PLACED ADJACENT THE SECOND INLET, EACH DAMPER HAVING A BRACKET CONTAINING A SLOT THEREIN, THE SLOT INCLUDING AN OFFSET PORTION, A ROTATABLE CONTROL ARM PIVOTALLY MOUNTED IN SAID CASING, PINS CARRIED ON SAID CONTROL ARM ADJACENT ITS OPPOSITE ENDS, THE PINS BEING SLIDABLY RECEIVED IN THE BRACKET SLOTS, AND MEANS FOR ROTATING SAID CONTROL ARM TO SLIDE PINS IN SAID SLOTS IN OPPOSITE DIRECTIONS THEREBY MOVING SAID DAMPERS INVERSELY, MOVEMENT OF ONE PIN TO A POSITION ENGAGING THE OFFSET PORTION OF ITS CO-OPERATING SLOT LOCKING THE CORRESPONDING DAMPER IN FULLY CLOSED POSITION WHILE MOVEMENT OF A SECOND PIN IN THE OPPOSITE DIRECTION IN THE CO-OPERATING SLOT OF THE CORRESPONDING DAMPER MOVING THE CORRESPONDING DAMPER TO A FULLY OPEN POSITION.