Patent ID: 6036453
Filing Date: 2000-03-14
Classification: F04C

Abstract:
A pump assembly, comprising:a frame;a stator coupled to the frame;a rotor associated with the stator and including a bore;a housing configured to define a cavity in which the rotor is disposed, the cavity including an open end and a closed end;a pump element driven by the rotor and stator and including a body attached to the housing and a pump chamber, said body including an inlet through which fluid enters the assembly and an outlet through which fluid exits the assembly, the body being configured to include a port in fluid communication with the pump chamber;an alignment spacer adjacent the open end of the housing and the body of the pump element, the alignment spacer being configured to include a plurality of apertures in fluid communication with the port and the cavity of the housing, the alignment spacer reducing lateral shifting of the pump relative to the housing;a bearing secured in the closed end of the housing and configured to include a bearing port; anda drive member journaled in the bearing and configured to include a longitudinally extending bore therethrough to define a fluid flowpath through the bore in the drive member, to the bearing port, to the cavity and the bore of the rotor, to the apertures in the alignment spacer, and through the port in the body of the pump.