Ventilating installation for vehicles

Claim 1

A VENTILATING AND HEATING INSTALLATION FOR VEHICLES, ESPECIALLY MOTOR VEHICLES PROVIDED WITH ENGINE SPACE MEANS, PASSENGER SPACE MEANS SEPARATED FROM SAID ENGINE SPACE MEANS AND WINDOWPANE MEANS, COMPRISING DEFROSTER NOZZLE MEANS LOCATED ADJACENT THE INTERIOR SURFACE OF SAID WINDOWPANE MEANS, COWL MEANS ADJACENT THE EXTERIOR SURFACE OF SAID WINDSHIELD MEANS ON SAID VEHICLE, AND MEANS OPERATIVELY CONNECTING SAID COWL MEANS WITH SAID DEFROSTER NOZZLE MEANS INCLUDING A CONDUIT SYSTEM PROVIDED WITH A FRESH AIR CONDUIT CONNECTED AT ONE END TO SAID COWL MEANS, BLOWER MEANS WITHIN SAID CONDUIT SYSTEM PROVIDED WITH A OTHER END OF SAID CONDUIT FOR DRAWING AIR FROM OUTSIDE SAID VEHICLE THROUGH SAID COWL MEANS, HEAT-EXCHANGER MEANS WITHIN SAID CONDUIT SYSTEM, DISTRIBUTOR VALVE MEANS FOR SELECTIVELY VALVING THE AIR FLOW TO SAID DEFROSTER NOZZLE MEANS AND TO THE FLOOR SPACE OF SAID PASSENGER SPACE MEANS, SAID CONDUIT CONTAINING AN APERTURE PROVIDING A COMMUNICATION BETWEEN AIR FROM SAID ENGINE SPACE MEANS MEANS TO SUPPLY HEATED AIR FROM SAID ENGINE SPACE MEANS TO SAID CONDUIT SYSTEM, FIRST VALVE MEANS OPERATIVE TO SELECTIVELY OPEN AND CLOSE SAID APERTURE, SECOND VALVE MEANS FOR SELECTIVELY CLOSING AND OPENING SAID CONDUIT, AND THE CONTROL MEANS OPERATIVELY CONNECTED WITH SAID FIRST VALVE MEANS AND WITH AT LEAST ONE OF SAID DISTRIBUTOR VALVE AND SECOND VALVE MEANS FOR SELECTIVELY ADJUSTING THE SAME IN UNISON DURING OPENING OF SAID APERTURE TO CONDUCT AT LEAST NEARLY ALL OF THE AIR TO SAID DEFROSTER NOZZLE MEANS.