Apparatus for controlled burning of liquefied petroleum gas

Claim 1

FOR USE WITH A BODY TO BE HEATED, APPARATUS FOR CONTROLLING THE SUPPLY OF L.P.G. FROM AN ENCLOSED TANK, HAVING L.P.G. IN A LIQUID STATE UNDER PRESSURE IN THE LOWER PORTION THEREOF AND L.P.G. UNDER PRESSURE IN A VAPOR STATE IN THE UPPER PORTION THEREOF, TO A BURNER SYSTEM HAVING A MASTER BURNER MEANS ADAPTED TO RECEIVE L.P.G. IN A LIQUID STATE AND A PILOT BURNER MEANS ADAPTED TO RECEIVE L.P.G. IN A VAPOR STATE, SAID APPARTUS COMPRISING THE COMBINATION OF: (A) FIRST CONDUIT MEANS COMMUNICATING DIRECTLY SOLELY THE LOWER PORTION OF SAID TANK WITH SAID MASTER BURNER ARRANGEMENT; (B) SECOND CONDUIT MEANS COMMUNICATING DIRECTLY SOLELY THE UPPER PORTION OF SAID TANK WITH SAID PILOT BURNER ARRANGEMENT; (C) VALVE MEANS CONNECTED IN SAID FIRST CONDUIT MEANS FOR OPENING AND CLOSING SAID FIRST CONDUIT MEANS AND THEREBY DISESTABLISHING COMMUNICATION BETWEEN SAID LOWER PORTION OF SAID TANK AND SAID MASTER BURNER ARRANGEMENT; (D) MEANS FOR SENSING A CHARACTERISTIC OF SAID BODY RELATED TO THE HEAT RRANFERRED THERETO BY SAID BURNER SYSTEM; (E) CONTROL MEANS FOR OPERATING SAID VALVE MEANS TO OPEN AND CLOSE SAID FIRST CONDUIT MEANS IN ACCORD-