Hermetic motor cooling by liquid refrigerant

Claim 1

A HERMETICALLY SEALED AND COOLED MOTOR IN A REFRIGERATION SYSTEM CARRYING A VAPORIZABLE REFRIGERANT, SAID MOTOR INCLUDING; A STATOR, A ROTOR JOURNALLED FOR ROTATING IN THE STATOR, MEANS IN THE ROTOR FORMING AXIALLY EXTENDING PASSAGES THERETHROUGH, AND A CASING SURROUNDING THE ROTOR AND STATOR AND DEFINING A HERMETIC ENCLOSURE; (A) A PAIR OF LONGITUDINALLY SPACED PANELS CARRIED PERIPHERALLY ON THE STATOR AND DEFINING A LIQUID HOLDING CHAMBER INTERMEDIATE THE RESPECTIVE CASING, STATOR AND SPACED PANELS, AND FORMING OPPOSED END CHAMBERS IN THE CASING SEPARATED BY SAID LIQUID HOLDING CHAMBER, (B) MEANS FORMING AN INLET TO SAID LIQUID HOLDING CHAMBER AND BEING COMMUNICATED WITH A SOURCE OF LIQUID REFRIGERANT IN SAID SYSTEM, (C) OVERFLOW CONDUIT MEANS COMMUNICATED WITH SAID LIQUID HOLDING CHAMBER AND HAVING AN OPENING DISPOSED IN THE UPPER PORTION OF SAID CHAMBER TO MAINTAIN A PREDETERMINED LEVEL OF LIQUID REFRIGERANT THEREIN, SAID OVERFLOW CONDUIT MEANS BEING COMMUNICATED WITH SAID SYSTEM FOR RETURNING REFRIGERANT THERETO, (D) PASSAGE MEANS COMMUNICATED THE UPPER PORTION OF SAID LIQUID HOLDING CHAMBER ABOVE THE LEVEL OF LIQUID THEREIN WITH AT LEAST ONE OF SAID OPPOSED END CHAMBERS IN THE CASING FOR DIRECTING REFRIGERANT IN VAPOR PHASE TO SAID AT LEAST ONE END CHAMBER, AND (E) CONDUIT MEANS BEING COMMUNICATED WITH THE LOWER PORTION OF SAID RESPECTIVE OPPOSED END CHAMBERS AND CONDUCTING REFRIGERANT THEREFROM TO THE SYSTEM.