Patent ID: 6083100
Filing Date: 2000-07-04
Classification: F24F

Abstract:
An air diffuser assembly for use in combination with an underfloor air distribution system, where said system includes in part a cavity under a floor, having an upper surface, for transmitting air under pressure to selected locations above said floor, said air diffuser assembly comprising:a.) first and second annular rings threadably engaging one another and secured respectively to above and below said floor, where said first annular ring includes an annular shoulder;b.) a grill assembly seated on said shoulder in communication with the space above said upper surface, where said grill assembly includes a centrally disposed downwardly extending vertically adjustable rod mounting a circular basket at its free end, wherein external means are provided to raise and lower said circular basket to precisely control airflow from said air diffuser assembly;i.) said circular basket including an array of through holes for delivering pressurized air from said cavity to said diffuser assembly; andii.) means connecting said basket to said grill assembly to prevent rotation of said basket; andc.) plural, radially extending vanes secured about said vertically adjustable rod to direct air under pressure from said basket to the space above said upper surface to impart a radial spin to said discharged air.