Submersible motor construction

Claim 1

IN A SUBMERSIBLE MOTOR; A MOTOR CASING COMPRISING AN OUTER SLEEVE AND END MEMBERS AT OPPOSITE ENDS OF THE SLEEVES SEALED THERETO, A MOTOR STATOR IN SAID SLEEVE, A MOTOR ROTOR ASSOCIATED WITH SAID STATOR HAVING SUPPORTING SHAFT MEANS JOURNALED IN SAID MEMBERS, A THIN SLEEVE EXTENDING THROUGH THE INSIDE OF THE STATOR AND AROUND THE ROTOR AND FROM ONE OF SAID END MEMBERS TO THE OTHER DEFINING INSIDE OF THE CASING SEPARATE ROTOR AND STATOR CHAMBERS, RADIALLY SPACED PASSAGES IN THE LOWER ONE OF SAID END MEMBERS COMMUNICATING WITH SAID ROTOR AND STATOR CHAMBERS RESPECTIVELY, A FLEXIBLE MEMBER SEALINGLY CONNECTED TO THE LOWER ONE OF SAID END MEMBERS BETWEEN SAID RADIALLY SPACED PASSAGES, SAID FLEXIBLE MEMBER ALSO BEING SEALINGLY CONNECTED TO THE LOWER ONE OF SAID END MEMBERS ADJACENT THE PERIPHERY OF THE SAID END MEMBER THEREBY SEALING THE STATOR CHAMBER AND HYDRAULICALLY ISOLATING THE STATOR CHAMBER FROM THE ROTOR CHAMBER WHILE PROVIDING MEANS FOR EQUALIZING THE PRESSURES THEREBETWEEN, AND FLEXIBLE RESERVOIR MEANS SEALINGLY CONNECTED TO THE SAID LOWER ONE OF SAID END MEMBERS AND COMMUNICATING WITH THE PASSAGE LEADING TO SAID ROTOR CHAMBER.