Refrigerant apparatus

Claim 1

IN REFRIGERANT APPARATUS, THE COMBINATION OF, A HERMETICALLY SEALED SHELL INCLUDING A LOWER LIQUID SUMP REGION AND AN UPPER GAS SPACE, A COMPRESSOR INCLUDING AN OUTER HOUSING LOCATED WITHIN SAID GAS SPACE FOR MUFFLING NOISES, MOTOR MEANS FOR DRIVING SAID COMPRESSOR INCLUDING A STATOR AND A ROTOR, A SHAFT HAVING A PROTION THEREON ROTATABLY SUPPORTED BY SAID COMPRESSOR HOUSING AND A PORTION THEREOF SECURED TO SAID ROTOR FOR DRIVING THE COMPRESSOR UPON ENERGIZATION OF SAID MOTOR MEANS, MEANS FORMING AN INTERNAL COOLING SURFACE IN SAID SHAFT PORTION ADJACENT SAID ROTOR LOCATED IN DIRECT HEAT TRANSFER RELATIONSHIP THEREWITH, PUMPING MEANS FOR DRAWING LIQUID FROM SAID SUMP REGION AND PASSING IT ACROSS SAID INTERNAL COOLING SURFACE FOR REMOVING HEAT FROM SAID ROTOR, SAID PUMPING MEANS INCLUDING MEANS FOR SEPARATING GAS FROM THE LIQUID MEANS INCLUDING AN ELONGATED INSERT ELEMENT IN SAID SHAFT HAVING A TUBULAR PORTION ARRANGED CONCENTRICALLY OF SAID COOLING SURFACE IN SPACED RELATIONSHIP THEREWITH FOR SEPARATELY DIRECTING SAID GAS THROUGH SAID SHAFT TO A POINT INTERIORLY OF THE GAS SPACE ABOVE SAID MOTOR MEANS, AND MEANS FOR COLLECTING AND DIRECTING A PORTION OF THE LIQUID ACROSS THE PORTION OF SAID SHAFT ROTATABLY SUPPORTED BY SAID COMPRESSOR HOUSING FOR PREVENTING FRICTIONAL WEAR THEREBETWEEN.