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US20110097223 OIL FILTER FOR DOWNHOLE MOTOR  
An oil filter for use in an electric motor forming part of a downhole device such as an ESP, comprising a two-part filter including a first part formed from a porous material which acts to filter...
US20110027110 OIL FILTER FOR DOWNHOLE MOTOR  
A method of controlling operation of an ESP, comprising determining at least one operating speed (rpm) at which the ESP experiences unacceptable levels of lateral vibrations; and applying a...
US20120187788 WATERTIGHT APPARATUS FOR AN UNDERWATER MOTOR  
The present invention relates to a watertight apparatus for an underwater motor, comprising a double oil jacket for preventing high-pressure water from entering the underwater motor along a rotary...
US20140191602 Electric Motor Systems and Methods  
Electric motor systems and methods may provide highly efficient operation. The electric motor systems and methods discussed herein provide an oil filled motor that is low speed and utilizes...
US20120080970 HIGH VOLTAGE AND HIGH TEMPERATURE WINDING INSULATION FOR ESP MOTOR  
A litz wire includes, in one embodiment, a plurality of twisted strands, wherein one or more of the strands includes a composite magnet wire. The composite magnet wire includes a metal wire having...
US20090195117 ELECTRIC SUBMERSIBLE PUMP (ESP) HAVING A MOTOR WITH MECHANICALLY LOCKED STATOR LAMINATIONS  
A submersible pumping system for use downhole, wherein the system includes a pump and a pump motor for driving the pump. The pump motor includes a housing with corresponding stator and rotor...
US20110211978 IMMERSION MOTOR  
An immersion motor includes a housing (3) having a wall (4) with a watertight cable penetration (5, 6; 5, 6′). The cable penetration includes an inlet (5) in the wall (4) for a cable (25) and a...
US20120001506 COMMUTATION SYSTEM FOR A DC MOTOR  
A commutation system for a DC motor having a stator including a plurality of windings and a permanent magnet assembly, the assembly comprising: a housing; at least three collector segments...
US20070182259 Electric pump unit  
In an electric pump unit in which a single shaft (main shaft) functions both as a rotation shaft of a pump section and that of a motor section, a rotor of a motor has a structure in which a magnet...
US20070176511 Motor and a fuel pump using the same  
A motor includes a stator core, insulators, coils and a rotor. The stator core includes a plurality of coil cores, which are circumferentially arranged, wherein each of the plurality of coil cores...
US20070152523 Submersible Motor with molded encapsulated stator  
A submersible motor is disclosed. The motor comprises a combination stator core/end bell assembly comprising a stator core encapsulated in a polymeric material and a first end bell integrally...
US20080088189 SUBMERSIBLE DIRECT-CURRENT ELECTRIC MOTOR  
The claimed invention relates to a submersible direct-current electric motor to be used, in particular, for driving a submersible pump in downhole oil production. The claimed motor includes a...
US20070090704 Outer-rotor-driving pump having annular ferrite magnet with grain alignment on its inner periphery  
A pump driven by an outer rotor and having an annular ferrite magnet with grain alignment on its inner periphery comprising a housing, a wheel blade, a stator and an outer rotor surrounding the...
US20080136277 Motor-Pump Unit Having a Wet-Running Electric Motor and a Hydraulic Pump which is Driven by the Electric Motor  
The invention relates to a motor-pump unit having a wet-running electric motor and a hydraulic pump which is driven by the electric motor. The electric motor has a rotor and a laminated stator...
US20070159020 Water pump and bearing thereof  
A bearing of a water pump is adapted to be used with a washer and includes an approximately cylindrical body with an axial hole defined in its center. One end surface of the bearing, which faces...
US20150015105 SHIP'S PROPULSION UNIT  
The present disclosure relates to a ship's propulsion unit such as a ship's azimuthing propulsion unit. The propulsion unit can include at least one supporting metal sheet arranged between an...
US20060127253 Inner drive for magnetic drive pump  
An inner drive for a magnetic drive pump includes a magnet supported on a yoke. The inner drive is driven about an axis to pump a corrosive process fluid. The magnet and yoke are fully...
US20100327582 Generator With Falling Stator  
A generator is provided including a rotatable pressure vessel with an inner and outer surface. Electromagnets are disposed on the inner surface of the pressure vessel. A biasing structure is...
US20140271271 SUBMERSIBLE PUMP  
A replaceable motor module for a groundwater sampling device including an inner housing defined by a cylindrical shape and having a first alignment pin. A DC-operated electric motor is...
US20070286752 Water Pump Especially for Ponds, Aquariums, Fountains or the Like  
A water pump has a housing with a pump housing part, provided with an intake opening and an exit opening, and a motor housing part. An impeller with a shaft is rotatably arranged in the pump...
US20050151441 Commutator, and electrical motor and fluid pump using the same  
A commutator includes plural segments arranged in a rotational direction, and segment terminals electrically connected to respective segments. The segment terminals include middle terminals and...
US20090162225 PUMP FOR LIQUID COOLING SYSTEM  
A pump comprises a base (10), a case (20) fixed on the base, a rotor (30) received between the case and the base, and an inner stator (40) and an outer stator (50) accommodated in the case. The...
US20070252455 Stator Lead Retainer  
A stator lead retainer includes a stator lead retainer body having a plurality of through-holes extending longitudinally therethrough, each through-hole configured for receiving a stator lead. The...
US20140077499 UNDERWATER ELECTRIC ROTATING DEVICE HAVING WATERPROOFING STRUCTURE AND UNDERWATER GENERATOR USING THE SAME  
The present invention provides an underwater electric rotating device and an underwater generator using the same. The device includes a rotating shaft, at least a portion of which is rotated in an...
US20070237660 Pump and manufacturing method thereof  
A pump includes a pump unit having an impeller for sucking and/or discharging liquid; a motor unit for driving the pump unit; a case for accommodating the pump unit; a partition plate for...
US20060076843 Isolated electric power generator by utilizing leaking magnetic flux  
An isolated electric power generator by utilizing leaking magnetic flux i includes a ferromagnetic core, at least one coil winding the ferromagnetic core, at least one pair of output terminals,...
US20130119800 DYNAMO-ELECTRIC MACHINE  
A dynamo-electric machine, for example a marine propulsion unit, includes a stator and a rotor in the form of an impeller. The impeller is rim-driven and includes an annular core of ferromagnetic...
US20120282120 ELECTRIC CABLE, ELECTRIC MOTOR AND ELECTRIC SUBMERSIBLE PUMP  
In accordance with one aspect of the present invention, an electric motor is provided that includes a housing, a stator, and a rotor, wherein the stator and rotor are disposed within the housing....
US20130106111 Electrical Machine for Submerged Application and Energy Conversion System  
The invention relates to an electrical machine for submerged applications and an energy conversion system for conversion of mechanical energy of unidirectional or reciprocating linear or...
US20110002799 Method for locking a stator lamination in a motor  
An electrical submersible pumping system (ESP) having a stator lamination stack that is anchored to prevent the stack from spinning. The ESP includes a motor section having a housing with an axial...
US20100201129 IMMERSIBLE ENERGY GENERATION INSTALLATION  
A submersible power generation plant includes a water turbine standing freely on a support structure in an ambient flow; an electric generator which is driven at least indirectly by the water...
US20150123506 MODULAR PERMANENT MAGNET MOTOR AND PUMP ASSEMBLY  
A permanent magnet machine, a rotor assembly for the machine, and a pump assembly. The permanent magnet machine includes a stator assembly including a stator core configured to generate a magnetic...
US20080197731 Brushless motor and pump mounted with brushless motor  
A bottom portion side rib and a flange portion side rib are respectively formed on the bottom portion and the flange portion of the inner cover. The bottom portion side rib includes a plurality of...
US20100314957 PRESSURE COMPENSATED DYNAMIC SEAL FOR DEEP SUBMERGENCE ELECTRO-MECHANICAL LINEAR ACTUATORS  
A pressure compensated dynamic seal assembly (26) for a deep submergence actuator (10). A pressure compensated isolation fluid (28) is supplied to an isolation region (34) established between a...
US20120269660 ELECTRIC MOTOR AND ELECTRIC SUBMERSIBLE PUMP  
In accordance with one aspect of the present invention, an electric motor is provided that includes a housing, a stator, and a rotor, wherein the stator and the rotor are disposed within the...
US20150034294 Submersible Electrical Machine and Method  
A submersible electrical machine includes a first magnetic package spaced axially from a second magnetic package, a first stator displaced axially from the first magnetic package by a first air...
US20070224056 System and Method for Protecting a Submersible Motor  
A technique is provided to facilitate pumping of fluids in a well. A submersible pumping system utilizes a submersible motor to power a submersible pump. A motor protector works in cooperation...
US20090256443 HOLLOW RING TORUS MAGNET GENERATOR  
A hollow ring torus permanent magnet generator, with a sphere shaped permanent magnet which spins/revolves within the hollow ring torus passing through insulated copper magnet wire windings which...
US20110133582 ENCAPSULATED SUBMERSIBLE PUMP  
Apparatus is provided for use in a submersible pump, comprising; a stator having electrical windings and configured with a cavity to receive a rotor of a motor and to provide an electromotive...
US20140077640 SUBMERGED MOTOR  
The submerged motor comprises an external case (2) having a tubular shape inside which is coaxially inserted an electric motor unit (3). Closure means (10, 20) are suitable to isolate a room for...
US20110198955 ELECTRICAL MACHINE WITH DUAL INSULATED COIL ASSEMBLY  
An electrical coil assembly for use in a flooded electrical machine operating in an electrically conductive and/or chemically aggressive medium, and a method for manufacturing an electrical coil...
US20070126297 Shaftless propeller  
A shaftless propeller may be made to cooperate with a liquid, with a stator having a circular opening and a rotor mounted in the opening and having an annular rotor body with a multiplicity of...
US20090058221 SYSTEM AND METHOD FOR PROTECTING SUBMERSIBLE MOTOR WINDING  
A technique is provided for constructing a submersible motor. The submersible motor has a stator positioned within a housing. Windings are arranged through the stator with end coils on opposite...
US20110211979 COOLING SYSTEM FOR A MULTISTAGE ELECTRIC MOTOR  
A multistage electric motor includes a plurality of motor stages connected in series, each motor stage comprising a stator, and a rotor; a plurality of cooling fluid paths, each cooling fluid path...
US20090022609 DEVICE FOR HYDROPROTECTION OF A BOREHOLE PUMP ELECTRIC MOTOR  
The invention relates to crude oil production, and can be suitably used for hydroprotection of submersible electric centrifugal motors. A hydroprotection protector of a borehole pump electric...
US20110058966 FLUSHING SYSTEM  
An apparatus includes a pump, a motor operatively coupled to the pump, and a flushing system. The motor includes a stator and a rotor disposed in a rotor cavity isolated from the stator. The...
US20150171697 ELECTRICAL MOTOR FOR A SUBMERSIBLE MACHINE  
An electrical motor for a submersible machine, including a stator unit having a stator core and a rotor unit that is rotatably arranged in the stator unit. The rotor unit includes a rotor core and...
US20100259135 SUBMERSIBLE ELECTRIC MOTOR ASSEMBLY  
According to an embodiment, a submersible electric motor assembly has: a casing; an electric motor that is accommodated in the casing; and an electric insulating substance that is filled between...
US20070052310 Fluid pump and electric motor, and manufacturing method for the same  
A fluid pump includes a motor portion that has a stationary part and a rotator. The inner circumferential periphery of the stationary part and the outer circumferential periphery of the rotator...
US20140054993 ELECTRICAL MOTOR  
The present invention relates to a downhole electrical motor elongated in a longitudinal direction, comprising a housing, a stator comprised inside the housing, a rotor comprised inside the stator...

Matches 1 - 50 out of 72 1 2 >