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| Number | Title | Issue Date |
| 8421285 | Permanent magnet type electric power generator For providing a permanent magnet type generator that has a limited inside temperature rise gradient even if the capacity thereof is increased and permits to reduce the size thereof, the present invention provides a ventilation means that increases the inner gas (air... | 04/16/2013 |
| 8395289 | Brushless DC motor and a radiator thereof A brushless DC motor (100) and a radiating device thereof are provided. The brushless DC motor (100) includes a bracket (110), a stator (120) mounted on the bracket (110) and a rotor (130) rotating around the stator (120 | 03/12/2013 |
| 8314522 | Printed circuit board with ground conductor for electric motor, and electric motor A printed circuit board (PCB), in particular for an electric motor, has two opposite main surfaces with at least one main surface carrying electrical components. A plurality of outer end faces extend between the two opposite main surfaces. One of the outer end faces... | 11/20/2012 |
| 8242645 | Rotating electric machine enabling cooling of a cooling target region A rotating electric machine includes a rotation shaft arranged rotatably, a rotor having a storing hole capable of storing a permanent magnet, including the permanent magnet stored in the storing hole, and being fixed to the rotation shaft, a stator facing the rotor... | 08/14/2012 |
| 8242646 | Rotating electric machine and drive device There is provided a rotating electric machine capable of preventing a coolant from being retained at an outer surface of a rotor. This rotating electric machine includes a rotation shaft provided so as to be rotatable, a core body secured to the rotation shaft, a pe... | 08/14/2012 |
| 8203252 | Clamp and lock permanent magnets within a rotating electrical machine using pitched focused flux magnets Permanent magnets are mounted within an electrical machine in a pitched saw-tooth pattern around the rotor shaft. This focused flux configuration provides for improved magnet mounting strength without resort to bonding or taping; provides improved rotor and stator c... | 06/19/2012 |
| 8193666 | Motor and compressor technology An interior permanent magnet type brushless direct current (BLDC) motor includes a stator having a plurality of slots. The BLDC motor also includes a rotor positioned in the stator and that is rotatable with respect to the stator. The rotor has a rotor core, a plura... | 06/05/2012 |
| 8159094 | Electric motor having fluid circulation system and methods for cooling an electric motor An electric motor having a housing, a stator mounted in the housing, and a rotor mounted in the housing for rotation relative to the stator about a central axis. A plurality of fluid flow passages extend through the rotor between opposite ends. An electro-magnetic d... | 04/17/2012 |
| 8138642 | Oil cooled generator A rotor for a dynamoelectric machine may include a rotor shaft having a first shaft and a second shaft within the first shaft. The two shafts include discharge orifices for communicating a cooling fluid through the machine. A rotor core of the machine includes a lam... | 03/20/2012 |
| 8080908 | Cooling structure for rotor core in electric rotating machine A rotor for an electric rotating machine includes d-axis through holes located on respective d-axes, hollow shafts formed in both axial sides of a rotating shaft not inserted into a rotor core, presser plates mounted on both axial ends of the rotor core, cooling gro... | 12/20/2011 |
| 8076805 | Rotating electric machine with rotor cooling slots A rotor of a rotating electric machine includes a cylindrical rotor core, a plurality of coil slots provided on an outer periphery of the rotor core along a rotor axis direction, rotor coils disposed in the coil slots by laminating a plurality of field conductors th... | 12/13/2011 |
| 8049379 | Dynamoelectric machine rotors having enhanced heat transfer and method therefor A radial duct for a dynamoelectric machine having a rotor, and a plurality of radial slots in the rotor is provided. A plurality of coils are respectively seated in the radial slots, and the coils form a plurality of radially stacked turns. The radial duct includes ... | 11/01/2011 |
| 8040002 | Ventilated rotor of high-power turbogenerator for production of electricity A ventilated rotor of a high-power turbogenerator for the production of electricity has a shaft extending along an axis; a plurality of axial slots obtained in the shaft; a plurality of conductor bars arranged at least partly in the slots; a plurality of axial chann... | 10/18/2011 |
| 8030810 | Automotive electric machine An automotive electric machine provided with: a stator; a rotor, which is rotationally mounted coaxially to the stator and inside the stator to rotate about a rotation axis; a shaft, which is rotationally mounted about the rotation axis, supports the rotor, and is h... | 10/04/2011 |
| 8022583 | Direct current drive motor A direct current drive motor with a stator core, an end insulator, and a coil winding forming a stator, and a housing, a magnetic yoke shell, and multiple magnetic tiles, forming a rotor. The magnetic yoke shell and the magnetic tiles are disposed on the housing. Mu... | 09/20/2011 |
| 7994668 | Cooling system for rotating machine An electrical machine comprising a rotor is presented. The electrical machine includes the rotor disposed on a rotatable shaft and defining a plurality of radial protrusions extending from the shaft up to a periphery of the rotor. The radial protrusions having cavit... | 08/09/2011 |
| 7994665 | Engine electrical generator cooling device and method A rotor for an electrical generator is disclosed, including a rotor body having a circular portion and a cylindrical portion coaxial with the circular portion. A generally cylindrical recess is defined by the cylindrical portion and the first side of the circular po... | 08/09/2011 |
| 7994667 | Fan cooling of an electric engine An air cooling arrangement for an electric engine comprises a rotor, a stator disposed co-axially on the rotor, and a partition disposed between the rotor and the stator and extending along a complete axial length of the rotor and mounted on the rotor so as to be in... | 08/09/2011 |
| 7994666 | Permanent magnet electrical rotating machine, wind power generating system, and a method of magnetizing a permanent magnet A permanent magnet electrical rotating machine having a permanent magnet rotor and a stator, wherein: a plurality of permanent magnets are disposed in a rotor iron core of the permanent magnet rotor along a periphery of the rotor i... | 08/09/2011 |
| 7969050 | External rotor and housing therefor A housing for an external rotor with a side wall; an end cover directly connected to the side wall; a cavity formed between the side wall and the end cover; a plurality of openings formed in the side wall; a plurality of wind wheels; a plurality of air inlets, each ... | 06/28/2011 |
| 7898128 | Forced cooling rotary electric machine The invention aims at providing a forced cooling rotary electric machine capable of bringing temperature distribution close to a designed temperature distribution and avoiding becoming a larger size, and employs a wedge formed with ventilation grooves and a wedge no... | 03/01/2011 |
| 7893577 | Rotor for an electrodynamic machine A rotor for an electrodynamic machine includes a laminated core having a plurality of lamination segments arranged in series in an axial direction, wherein the laminated core includes cooling ducts formed by duct spacers disposed between axially adjacent lamination ... | 02/22/2011 |
| 7893575 | Rotor with field coils in optimized flux space slots The depth from the open end of a rotor slot closest to a magnetic pole of a rotary core to a slot bottom or the bottom of a subslot provided as a coolant ventilation path on a rotor slot bottom is made less than the depth of slots at and after a second slot counted ... | 02/22/2011 |
| 7893576 | Generator coil cooling baffles Systems are disclosed that assist in cooling generator rotor coils. In one embodiment, the system includes a stator; a rotor positioned within the stator, the rotor having: a spindle; groups of coils disposed about the spindle, each of the groups of coils including ... | 02/22/2011 |
| 7816826 | Thermosyphon cooled superconductor A machine has a rotor, that can be rotated about an axis, with a superconductive winding that is coupled in a heat-conducting manner to a central coolant area of a fixed heat conducting body proturding into a hollow of the rotor via a winding carrier and a heat cont... | 10/19/2010 |
| 7812486 | Direct electrical drive The invention relates to a direct electrical drive (1) for a wheel set (30) of a vehicle, wherein the direct electrical drive (1) comprises a stator (7) and a rotor (3), with the rotor (3) being coupled mechanically with a w... | 10/12/2010 |
| 7777375 | Devices, systems, and methods for producing an electric motor Certain exemplary embodiments comprise an electric motor that comprises a stiff shaft. The electric motor can have an output rating that is greater than approximately 200 horsepower. The electric motor can have a ratio of a rotor core length to an outside stator dia... | 08/17/2010 |
| 7759829 | Industrial motor assembly comprising a vented rotor shaft Certain exemplary embodiments comprise a device and/or an electric motor comprising an elongated, substantially rigid rotor shaft, the rotor shaft defining a plurality of longitudinal flutes; and/or a method comprising: for an electrical motor, forming an elongated,... | 07/20/2010 |
| 7750515 | Industrial air core motor-generator A non-ventilated motor-generator includes a rotor supported for rotation on bearings inside a closed metal housing. The rotor is constructed of two spaced apart rotor sections having permanent magnets that drive magnetic flux across an air gap between the rotor sect... | 07/06/2010 |
| 7737586 | Rotating electric machine A rotating electric machine wherein sub slots serving as cooling fluid ducts in the axial direction are provided at the bottoms of the coil slots formed in the rotor, radial cooling fluid ducts are formed through the field coil of the rotor in the radial direction o... | 06/15/2010 |
| 7701097 | Fan, motor and impeller thereof An impeller, which is driven by a stator, includes a conducting shell, a hub and a plurality of blades. The conducting shell covers at least one side of the stator. The hub covers the conducting shell. At least one air gap is formed between the hub and the stator. A... | 04/20/2010 |
| 7696658 | Magnet generator A magnet generator including a bowl-shaped flywheel which is formed of a cylindrical portion and a bottom portion on one end side of the cylindrical portion, a plurality of magnets which are arranged on the inner peripheral surface of the cylindrical portion of the ... | 04/13/2010 |
| 7692342 | Outer rotor of motor for direct drive-type washing machine Objects of the present invention is to provide an outer rotor of a motor for a direct drive drum type washing machine, in which a structure of the outer rotor is improved, to resolve throbbing of the outer rotor at the time of high speed rotation, and consequential ... | 04/06/2010 |
| 7646119 | Electric machine with rotor cooling and corresponding cooling method The aim of the invention is to optimize cooling of a rotor using simple means. A rotor is provided, comprising rotor pressure rings (1) such that at least one of the two rotor pressure rings (1) is configured in order to enable targeted guiding of the ... | 01/12/2010 |
| 7598635 | Dynamo electric machine A rotor for a dynamo electric machine comprises a rotor body 12 defining a plurality of poles in the form of limbs 16 around which windings 18 are provided, and a wedge arrangement 20 spanning the space 42 between adjacent limbs | 10/06/2009 |
| 7589442 | Motor and washing machine with the same mounted therein Disclosed herein is a motor and a washing machine with the same mounted therein. The motor includes a rotor cup having cooling-holes and lower blades formed at the bottom part thereof. The cooling-holes and lower blades are arranged such that each of the cooling-hol... | 09/15/2009 |
| 7579725 | Liquid cooled rotor assembly A rotor assembly cooling system (100) and method of using same are provided. A portion of the rotor shaft (103) is hollow, the rotor shaft including an open end (107) and a closed end (105). A coolant feed tube (109) is rigidly att... | 08/25/2009 |
| 7514827 | Self-cooled rotor for an electrical machine A self-cooled rotor for an electrical machine being internally provided with a cooling channel to carrying cooling fluid. The machine includes a further channel for carrying cooling fluid in proximity to a magnetic field generating means for cooling it, the two pass... | 04/07/2009 |
| 7489057 | Liquid cooled rotor assembly A rotor assembly cooling system (100) and method of using same are provided. A portion of the rotor shaft (103) is hollow, the rotor shaft including an open end (107) and a closed end (105). A coolant feed tube (109) is rigidly att... | 02/10/2009 |
| 7476994 | High power generator with enhanced heat removal A high speed, high power generator has its main stator and main rotor configured to provide enhanced cooling capability. The generator includes a generator housing, a stator, a shaft, and a rotor. The stator is mounted within the generator housing. The shaft is rota... | 01/13/2009 |
