Vehicle ventilation system

Claim 1

IN A VEHICLE BODY HAVING A FIXED WINDSHIELD AND A COWL STRUCTURE EXTENDING FORWARDLY THEREFROM, AN ELONGATED AIR INTAKE PLENUM CHAMBER EXTENDING ACROSS THE WIDTH OF SAID VEHICLE BODY BENEATH THE SURFACE OF SAID COWL STRUCTURE AND HAVING AT LEAST ONE DISCHARGE OUTLET, A BAFFLE SEPARATING SAID PLENUM CHAMBER INTO TWO LONGITUDINALLY EXTENDING SUBCHAMBERS, AN AIR INLET OPENING IN SAID COWL STRUCTURE LEADING TO SAID PLENUM CHAMBER, AND A GRILLE POSITIONED IN SAID OPENING HAVING (1) A FIRST SET OF DIRECTIONAL VANES CONSTRUCTED AND ARRANGED TO INTERCEPT A PORTION OF AN AIR STREAM FLOWING OVER SAID COWL STRUCTURE AND TO DIRECT SAID PORTION INTO ONE OF SAID SUBCHAMBERS, AND (2) A SECOND SET OF DIRECTIONAL VANES CONSTRUCTED AND ARRANGED TO INTERCEPT A FURTHER PORTION OF SAID AIR STREAM AFTER DEFLECTION OF THE LATTER BY SAID WINDSHIELD AND TO DIRECT SAID FUTHER PORTION INTO THE OTHER OF SAID SUBCHAMBERS, SAID BAFFLE PREVENTING A TURBULENCE CREATING INTERMIXTURE OF SAID AIR STREAM PORTIONS AS THEY FLOW TOWARD SAID PLENUM CHAMBER DISCHARGE OUTLET.