Automobile-windshield defroster

Claim 1

AN AUTOMOBILE DEFROSTER, COMPRISING, IN COMBINATION WITH AN AUTOMOBILE WINDSHIELD, A HOUSING, A CROSS FLOW FAN ROTOR JOURNALED IN SAID HOUSING FOR ROTATION ABOUT AN AXIS EXTENDING SUBSTANTIALLY PARALLEL TO SAID WINDSHIELD, SAID HOUSING FORMING AIR-INLET MEANS FOR INTRODUCING AIR INTO SAID HOUSING GENERALLY TRANSVERSELY TO SAID AXIS AND AIR-OUTLET MEANS ANGULARLY OFFSET FROM SAID AIR-INLET MEANS WHILE EXTENDING GENERALLY TANGENTIALLY TO SAID ROTOR AND FORMING AN ELONGATED NOZZLE EXTENDING ALONG AN EDGE OF SAID WINDSHIELD IN GENERALLY AXIAL DIRECTION, AND AN ELECTRIC MOTOR CONNECTED TO SAID ROTOR FOR DRIVING SAME, SAID ROTOR HAVING A PLURALITY OF ANGULARLY SPACED BLADES EXTENDING IN THE DIRECTION OF SAID AXIS WITH INNER EDGES LYING SUBSTANTIALLY ALONG A FIRST CYLINDRICAL SURFACE CENTERED ON SAID AXIS AND OUTER EDGES LYING SUBSTANTIALLY ALONG A SECOND CYLINDRICAL SURFACE OF A RADIUS GREATER THAN THAT OF SAID FIRST CYLINDRICAL SURFACE AND COAXIAL THEREWITH WHEREBY AIR DRAWN INTO SAID HOUSING THROUGH SAID INLET MEANS PASSES THROUGH SAID ROTOR AND IS EJECTED TANGENTIALLY THROUGH SAID OUTLET MEANS, SAID INLET AND OUTLET MEANS CONSTITUTING OPENINGS IN SAID HOUSING EXTENDING SUBSTANTIALLY OVER THE ENTIRE LENGTH OF SAID BLADES.