Fluid pressure booster

Claim 1

A FLUID PUMPING DEVICE COMPRISING: (A) AN INLET MEMBER, (B) AN OUTLET MEMBER, (C) A HOLLOW INTERMEDIATE MEMBER, (D) MEANS RIGIDLY BUT DETACHABLY INTERCONNECTING SAID INTERMEDIATE MEMBER TO AND BETWEEN SAID INLET AND OUTLET MEMBERS, (E) A MULTI-SECTION SHAFT ASSEMBLY JOURNALLED AT ITS OPPOSITE ENDS ON SAID INLET MEMBER AND OUTLET MEMBER AND EXTENDING THROUGH SAID HOLLOW INTERMEDIATE MEMBER, (F) A ROTOR ASSEMBLY COMPRISING A PLURALITY OF AXIALLY SLIDABLY INTERFITTING SECTIONS SURROUNDING THE CENTRAL PORTION OF SAID SHAFT ASSEMBLY IN RADIALLY SPACED RELATION THERETO AND AXIALLY CLAMPED IN DETACHABLY FIXED RELATION THERETO BETWEEN OPPOSED PORTIONS OF RELATIVELY AXIALLY MOVABLE SECTIONS OF SAID MULTI-SECTION SHAFT ASSEMBLY WHEREBY SAID SHAFT ASSEMBLY FUNCTIONS AS A TIE-BOLT FOR HOLDING THE SECTIONS OF SAID ROTOR ASSEMBLY IN PLACE WITHOUT MATERIAL DIRECT RADIAL RESTRAINT OF SUCH SECTIONS SO THAT SAID ROTOR SECTIONS CAN BE READILY REMOVED UPON DISASSEMBLY OF SAID SHAFT ASSEMBLY, (G) A STATOR ASSEMBLY COMPRISING A PLURALITY OF AXIALLY SLIDABLY INTERFITTING SECTIONS DISPOSED WITHIN SAID HOLLOW INTERMEDIATE MEMBER AND DETACHABLY, AXIALLY CLAMPED IN FIXED POSITION THEREIN BETWEEN SAID INLET AND OUTLET MEMBERS, (H) AT LEAST ONE OF SAID ROTOR SECTIONS COMPRISING AN IMPELLER STAGE AND AT LEAST ONE OF SAID STATOR SECTIONS COMPRISING AN INLET GUIDE VANE AND DIAPHRAGM COOPERATING WITH SAID IMPELLER STAGE TO GUIDE FLUID INTO THE INLET OF SAID IMPELLER STAGE, (I) AT LEAST ONE OF SAID ROTOR SECTIONS AT THE END OF SAID ROTOR ASSEMBLY ADJACENT SAID OUTLET MEMBER COMPRISING AN ANNULAR SPACER RING, AND (J) AT LEAST ONE OF SAID STATOR SECTIONS AT THE END OF SAID STATOR ASSEMBLY ADJACENT SAID OUTLET MEMBER COMPRISING A PAIR OF CONCENTRIC FLUID GUIDE RINGS EXTENDING COAXIALLY WITH SAID SPACER RING.