Mixing valve with temperature responsive control

Claim 1

A MIXING VALVE FOR MIXING OF AT LEAST TWO FLUID MEDIUMS COMPRISING A HOLLOW VALVE BODY MEMBER, SAID VALVE BODY MEMBER INCLUDING AT LEAST A FIRST COMPARTMENT, AN INTERMEDIATE COMPARTMENT, AND A SECOND COMPARTMENT, SAID RESPECTIVE COMPARTMENTS BEING COAXIALLY ARRANGED WITH RESPECT TO ONE ANOTHER, FIRST AND SECOND INLET PORTS FOR SEPARATE FLUID MEDIUMS RESPECTIVELY COMMUNICATING WITH SAID FIRST AND SECOND COMPARTMENTS, SAID INTERMEDIATE COMPARTMENT HAVING A DELIVERY PORT FOR COMMINGLED FLUID LEADING DIRECTLY OUT THEREFROM THROUGH SAID VALVE BODY, VALVE MEANS FOR CONTROLLING THE FLOW OF SAID SEPARATE FLUID MEDIUMS FROM SAID FIRST AND SECOND COMPARTMENTS INTO SAID INTERMEDIATE COMPARTMENT, RESPECTIVELY, TEMPERATURE RESPONSIVE MEANS COACTING WITH SAID VALVE MEANS TO DISPLACE THE LATTER IN DEPENDENCE UPON THE TEMPERATURE OF SAID COMMINGLED FLUID MEDIUMS, SAID TEMPERATURE RESPONSIVE MEANS INCLUDING (A) A HOLLOW MEMBER LOCATED WITHIN SAID INTERMEDIATE COMPARTMENT AND BEING PARTIALLY FILLED WITH A VAPOROUS EXPANSION MEDIUM WHICH REMAINS IN WET VAPOR PHASE THROUGHOUT THE TEMPERATURE RANGE OF THE FLUID MEDIUMS, (B) A CHAMBER DEFINED IN SAID HOLLOW VALVE BODY AND HAVING EXPANSIBLE WALL MEANS OPERATIVELY CONNECTED TO SAID VALVE MEANS, AND (C) A LINE INTERCONNECTING SAID HOLLOW MEMBER AND SAID CHAMBER AND MEANS COOPERATING WITH SAID VALVE MEANS FOR BALANCING THE EFFECT OF THE PRESSURE OF SAID FLUID MEDIUMS ACTING UPON SAID VALVE MEANS.