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7626306 |
Laminated core structure of motor
The laminated core structure of a motor includes a stator iron core formed by laminating a plurality of stator iron core thin sheets in which a plurality of magnetic poles are provided at fixed...
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7615895 |
Outer rotor type motor for drum type washing machine and method for fabricating the same
Direct coupling type motor for drum type washing machine having a stator which can reduce material required for fabrication, and a weight after fabrication, simplify a fabrication process, and can...
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7608968 |
Dust core and method of manufacturing the same
A stator core includes first and second annular dust core pieces. Each of the first and second annular dust core pieces has a plurality of arcuate dust core pieces each integrally having a yoke...
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7608969 |
Stator for rotary electric machine
A stator for a rotary electric machine, including a plurality of stator cores arranged in a circumferentially spaced relation about a central axis of the stator, and a molded resin filled between...
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7595578 |
Motor, rotary electric machine and its stator, and method for manufacturing the stator
A laminated core segment 30 into which a stator core is split has a core main body 31 that extends in an arc shape. On one end section of the core main body 31 there is formed a connecting...
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7583001 |
Electric motor design for in hub motors
An electric motor design for hub motors comprises a stator assembly, having an axle, a stator plate sector holder, fixed on the axle, at least one stator sector assembly, mounted on the stator...
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7567009 |
Stator arrangement for an electric machine and a method for manufacturing the stator arrangement
A stator arrangement for an electric machine having a stator body which has a back yoke ring and a number of stator teeth that project in a radial direction from the back yoke ring, wherein at...
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7560846 |
Flux barrier type synchronous reluctance motor and rotor thereof
A rotor of a flux barrier type synchronous reluctance motor comprises: a rotation shaft; a rotor core formed as a plurality of steel plates are laminated to one another, the steel plate having a...
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7554241 |
Three-gapped motor with outer rotor and stationary shaft
A motor with three gaps produces higher torque than existing one or two gap motors. The motor uses both one radial and two axial gaps to produce torque. A single stator is provided with an...
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7550884 |
Brushless motor
A cutout portion is formed at an outer peripheral side of a stator placing portion provided in a bearing bush for placing a core back portion of a stator. A connecting wire portion of a coil of the...
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7546674 |
Method of rotor assembly without the hub
A method of assembling a rotor assembly is provided, without the use of a rotor steel hub. The method comprises forming first, second and third lamination stacks by stacking individual rotor...
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7541711 |
Electric motor, stator of electric motor, and manufacturing method for the stator
A stator of an electric motor includes teeth, coils each wound about one of the teeth, and a yoke. Each tooth includes a tooth main body and a tooth reinforcing portion, which is integrally molded...
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7538467 |
Magnetic powder metal composite core for electrical machines
A compacted magnetic powder metal component assembly for use in an electrical machine is provided. Each component assembly has a top section and a bottom section. Each top section is comprised of...
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7538468 |
Electric motor and electric compressor with improved housing and stator
A housing of an electric motor includes an inner circumferential surface, which includes recesses arranged along the circumferential direction. On an outer circumferential surface of a stator core...
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7535134 |
Spindle motor, and recording and reproducing apparatus equipped with the same
With a spindle motor 20 , a stator core 8 comprises a plurality of salient pole components 51 that are formed in a radial shape, are wound with a stator coil 9 , and are disposed at a uniform...
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7530156 |
Lamination cooling system formation method
An electric motor, transformer or inductor having a cooling system. A stack of laminations have apertures at least partially coincident with apertures of adjacent laminations. The apertures define...
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7520148 |
Drum type washing machine
In one aspect, a drum type washing machine includes, among other things, a tub supporter of metal between a wall of a tub and a stator, where the stator includes an annular helical type core having...
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7508109 |
Commutator motor
A commutator motor includes a stator and a rotor, and the stator includes a stator yoke and a field magnet. The field magnet is fixed onto the inner peripheral surface of the substantially...
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7489062 |
Synchronous reluctance machine with a novel rotor topology
A synchronous reluctance machine that has a stator and a rotor shaft operationally disposed within the confines of the stator. Laminations are axially stacked to form boat shaped segments. A...
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7485997 |
System and method for securing a rotor to a motor drive shaft using cam fasteners
A rotor assembly for mounting a rotor to a motor shaft having a rotor with a centrally positioned central bore, the diameter of which is slightly larger than a diameter of the motor shaft, a first...
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7479724 |
Stator structure
A stator structure includes at least one stator part having a single rolled steel sheet to serve as a waist post with a gap. A first stator part includes a first engaging portion. A second stator...
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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....
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7471025 |
Segmented stator with improved handling and winding characteristics
A stator assembly has discrete stacks of laminations. A plurality of nonmagnetic containment structures define pockets. The stacks are at least partially received in the pockets and coupled to one...
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7462969 |
Electromagnetic actuator with external coils
An electromagnetic actuator with a smaller size and an increased strength is provided. In the electromagnetic actuator, a first arm portion and a second arm portion that connect the magnetic poles...
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7459826 |
Laminated body of motor and manufacturing method thereof
A laminated body of a motor includes: a yoke spirally laminated to form a hollow cylindrical shape; a plurality of teeth protruding from one side edge of the yoke disposed along a longitudinal...
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7456540 |
Motor and recording disk drive device provided with the same
In a spindle motor, a core includes a plurality of core plates, which are laminated one on another. The core is constituted by laminating two cores, that is, a first core and a second core, which...
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7439646 |
High power generator with enhanced stator heat removal
A high speed, high power generator has its main stator configured with one or more reduced-diameter sections. The generator includes a generator housing, a main rotor, and a main stator. The...
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7420310 |
Brushless motor
Of two bearings supporting a rotor of a circuit-integrated type core-equipped brushless motor, a part of an outer periphery of the bearing, which is disposed at a position near a stator core, is...
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7414348 |
Armature core of rotating electric machine
A rotating electric machine armature core is configured by combining such a number of magnetic tooth sections that corresponds to the number of magnetic poles, each of the magnetic tooth sections...
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7408280 |
Rotor of rotary electric machine
A Lundell type rotor core with a pair of side cores and a magnetic-pole cylindrical portion has a structure in which the magnetic-pole cylindrical portion is mated between both the side cores (also...
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7397163 |
Power generator stator assembly, a stator core module assembly, and a process for assembling a stator core module assembly within a stator frame
A stator core module assembly ( 20 ) is provided which is adapted to be mounted to at least one structural element ( 16, 18 ) coupled to a stator frame ( 10 ). The stator core module assembly...
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7397162 |
Method and apparatus for checking stator core alignment
In one embodiment the present invention provides for a method for checking the alignment of a stator core that comprises placing a laser source 14 and a target 18 a given distance apart on a...
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7388313 |
Armature for a direct current motor
An armature for a direct current motor, in particular for a permanent-magnet-excited DC motor, has an armature body, with armature teeth joined in one piece together via a short-circuit ring and...
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7378774 |
Laminated core of rotary electric machine
A laminated core having a first number of magnetic poles, the first number being a natural number divided by two, of a rotary electric machine, includes a plurality of arc-shaped unit cores each...
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7375450 |
Hub unit for use in electrically movable wheels and vehicle comprising the hub unit
A hub unit for use in electrically assisted bicycles has an improved effect to radiate heat from a stator. A hub ( 7 ) has inner teeth ( 66 a ) meshable with planetary gears ( 65 ) and a fixing...
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7365469 |
Laminated armature core for an electric motor
In an armature packet ( 1 ) for an electric motor, having a plurality of armature laminations ( 2, 3 ), in each of which a plurality of winding slots ( 4 ) for receiving an armature winding ( 5 )...
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7362027 |
Electric machine with a laminated rotor core
An electric machine includes a shaft and a rotor core mounted onto the shaft and formed of a plurality of stacked laminations. The rotor core has opposite end surfaces for attachment of a plate in...
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7358637 |
Method of compressing lamination stacks for permanent magnet rotor
The present invention is a method of compressing lamination stacks for a permanent magnet rotor. The method includes the steps of providing a plurality of stages of lamination stacks and magnet...
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7353586 |
Method of horizontally stacking a stator core within a stator frame
The present invention provides a method for the horizontal stacking of laminations 10 and donuts to form a stator core. A stator generator frame 2 has multiple keybars 6 that run the axial...
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7352102 |
Motor
Bearings for rotatably supporting a rotor are disposed on an inner side of a hollow cylindrical portion of the rotor which is disposed in a rotating magnetic field formed by a group of stator...
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7352101 |
Skew shape variable laminated iron core and method of manufacturing the same
In a laminated iron core in which plural iron core pieces are laminated through caulking projections and caulking holes in which the caulking projections are fitted, and in the iron core pieces...
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7348707 |
Electromechanical device having three-dimensional stator laminations
In certain embodiments, an electromechanical device includes a rotor having a rotational axis, and a stator disposed about the rotor. The stator may include a circumferentially laminated section...
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7340822 |
Insulator and manufacturing method thereof, and stator for electric rotating machine
A stator for a motor includes a stator core, an insulator, and coils. The stator core includes an annular portion and teeth, which extend radially from the annular portion. The stator core is...
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7332845 |
Spoke permanent magnet rotor
A rotor includes a shalt that defines a rotor axis, a first end portion coupled to the shaft, and a pole piece that defines an enclosed aperture therethrough. A second end portion is positioned to...
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7315104 |
Iron core and method of manufacturing the same and apparatus for manufacturing the same
An apparatus for manufacturing an iron core comprising: a plate thickness measurement unit for measuring a thickness of the strip as an intermediate product of the iron core; an inlet guide for...
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7304559 |
Rotary transformer for transmission of electrical energy or information
A device for efficient transmission of electrical energy and/or information is built in the manner of a rotary transformer. The cores of this device are made of ferromagnetic rings of a U-shaped...
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7298138 |
Stator structure for a rotation detector
In a stator structure for a rotation detector according to the present invention, a stator body is formed by rotating a plurality of annular stator pieces by a predetermined angle for each stator...
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7298064 |
Electric motor and apparatus for manufacturing electric motor
A motor capable of reducing cogging torque depending on teeth of a stator, and a motor manufacturing apparatus for manufacturing this motor. The angles of rolling directions of cores stacked are...
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7294942 |
Outer rotor type motor for drum type washing machine and method for fabricating the same
Direct coupling type motor for drum type washing machine having a stator which can reduce material required for fabrication, and a weight after fabrication, simplify a fabrication process, and can...
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7282830 |
Stator for an electrical machine
A stator for an electrical machine is proposed that has a stator winding ( 45 ) that is held by a stator core ( 10 ) that is formed into an annular shape. The stator core ( 10 ) has grooves ( 14 )...
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