Apparatus for transporting produce under controlled atmosphere

Claim 1

APPARATUS FOR CONTROLLING THE OXYGEN CONCENTRATION IN THE ATMOSPHERE IN A COMPARTMENT MEANS, COMPRISING: COMPARTMENT MEANS ADAPTED TO THE PASSAGE OF GASEOUS ATMOSPHERES THEREINTO AND THEREFROM, EQUIPMENT MEANS OPERABLE TO REFRIGERATE SAID COMPARTMENT MEANS, INERT GAS MATERIAL SOURCE STORAGE MEANS FOR STORING A SUPPLY OF INSERT GAS MATERIAL OTHER THAN OXIDES OF CARBON, TO PROVIDE A SOURCE OF INERT GAS MATERIAL OTHER THAN OXIDES OF CARBON, PASSAGE MEANS HAVING AN INLET MEANS COMMUNICATING WITH THE INTERIOR OF SAID SOURCES STORAGE MEANS AND AN OUTLET MEANS COMMUNICATING WITH THE INTERIOR OF SAID COMPARTMENT MEANS TO ALLOW PASSAGE OF SAID INERT GAS MATERIAL FROM THE INTERIOR OF SAID SOURCE STORAGE MEANS AND OUT OF SAID OUTLET MEANS INTO THE INTERIOR OF SAID COMPARTMENT MEANS TO BECOME PART OF SAID ATMOSPHERE IN SAID COMPARTMENT MEANS, VALVE MEANS IN SAID PASSAGE MEANS, OXYGEN SENSING MEANS IN SAID COMPARTMENT MEANS FOR SENSING THE OXYGEN CONCENTRATION IN SAID ATMOSPHERE IN SAID COMPARTMENT MEANS, VALVE CONTROL MEANS RESPONSIVE TO SAID OXYGEN SENSING MEANS AND CONNECTED TO CONTROL SAID VALVE MEANS, WHEREBY SAID VALVE MEANS IS ACTUATED TO PERMIT SAID INERT GAS MATERIAL TO FLOW FROM SAID SOURCE STORAGE MEANS INTO THE INTERIOR OF SAID COMPARTMENT MEANS TO BECOME PART OF SAID ATMOSPHERE THEREIN WHEN SAID OXYGEN SENSING MEANS SENSES OXYGEN IN SAID ATMOSPHERE IN SAID COMPARTMENT MEANS AT A CONCENTRATION ABOVE A PREDETERMINED VALUE AND TO PREVENT THE FLOW OF SAID INERT GAS MATERIAL FROM SAID STORAGE MEANS INTO THE INTERIOR OF SAID COMPARTMENT MEANS WHEN SAID OXYGEN SENSING MEANS SENSES OXYGEN IN SAID ATMOSPHERE IN SAID COMPARTMENT MEANS AT A CONCENTRATION BELOW SAID PREDETERMINED VALUE.