A laundry treatment apparatus is disclosed. The laundry treatment apparatus includes a tub provided in a cabinet for storing water, a water supply unit for supplying water to the tub, a drum rotatably provided in the tub for storing laundry, a first pump including a first housing for receiving water discharged from the tub and an impeller rotatably provided in the first housing for discharging the water introduced into the first housing out of the first housing, a drainage pipe configured to extend through a height higher than the maximum possible level of water in the tub for guiding the water discharged from the first housing out of the cabinet, and a second pump including a first gear and a second gear rotatably provided in a second housing, into which the water discharged from the tub is introduced, the second pump being configured to move the water introduced into the second housing to the drainage pipe when the first gear and the second gear are rotated.

A fluid pumping device is disclosed. The fluid pumping device includes a housing having a front end and a rear end, a fluid discharge opening in the front end of the housing, a pump assembly, a crank assembly rotatably connected to the pump assembly wherein the crank assembly operates the pump assembly, and a fluid storage reservoir connected to the gear housing from which fluid is drawn into the gear housing to be pumped through the fluid discharge opening.

A drill-powered fluid transfer pump apparatus, kit and system. In accordance with certain embodiments, a pump housing is configured to be selectively mounted to a variety of surfaces and in a variety of orientations for ease and safety of operation. In certain embodiments, the pump housing comprises at least one elongated aperture configured to be selectively coupled to the upper rim of a 5-gallon bucket. The drill-powered fluid transfer pump kit and system may comprise one or more straps configured to interface with one or more portions of the pump housing to selectively secure the pump housing to the variety of surfaces.

A drill-powered fluid transfer pump apparatus, kit and system. In accordance with certain embodiments, a pump housing is configured to be selectively mounted to a variety of surfaces and in a variety of orientations for ease and safety of operation. In certain embodiments, the pump housing comprises at least one elongated aperture configured to be selectively coupled to the upper rim of a 5-gallon bucket. The drill-powered fluid transfer pump kit and system may comprise one or more straps configured to interface with one or more portions of the pump housing to selectively secure the pump housing to the variety of surfaces.

An internal gear pump or motor includes inner and outer rotors that mesh together. An internal electric motor or generator may include a stator supported by a support element that passes through bearings of the outer rotor and the inner rotor may act as a rotor of the electric motor or generator. With or without the stator, the support element may support bearings of the inner rotor. Fluids may be supplied via the support element for cooling, lubrication or to flush a working fluid out of portions of the pump or motor, such as bearings. Flushing may also occur via channels in the housing. Axial faces of one of a pair of adjacent elements may include portions for improved axial sealing and wearing in of the other of the pair. Fluid may enter and exit chambers between the inner and outer rotors by radial ports.