Patent ID: 9212660
Filing Date: 2015-12-15
Classification: F04C,F16D

Abstract:
1. A vane pump comprising: an electrical drive unit with an electric motor and a motor shaft; a pump chamber attached to the electrical drive unit; a rotor having a plurality of blades each arranged in a guiding slot, said rotor being arranged concentrically to the motor shaft within the pump chamber; the motor shaft being engaged with the rotor by way of a tappet having a torsionally rigid connection with the motor shaft; the tappet comprises at least one peg which is engaged in at least one rotor recess that corresponds to the at least one peg; the at least one rotor recess having an oval shape; and the at least one peg being contoured such that two first curved contoured sections of a said peg each form one contact area with one oblong planar section of a corresponding rotor recess.