Patent ID: 9422937
Filing Date: 2016-08-23
CPC Classification: F04D

Claim Text:
1. A vacuum pump, comprising at least one molecular pump stage ( 12 ) which includes a rotor member ( 34 ) which forms a pump-active surface ( 50 ) of the molecular pump stage ( 12 ), and having at least one side channel pump stage ( 18 ) which is arranged downstream of the molecular pump stage ( 12 ) and which includes a plurality of rotor elements ( 48 ), wherein the rotor elements ( 48 ) of the at least one side channel pump stage ( 18 ) are supported by the rotor member ( 34 ) of the molecular pump stage ( 12 ), wherein the rotor member ( 34 ) includes a base which is substantially formed as a sleeve and extends from a rotor hub ( 40 ) supporting the rotor member ( 34 ) up to a support ( 46 ) of the rotor member ( 34 ) at which the rotor elements ( 48 ) are arranged.