Rotary pump with exclusively hydrodynamically suspended...

Details Rotary pump with exclusively hydrodynamically suspended... Rotary pump with exclusively hydrodynamically suspended...

2005-11-22

2005-11-22

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

With shaft connected fluid force subjected thrust balancing...

C415S900000

Reexamination Certificate

active

06966748

ABSTRACT:
A pump assembly1, 33, 200adapted for continuous flow pumping of blood. In a particular form the pump1, 200is a centrifugal pump wherein the impeller100, 204is entirely sealed within the pump housing2, 201and is exclusively hydrodynamically suspended therein as the impeller rotates within the fluid105urged by electromagnetic means external to the pump cavity106, 203.Hydrodynamic suspension is assisted by the impeller100, 204having deformities therein such as blades8with surfaces tapered from the leading edges102, 223to the trailing edges103, 224of bottom and top edges221, 222thereof.

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