Heating system for tank transport of liquified materials

Claim 1

THE COMBINATION OF A TRANSPORTATION TANK AND A HEATING SYSTEM FOR CONVEYING HEAT SENSITIVE LIQUIDS AT TEMPERATURES ABOVE AMBIENT TEMPERATURES WHEREIN AN ENGINEDRIVEN DEVICE IS USED TO TRANSPORT SAID TANK, SAID ENGINE HAVING EXHAUST MEANS FOR EXHAUSTING HOT WASTE GASES, SAID HEATING SYSTEM COMPRISING A CONDENSER IN HEAT CONDUCTIVE RELATIONSHIP WITH AT LEAST THE UNDERSIDE OF SAID TANK, AN EVAPORATOR MOUNTED IN HEAT CONDUCTIVE RELATIONSHIP WITH AT LEAST A PORTION OF SAID ENGINE EXHAUST MEANS, A HEATTRANSFER CIRCULATING SYSTEM COUPLING SAID EVAPORATOR TO SAID CONDENSER, SAID COULPING SYSTEM COMPRISING AT LEAST ONE VAPOR TRANSFER LINE FROM SAID EVAPORATOR TO SAID CONDENSER AND AT LEAST ONE FLUID RETURN LINE FROM THE CONDENSER TO SAID EVAPORATOR, A PREDETERMINED AMOUNT OF VAPORIZABLE HEAT-TRANSFER FLUID HERMETICALLY SEALED IN SAID CIRCULATING SYSTEM, AND A THERMOSTATICALLY OPERABLE VALVE COUPLED TO SAID LIQUID RETURN LINE ADAPTED TO CONTROL THE FLOW OF FLUID FROM SAID CONDENSER TO SAID EVAPORATOR IN ACCORDANCE WITH THE TEMPERATURE REQUIREMENTS OF SAID TANK.