Patent ID: 9664199
Date: 2017-05-30
CPC Classifications: F04D,F16D

Claim:
1. A centrifugal pump assembly comprising: a motor including a motor shaft, the motor shaft having a threaded internal bore; an impeller including an impeller shaft; a coupling sleeve connecting the motor shaft to the impeller shaft, the coupling sleeve being arranged on the motor shaft and including a first threaded section; and an adjustment nut including a second threaded section in threaded communication with the first threaded section allowing the coupling sleeve to be adjustably positioned in an axial position relative to the adjustment nut and motor shaft, the adjustment nut being freely rotatable on a screw threaded into the threaded internal bore and being securable against an end surface of an end of the motor shaft with the screw; wherein the axial position of the impeller shaft relative to the motor shaft is based on the axial position of the coupling sleeve relative to the adjustment nut and the motor shaft.