High temperature heating apparatus

Claim 1

A CLOSED HEATING SYSTEM OF THE CIRCULATING HEAT TRANSFER LIQUID TYPE, COMPRISING: (A) A HEATING UNIT; (B) AT LEAST ONE HEAT USING UNIT; (C) A CLOSED CIRCULATING SYSTEM INCLUDING SUPPLY AND RETURN CONDUITS CONNECTING SAID HEATING UNIT TO EACH SAID HEAT USING UNIT; (D) AN ORGANIC LIQUID HAVING A BOILING POINT OF SEVERAL HUNDRED DEGREES FAHRENHEIT, WHICH DECOMPOSES AT TEMPERATURES NOT SUBSTANTIALLY IN EXCESS OF ITS BOILING POINT, IN SAID CLOSED CIRCULATING SYSTEM; AND (E) MEANS FOR CONTINUOUSLY MAINTAINING A MINIMUM RATE OF FLOW OF THE CIRCULATING ORGANIC HEAT TRANSFER LIQUID THROUGH THE HEATING UNIT TO PREVENT THE OVERHEATING AND CONSEQUENT DECOMPOSITION OF SAID LIQUID COMPRISING A BYPASS CONDUIT CONNECTED BETWEEN THE SUPPLY AND RETURN CONDUITS AHEAD OF THE HEAT USING UNIT OR UNITS AND CONTROL MEANS CONTINUOUSLY AND AUTOMATICALLY RESPONSIVE TO A DECREASING RATE OF FLOW OF THE CIRCULATING LIQUID MEDIUM THROUGH SAID CLOSED CIRCULATING SYSTEM TO DIVERT SUFFICIENT FLOWING MEDIUM FROM SAID SUPPLY CONDUIT THROUGH THE BYPASS CONDUIT INTO THE RETURN CONDUIT AND THROUGH SAID HEATING UNIT TO MAINTAIN SAID MINIMUM RATE OF FLOW THERETHROUGH.