Forced air wall heater

Claim 1

A FORCED AIR WALL FURNACE COMPRISING A METAL ENCLOSURE PROVIDING A PAIR OF SIDE WALLS SPACED TO FIT BETWEEN STANDARD WALL STUDS AND FRONT AND BACK WALLS MORE CLOSELY SPACED THAN THE SIDE WALLS, THE ENCLOSURE HAVING UPPER AND LOWER FRONT OPENINGS, A HEAT EXCHANGER MOUNTED VERTICALLY WITHIN THE ENCLOSURE, A FLUE DUCT EXTENDING FROM THE HEAT EXCHANGER WITHIN THE ENCLOSURE THROUGH THE TOP OF THE ENCLOSURE, AND FAN MEANS FOR DRAWING AIR IN THROUGH THE UPPER FRONT OPENING OF THE ENCLOSURE, MOVING THE AIR DOWNWARDLY OVER THE HEAT EXCHANGER AND DISCHARGING THE AIR AT THE LOWER FRONT OF THE ENCLOSURE, SAID FAN MEANS INCLUDING AN ELECTRIC MOTOR, MOUNTING BRACKETS SECURED TO THE BACK WALL ON EITHER SIDE OF THE FLUE, A RADIATION SHIELD SUPPORTED BY THE BRACKETS AND EXTENDING IN FRONT OF THE FLUE, THE MOTOR BEING SECURED TO THE RADIATION SHIELD IN FRONT OF THE FLUE WITH THE ROTARY AXIS OF THE MOTOR EXTENDING NORMAL TO THE BACK WALL OF THE ENCLOSURE, AND A CENTRIFUGAL FAN ELEMENT INCLUDING A DISC MOUNTED ON THE MOTOR SHAFT, AND A PLURALITY OF CURVED BLADES MOUNTED ON THE DISC FOR DRIVING AIR REARWARDLY AND OUTWARDLY AS THE FAN ELEMENT IS ROTATED, THE EDGE OF THE UPPER FRONT OPENING BEING CURVED INWARDLY TO DIRECT AIR TO THE CENTER OF THE FAN ELEMENT.