Abstract: A motor for a pump, especially a pump for a drum, barrel, or other tanks or containers. The motor has a housing in which a rotor is surrounded by a stator. The motor is an electronically commutated direct current motor that has no brushes. The switch or control device of the motor is an electronic switch or control device that is accommodated in the housing.

Abstract: A fluid pump has a casing and a support tube mounted within the casing. A rotatably mounted drive shaft is inserted through the support tube and has a propeller mounted on one end thereof for moving fluid through the pump. A helical shaped bearing is seated between the drive shaft and the support tube for supporting the shaft and permitting fluid flow therethrough.

Abstract: A pump has a rotor-carrying pump shaft rotatably supported within an internal pipe by a plurality of spaced bearings. A lowermost bearing is located in the vicinity of the rotor near the end of the internal pipe. Adjacent to the lowermost bearing is a seal provided in a reduced-pressure chamber within the internal pipe, the chamber being closed off at the lower end by the bearing juxtaposed to the rotor. The reduced-pressure chamber is connected to an outlet opening in an external pipe which surrounds the internal pipe and is spaced therefrom to provide a transport channel for effluent material being moved by the rotating rotor.