Fan construction

Claim 1

IN A ROOM AIR CONDITIONER, THE COMBINATION COMPRISING A REFRIGERATION SYSTEM INCLUDING A COOLING UNIT ADAPTED TO CONDENSE WATER OUT OF AN AIR STREAM, MEANS FOR COLLECTING SAID WATER FROM SAID COOLING UNIT, A WATER DISPOSAL MEANS IN SAID UNIT INCLUDING A FAN AND MEANS FOR DIRECTING DROPLETS OF WATER FROM SAID WATER COLLECTING MEANS INTO SAID FAN THEREBY TO ATOMIZE SAID WATER DROPLETS DURING ROTATION OF SAID FAN, SAID FAN INCLUDING A HUB ADAPTED FOR CONNECTION TO A ROTATABLE SHAFT, SAID HUB HAVING AN ANNULAR SECTION PROVIDED WITH A PLURALITY OF SPACED APART GROOVES, SAID GROOVES HAVING AT LEAST ONE SLOT IN THE BOTTOM THEREOF EXTENDING THROUGH SAID ANNULAR SECTION, A PLURALITY OF FAN BLADES EACH HAVING A BASE PORTION ADAPTED TO FIT WITHIN A GROOVE OF SAID HUB, TAB MEMBERS EXTENDING FROM SAID BASE PORTION OF SAID FAN BLADES AND ADAPTED TO EXTEND THROUGH SAID SLOTS IN SAID BOTTOM OF SAID GROOVES, SAID TABS BEING TRANSVESELY BENT ON THE OPPOSITE SIDES OF SAID HUB TO RETAIN SAID BLADES AGAINST CENTRIFUGAL FORCE DURING ROTATION OF SAID FAN, AND A RESILIENT POLYMERIC ADHESIVE MATERIAL IN SAID GROOVES AND SURROUNDING SAID BASE SECTION OF SAID FAN BLADES FOR DEADENING SOUND VIBRATIONS IN SAID FAN BLADES CAUSED BY WATER DROPLETS IMPINGING AGAINST SAID FAN BLADES.