Patent ID: 6099261
Filing Date: 2000-08-08
Classification: F04C

Abstract:
A roller vane stage for a fuel pump comprising:an inlet plate, an outlet plate, and a spacer positioned therebetween, said spacer having an eccentric inner surface defining a rotor space therein, said inlet plate having at least one inlet port therethrough communicating with said rotor space, and said outlet plate having at least one outlet port therethrough communicating with said rotor space; anda rotor mounted for rotation within said rotor space and having a plurality of lobes spaced circumferentially about said rotor and opening radially outwardly towards said eccentric inner surface, a roller associated with and movable within each said lobe, said rotor further having a driver slot adapted to be engaged by a driver tang of a motor of the fuel pump to rotate said rotor within said rotor space so as to pump fuel, said rotor having a predetermined thickness, said driver slot having a depth less than said rotor thickness such that said driver slot does not extend completely through said rotor.