FUEL FEEDER AND MANUFACTURE THEREOF

An electric motor in which the commutator and brushes have high resistance to wear even when wetted by, for example diesel fuel, is provided for a fuel delivery unit. The motor has carbon brushes (16) and the individual commutator segments (25) on base member (24) consist of sintered carbon and a binding agent. A copper metal layer (55) soldered to the individual connecting elements (56) is provided at one end surface of the segments (25) and terminal wires (57) of the armature winding packet are connected to the individual connecting elements. The commutator (15) may be produced by sintering carbon containing material with a simultaneous sintering-on of the copper metal layer 55, forcing ring (15) member (24) and soldering the copper layer (55) to the connecting elements (56), casting resin (59) into longitudinal grooves in the ring (15), and sawing the ring (15) in a radial direction so that the individual segments (25) are separated from one another. Pump (1) may be roller type in which a second suction region (44) ensures removal of gases/vapours from the suction or pump region. Other pump types are mentioned.