Patent ID: 7014417

Claim:
Hybrid pump ( 1 ) having a housing ( 2 ), into which at least one suction connection ( 10 ) and one pressure connection ( 11 ) open, and in the housing chamber ( 3 ) of which, which is enclosed essentially in circular manner, a rotor ( 5 ) is arranged eccentrically, which has a number of rotor vanes ( 6 ) on its circumference, which are spaced apart, and radially arranged at least in some sections, and made of a material that is resiliently, elastically deformable, wherein the eccentricity ( 14 ) of the rotor ( 5 ) relative to the housing chamber ( 3 ), as well as the elasticity of the rotor vanes ( 6 ) are selected in such a manner that in a first range of low rotational speed, each rotor vane ( 6 ) does not rest against circumference segments ( 4 ) of the housing chamber ( 3 ) with its radially distant end region ( 7 ), or rests against them only part of the time, during a revolution of the rotor ( 5 ) so that the hybrid pump ( 1 ) works in a not self-priming manner, whereas in a second range of greater rotational speed, all of the rotor vanes ( 6 ) rest against the inner wall ( 4 ) of the housing chamber ( 3 ) with their radially distant end regions ( 7 ), under the influence of centrifugal force, essentially during the entire revolution of the rotor ( 5 ) so that the hybrid pump ( 1 ) works in a self-priming manner.