Motor driven pumps

Claim 1

A MOTOR DRIVEN PUMP COMPRISING A SUPPORTING PLATE WITH AN IMPELLER HOUSING ON ONE SIDE THEREOF, AND A MOTOR HOUSING ON THE OTHER SIDE THEREOF HAVING A MOTOR STATOR THEREIN IN SPACED RELATION THERETO, SUPPORTING MEMBERS FOR SAID MOTOR STATOR EXTENDING THROUGH SAID MOTOR STATOR AND INTO SAID SUPPORTING PLATE, SAID SUPPORTING PLATE HAVING A CENTRAL OPENING, A CYLINDRICAL SLEEVE EXTENDING FROM SAID SUPPORTING PLATE AND HAVING A FREE END IN SAID MOTOR HOUSING, MEMBERS FOR MOUNTING THE END OF SAID SLEEVE OPPOSITE SAID FREE END IN SAID OPENING, SAID MOUNTING MEMBERS PROVIDING THE SOLE SUPPORT FOR SAID SLEEVE, A CLOSURE MEMBER AT THE OTHER END OF SAID SLEEVE, THE INTERIOR OF SAID SLEEVE PROVIDING A MOTOR ROTOR CHAMBER IN COMMUNICATION WITH THE INTERIOR OF SAID IMPELLER HOUSING, SPACED BEARING BLOCKS IN SAID SLEEVE INSERTABLE THROUGH SAID CENTRAL OPENING, A SHAFT JOURNALED IN SAID BEARING BLOCKS AND HAVING A MOTOR ROTOR THEREON INTERPOSED BETWEEN SAID BEARING BLOCKS, SAID SHAFT EXTENDING INTO SAID IMPELLER HOUSING AND HAVING A FLUID IMPELLER IN SAID IMPELLER HOUSING, THE ASSEMBLY COMPRISING SAID SHAFT, SAID BEARING BLOCKS AND SAID MOTOR ROTOR BEING SUPPORTED FROM SAID SUPPORTING PLATE BY SAID SLEEVE, AND A MEMBER IN SAID SLEEVE RELEASABLY RETAINING SAID ASSEMBLY IN SAID SLEEVE.