Patent ID: 8651844

Claim:
A hybrid pump for delivering a liquid pump medium, the hybrid pump comprising: a housing that has a pump space, an inlet opening into the pump space, and an outlet leading out of pump space; a rotor that is arranged in the pump space, is rotatable about a rotor axis, and is made of inelastic plastic; wherein the pump space has a rounded running surface and a respective side face on opposite sides of rotor; wherein the rotor is eccentrically arranged in the pump space relative to the running surface; wherein the rotor has a baseplate associated with a lower side face of the pump space and several rotor parts arranged at uniform intervals in the circumferential direction extending towards one of the side faces of the pump space and fixedly connected to the baseplate; wherein a curved rotor blade is pivotably hinged to the outer end of each rotor part and wherein, between adjacent rotor parts and rotor blades, pump chambers are formed that are open to the upper side face of the pump space, wherein bottoms of the pump chambers are formed by the baseplate of the rotor; wherein the bottoms of the pump chambers rise in a concave curved shape from an outer edge of the baseplate inwardly towards the rotor axis.