Patent ID: 6702555
Filing Date: 2004-03-09
Classification: F04D

Abstract:
A fluid pump, comprising:a housing having a housing cavity therein with an inlet and an outlet; a diffuser having an internal diffuser cavity, the diffuser substantially disposed within the housing cavity and at least a portion of which is attached to the housing; an electric motor stator assembly substantially disposed within the diffuser cavity; a tubular member disposed within the diffuser cavity and sealingly contacting the diffuser to isolate at least the stator assembly from the working fluid; an impeller rotatably disposed near the inlet; an electric motor rotor assembly substantially and rotatably disposed within the tubular member and connected to the impeller for pumping the fluid from the inlet to the outlet; and an elastomeric material disposed between the tubular member and the diffuser for providing a seal between the tubular member and the diffuser.