Patent ID: 8485780

Claim:
A pump assembly comprising: a pump ( 6 ) having a number of pump stages ( 10 ) extending along a longitudinal axis (X) of the pump ( 6 ); and at least one component ( 12 , 30 , 14 ) having an axial length dependent upon the number of pump stages ( 10 ), the at least one component ( 12 , 30 , 14 ) having two axial ends ( 18 ), wherein no connection configuration is formed in the component ( 12 , 14 , 30 ) itself and is limited to the axial end, the at least one component ( 12 , 30 , 14 ) being connected at one or both of the axial ends with at least one of a friction fit and a positive fit to a connection element ( 20 , 22 , 32 , 58 ) which is connected to adjacent parts of the pump assembly, or is provided for coupling to adjacent parts of the pump assembly, and wherein at least a portion of the connection element ( 20 , 22 , 32 , 58 ) extends outwardly along the longitudinal axis (X) beyond at least one of the two axial ends ( 18 ) of the at least one component ( 12 , 30 , 14 ).