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| Number | Title | Issue Date |
| 8169120 | Stator for AC motor A stator of an alternating current (AC) motor is disclosed. The stator includes a stator core having a divided structure including and an outer stator core fitted around the inner stator core while being connected to an inner circumference of the inner stator core. ... | 05/01/2012 |
| 8169119 | Electric machine having slot insulation with flange arrangement An electric machine having a rotor and a stator that encloses the rotor. The stator is closed at its end faces by flanges. A slot insulation is applied in an axial direction to the stator and has means of centering the rotor and/or the flanges with respect to the st... | 05/01/2012 |
| 8125115 | End turn phase insulator with a lead wire restraining tab and method of restraining lead wires on dynamoelectric devices A stator comprises a core, a plurality of wire coils, an end turn phase insulator, and at least one lead wire. The wire coils are wound through the slots of the stator and form end turns as they wind from slot to slot. The end turn phase insulator comprises an end t... | 02/28/2012 |
| 8097996 | Thermally conductive ground wall insulation for a stator bar A method of manufacturing a stator bar in large dynamoelectric machines, with the bar insulation made of solid materials with high thermal conductivity and high dielectric strength. In the present invention, the bar insulation is provided by thermally conductive she... | 01/17/2012 |
| 8076818 | Armature and electric motor having the same Winding guide portions of an insulator are received in slots, respectively, of a core. Each of windings is electrically insulated from the core by a winding guide wall of a corresponding one of the winding guide portions in each of corresponding two of slots of the ... | 12/13/2011 |
| 8076819 | Rotary machine stator According to one embodiment, a rotary machine stator includes a cylindrical stator core, an insulating film, and a ring-shaped insulator. The stator core includes a slot and a slot opening. The insulating film is formed cylindrical to be in close contact with the in... | 12/13/2011 |
| 8035269 | Electric machine An electric machine having a rotor and a stator that encloses the rotor, and having a first flange arrangement on at least one end face of the stator, wherein the first flange arrangement has a first flange component that has a connecting surface which adjoins the f... | 10/11/2011 |
| 8035268 | Insulating bobbin for stator of rotary machine An insulating bobbin for disposition between a stator core and a stator winding of a stator of a rotating machine, the stator winding being wound around the stator core by way of the insulating bobbin, the insulating bobbin comprising a coil end section at which an ... | 10/11/2011 |
| 7982355 | Interphase insulating member and rotating electric machine An interphase insulating member allowing reduction in size of a rotating electric machine is provided. The interphase insulating member includes a flat portion interposed between and insulating neighboring two phases of coil ends, and a three-dimensional portion pro... | 07/19/2011 |
| 7952251 | Systems and methods for shielding an electric machine A method for reducing leakage currents in an electric machine is described. The method includes positioning a plurality of leakage current shields between windings and teeth of a stator, and coupling at least one of the plurality of leakage current shields to a refe... | 05/31/2011 |
| 7944110 | Stator in rotating electric machine A method of manufacturing a stator in a rotating electric machine. In this method, each slot has a slot peripheral wall and a slot opening, covered with an insulation coating made of an electrical insulation material. The slot peripheral wall SW has a slot bottom wa... | 05/17/2011 |
| 7923887 | Brushless motor Disclosed herein is a brushless motor that is simply constructed based on a vernier type motor to achieve high torque without the increase in size and complication thereof. The brushless motor includes a rotor having magnetized surfaces alternately magnetized as N a... | 04/12/2011 |
| 7880360 | Stator assembly A stator assembly is provided and includes a laminated core and a one-part insulator having cover walls for covering edges of the laminated core, wherein first projections and a second projection both having a height smaller than the difference between the height of... | 02/01/2011 |
| 7851966 | Stator for electric machine with improved efficiency and thermal performance A stator for an electric machine, having compacted and bonded windings and a ferromagnetic core including an active element and a cooling element. The compacted and bonded windings are inserted in slots between teeth in the active element, and the cooling element ma... | 12/14/2010 |
| 7825563 | Insulator for electric rotating machine In an insulator to be inserted into each slot to be attached to adjacent teeth formed at a rotor or a stator of an electric rotating machine, the insulator is composed of insulator segments that are made divisible in a longitudinal direction parallel to a rotational... | 11/02/2010 |
| 7804218 | Rotating electrical machine winding, rotating electrical machine, and semiconductive insulating component used therein When a rotating electrical machine winding is inserted into a slot with a protective insulation intervening between them, a semiconductive insulating layer is lap-wound between an interlayer insulating layer of the rotating electrical machine winding and the protect... | 09/28/2010 |
| 7696663 | Rotor for a forced-air-cooled electric motor A rotor (2) for a forced-air-cooled electric motor, in particular a universal motor, especially for use with electrical power tools, has a laminated armature (6) incorporating longitudinal slots (8) and with wire windings of a coil (10) p... | 04/13/2010 |
| 7687964 | Electric motor having a field assembly with slot insulation An electric motor has a field assembly, such as a stator, for a dynamoelectric machine has field coils that are wound to a net shape. Lead wires are brought out from the ends of each field coil. The field coils are insulated with insulating sleeves or insulating slo... | 03/30/2010 |
| 7649296 | Stator having an interphase insulator A stator includes a first through a third windings, and a first and a second interphase insulators. The first interphase insulator has a first pair of strip-shaped insulating sheets and a first connecting portion. End portions of the insulating sheets are connected ... | 01/19/2010 |
| 7649295 | Insulation structure of rotary electrical machinery An insulation structure of rotary electrical machinery which electrically insulates teeth of a stator from a winding wound on the teeth includes: an insulator made from hard insulation material, disposed on both axial ends of the teeth, and having a side wall dispos... | 01/19/2010 |
| 7489061 | Stator for an inner rotor type motor and a method of manufacturing the same A stator for an inner rotor type motor includes a stator core 1, insulating members 10 and winding wire 3, 4. The stator core 1 includes: four divisional core elements 6 each integrally formed by setting up one tooth 2 to on... | 02/10/2009 |
| 7482725 | System and method for direct liquid cooling of electric machines A system is provided for cooling a stator coil of a rotating machine. In one embodiment, and by way of example only, the system includes a stator core, a radial core opening, and a sleeve. The stator core has an axially extending slot formed therein, an outer circum... | 01/27/2009 |
| 7373711 | Motor armature manufacturing method An insulator covering the teeth (31) of an armature (3) in an inner-rotor motor is composed of a tooth insulator (321), outer-side insulator (322), upper-end insulator (323), and lower-end insulator (324). The tooth insulato... | 05/20/2008 |
| 7372184 | Stator of motor A stator of a motor having various shapes and capable of minimizing the manufacturing costs. At least teeth are manufactured by the iron powder metallurgy method. In order to obtain the overhang effect, the height of a tip of each tooth is lower than the height of a... | 05/13/2008 |
| 7367106 | Method of assembling a dynamo-electric machine component Stator designs have wide-mouth slots between adjacent poles. Wire coils with high slot fill conductivity are formed around the poles. In some designs, the wire coils are wave wound around the poles. Thick bar conductors can be used for making the wire coils. The wir... | 05/06/2008 |
| 7355316 | Electrical tool In the portable electrical circular saw (electrical tool) in which a commutator motor (permanent magnet motor) is mounted in a motor case (housing) which is integrally formed in a tube shape, the commutator motor includes a stator fixed to an inner circumferential s... | 04/08/2008 |
| 7352098 | Insulator An insulator includes a main body portion for axially covering one side face of a core that includes a plurality of teeth portions extending in a radial direction, and a plurality of extending portions extending from the main body portion in an axis direction of the... | 04/01/2008 |
| 7340820 | Machine stator fabrication method A machine stator is fabricated by positioning pre-wound stator windings with respect to a laminated stator yoke and directly molding composite tooth tips into contact with respective teeth of the laminated stator yoke, or by positioning pre-wound stator windings aro... | 03/11/2008 |
| 7342335 | Magnetoelectric generator and method for manufacture thereof A magnetoelectric generator includes: a generating coil that is constituted by: a generating coil main body in which a conducting wire is wound onto respective teeth of a stator core; and an output wire that is led axially outward from the generating coil main body;... | 03/11/2008 |
| 7342338 | Permanent magnet electric motor with reduced cogging torque A permanent magnet electric motor 10 comprises a rotor 30 provided with two stages of permanent magnets in the axial direction on an outer circumferential face of a rotor iron core, and having a shaft shifted by a stage skew angle θr in electrical ang... | 03/11/2008 |
| 7342344 | Stator of outer rotor type motor for drum type washing machine The present invention provides an outer rotor type motor for a drum type washing machine to reduce material and weight for fabrication, simplify fabrication process, provide stable assembly of a stator to a fixing side, such as a tub or a bearing housing, prevent un... | 03/11/2008 |
| 7329973 | Rotary electric machine The present invention provides a rotary electric machine, of which the occupied volume can be reduced and which allows a space in an electric apparatus equipped therewith to be utilized effectively. A slot insulator 15 is integrally formed with a holder mount... | 02/12/2008 |
| 7327063 | Rotary electric machine for vehicles A rotary electric machine, such as a vehicular AC generator, including a rotor rotatably driven; and a stator having a stator iron core disposed to face the rotor and stator windings mounted at the stator iron core, the stator windings being composed of a plurality ... | 02/05/2008 |
| 7309939 | Current limiting means for a generator The invention provides means of limiting maximum current conducted through windings of an electric machine having a rotor and a stator. By encouraging an appropriate leakage flux around a winding, a leak impedance can be achieved which may be used, according to the ... | 12/18/2007 |
| 7302750 | Method of manufacturing armature of rotary electric machine An armature of a rotary electric machine composed of an armature core, an armature winding and a shaft is manufactured in the following manner. A conductor bar including plural conductors connected in line is formed, and each conductor is cut out from the conductor ... | 12/04/2007 |
| 7294944 | Brushless motor A compact, highly accurate and inexpensive brushless motor is disclosed. A bearing is fixed to the inner periphery of a cylindrical portion of a housing, and a shaft is rotatably inserted through the bearing to cover the housing. A yoke arranged at the forward end o... | 11/13/2007 |
| 7268457 | Insulator, armature and rotary electric machine The present invention relates to an insulator to be disposed in an armature core having a plurality of radially-formed salient poles. The insulator comprises a winding aligning portion having an approximately V shape (forming an angle of 60 degrees) and getting narr... | 09/11/2007 |
| 7268293 | Surface coating of lapped insulation tape An electrically insulated object 13 with a heat conduit at the interface between the layers of insulating tape 16. The tape 16 has been, surface coated with a high thermal conductivity (HTC) material, so that the interface between the layers of ... | 09/11/2007 |
| 7265466 | Electrical motor and fluid pump using the same An electrical motor includes a commutator attached to one side of an armature in an axial direction, and a cover structure member attached to the other side of the armature. The cover structure member includes a cover and plural terminals protruding from an outer pe... | 09/04/2007 |
| 7262538 | Concentrated winding stator coil for an electric rotary machine A tooth coil of a concentrated winding stator includes a first layer coil arranged by successively winding a flat type wire around a tooth in a direction advancing from a proximal end portion to a distal end portion of the tooth and a second layer coil arranged by s... | 08/28/2007 |
