Heat motor operated valves

Claim 1

IN A VALVE STRUCTURE FOR CONTROLLING A GASEOUS MEDIUM, HAVING A VALVE BODY WITH AN INLET PASSAGE AND AN OUTLET PASSAGE, A PARTITION DEFINING A VALVE SEAT BETWEEN THE PASSAGES A VALVE CLOSURE COOPERATING WITH THE SEAT, A DIAPHRAGM OR MOVABLE WALL UPON WHICH THE CLOSURE IS MOUNTED, A SPRING URGING THE DIAPHRAGM TO CLOSING POSITION, AND MEANS COOPERATING WITH THE DIAPHRAGM TO DEFINE A CHAMBER, THE COMBINATION THEREWITH OF AUXILIARY VALVE STRUCTURE OPTIONALLY CONDUCTING GAS AT INLET PRESSURE TO THE CHAMBER, OR VENTING THE CHAMBER, COMPRISING AN ELONGATED MEMBER CAPABLE OF HEAT EXPANSION; AN ELECTRIC HEATING ELEMENT IN HEAT CONDUCTION RELATION TO SAID MEMBER; A FIRST PORTION COMMUNICATING WITH THE INLET PASSAGE AND WITH THE CHAMBER; A FIRST AUXILIARY CLOSURE CONTROLLING SAID FIRST PORT AND IN NORMALLY OPEN POSITION WHEN THE MEMBER IS UNHEATED; FIRST RESILIENT MEANS URGING SAID FIRST AUXILIARY CLOSURE TOWARD OPEN POSITION AND INTO ABUTTING RELATION WITH ONE END OF SAID MEMBER; A VENT PORT COMMUNICATING WITH THE CHAMBER; A SECOND AUXILIARY CLOSURE CONTROLLING SAID VENT PORT AND IN NORMALLY CLOSED POSITION WHEN THE MEMBER IS UNHEATED SAID SECOND CLOSURE LOCATED ADJACENT THE OTHER END OF SAID ELONGATED MEMBER; AND SECOND RESILIENT MEANS URGING SAID SECOND AUXILIARY CLOSURE TOWARD CLOSED POSITIONS; AND INTO ABUTTING RELATION WITH THE OTHER END OF SAID MEMBER THE EXPANSION OF SAID MEMBER BY HEAT CONDUCTION FROM SAID ELECTRIC HEATING ELEMENT MOVING SAID FIRST AND SECOND AUXILIARY CLOSURES IN OPPOSITION TO THEIR RESPECTIVE FIRST AND SECOND RESILIENT MEANS TO CLOSE SAID FIRST PORT AND SAID VENT PORT.