A fluid pump includes an electric motor having a commutator and one or more brushes communicated with the commutator, and a pumping assembly driven by the electric motor. An outer shell of the pump encloses at least a portion of the electric motor and the ...

Fuel pump (10) may comprise a casing (18) and a substantially disc-shaped impeller (20) which is rotatably disposed within the casing (18). A first group of concavities (21a) may be formed in a lower face of the impeller (20). A second group of concavities...

In a fuel pump having a high pump efficiency, an annular portion (54) is formed on an outer periphery of an impeller (40) to let one- and opposite-side blade grooves (50) be independent of each other. Then, various improvements are made such as tilting fro...

To make a Wesco type fuel pump to supply pressure-increased fuel toward a fuel injection valve with no time delay at a time of restarting an engine with an excellent restarting property, an impeller (8) which is rotated by an electric motor (M) arranged wi...

In a fuel pump (10), four permanent magnets (30) are installed in a housing (12). An armature (40) is installed inside the permanent magnets (30) rotatably. Six magnetic pole coil portions (50) of the armature (40) are installed in a central core (42). Eac...

In a fuel pump having a high pump efficiency, an annular portion (54) is formed on an outer periphery of an impeller (40) to let one- and opposite-side blade grooves (50) be independent of each other. Then, various improvements are made such as tilting fro...

An electric fuel pump for supplying fuel by rotationally driving an impeller (30) within a pump flow path (13) with the aid of a motor section (3), wherein vane segments (31A, 31B) of the impeller (30) are staggered by a prescribed distance (d) at the fron...