Patent ID: 6309188
Filing Date: 2001-10-30
Classification: F04D,H02K

Abstract:
A centrifugal pump, comprising:a) a pump volute having a centrally located first non-circular recess;b) an impeller shaft having an impeller at one end thereof, a first ceramic shaft end extending through the center of the impeller and a second ceramic shaft end extending through the center of the other end thereof;c) a drive motor housing having an impeller shaft channel for receiving said impeller shaft, said impeller shaft channel terminating in a second non-circular recess;d) a first non-circular bearing member being disposed in said first non-circular recess; ande) a second non-circular bearing member being disposed in said second non-circular recess, whereinsaid first ceramic shaft end is rotatably disposed in said first non-circular bearing member, andsaid second ceramic shaft end is rotatably disposed in said second non-circular bearing member.