Patent ID: 6102674
Filing Date: 2000-08-15
Classification: F04D,F16C,H02K

Abstract:
An electrically operated coolant pump comprising:a rotor including a rotor shaft with hollow design and an impeller which is connected to said rotor shaft, wherein the rotor is encompassed by a stator of an electromotor, and wherein a liquid supply to the impeller is made through the rotor shaft, with the stator being arranged in a stator chamber of a motor housing and the rotor shaft being rotationally held in the motor housing, with the bearing of the rotor shaft being effected by way of roller bearings,wherein at least one roller bearing is arranged as a leakproof roller bearing and sealing elements are integrated in the roller bearing cage, and wherein the stator chamber which is separated in a leakproof manner from the conveying liquid is provided with a dry design.