Patent ID: 6164943
Filing Date: 2000-12-26
Classification: F04C,Y10T

Abstract:
An internal geared wheel pump without crescent-shaped piece, said pump comprising:an internal geared wheel having a plurality of gear teeth, each of said plurality of gear teeth having a base and a bearing flank;a pinion having a plurality of pinion teeth, each of said plurality of pinion teeth having a base and a bearing flank, said plurality of pinion teeth meshing with said plurality of gear teeth;said pinion and said geared wheel being mounted for rotation in a housing that has a suction connection and a pressure connection;said geared wheel having a plurality of radial passages, each of said plurality of radial passages producing a conductive connection between the base of one of said plurality of gear teeth and an envelope surface of said geared wheel; andwherein said conductive connections are produced between the bearing flanks of said plurality of gear teeth of said geared wheel or said plurality of pinion teeth of said pinion and said radial passages of said geared wheel.