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6809452 |
Skeleton type brushless motor
A skeleton type brushless motor comprises: a rotor in which a rotational shaft is pressed and fixed; a stator including a first stator core and a second stator core in which rotor receiving parts...
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6806615 |
Core, rotating machine using the core and production method thereof
A core has an annular inner core portion, a rib-shaped core portion extending radially from the annular inner core portion and an outer peripheral core portion. Magnetic pole tooth portions are...
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6806614 |
Core with insulation member, and method of producing the same
A core provided with an insulating member, including the core having a plurality of slots, each slot formed between two teeth protruding from a yoke and having a side face and a bottom face that...
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6803693 |
Stator core containing iron-aluminum alloy laminations and method of using
An electrical machine stator core and method for reducing electromagnetic losses and the consequent heating of the core. The stator core makes use of laminations made from an iron-aluminum alloy at...
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6803692 |
Permanent magnet type electric motor
The permanent magnet type reluctance electric motor includes a stator including a stator iron core and having armature coils placed inside slots, and a rotor provided with a plurality of magnetic...
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6803691 |
Ring-shaped motor core
An electrical machine comprises a magnetically permeable ring-shaped core centered on an axis of rotation and having two axially-opposite sides. Coils are wound toroidally about the core and...
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6803694 |
Unitary amorphous metal component for an axial flux electric machine
A unitary amorphous metal magnetic component for an axial flux electric machine such as a motor or generator is formed from a spirally wound annular cylinder of ferromagnetic amorphous metal...
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6799362 |
Motor and method for manufacturing the same
A motor and a method for manufacturing thereof use a rotor having permanent magnets and stators. The highest revolving speed of a motor is adjusted by using end plates of different thickness. The...
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6794789 |
Miniature motor
The micromotor serves to drive an impeller ( 12 ) rotating in a pump housing ( 14 ). The excitation winding of the micromotor is surrounded by an enveloping flux return structure ( 18 ) of...
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6794786 |
Electric motor
In an electric motor comprising a rotor, a stator, a stator core that constitutes the stator, a core section that constitutes the stator core, a plurality of split core blocks which constitute the...
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6794839 |
Precision motor control with selective current waveform profiles in separate stator core segments
A control system is provided for a multiphase motor having a plurality of stator phase components, each stator phase component comprising a phase winding formed on a core element, and a permanent...
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6791225 |
Flywheel magneto generator
The invention relates to a flywheel magneto generator having a rotor assembly and a stator assembly. The rotor assembly includes a non-ferromagnetic flywheel and a plurality of magnetic poles that...
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6791222 |
Rotary electric motor having at least two axially air gaps separating stator and rotor segments
A motor has a rotor and a stator. The stator is made up of a plurality of separate electromagnet core segments disposed coaxially about an axis of rotation. The core segments are affixed, without...
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6791231 |
Two-pole motor's stator for a household fan
The invention relates to a two-pole motor's stator for a household fan having slots with tapered close end and greater width by enlarging the stator's middle hole (for accommodating a rotor with...
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6787958 |
Electrical machines
An electrical motor or generator comprises a rotor 79 without windings, a stator 78 having armature windings comprising at least two coils A 1 , A 2 having active portions positioned within...
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6787951 |
Rotary electric motor having controller and power supply integrated therein
A rotary electric motor is formed within a cylindrical rotor housing structure that surrounds an annular stator ring. The permanent magnet rotor is configured in an annular ring coaxial with, and...
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6784575 |
Air-cooled outer rotor type motor/generator contained within a crank pulley of an engine
A motor/generator housed in an annular space formed between an engine side wall and a crank pulley fixed to an end of a crank shaft includes a stator supported on the engine side wall and a rotor...
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6784588 |
Low core loss amorphous metal magnetic components for electric motors
A high efficiency electric motor has a generally polyhedrally shaped bulk amorphous metal magnetic component in which a plurality of layers of amorphous metal strips are laminated together...
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6781277 |
Micro-motor with low cogging torque
A micro-motor with low cogging torque. The micro-motor includes a stator, a rotor, first and second magnetically conductive assemblies, and a bobbin. The first and second magnetically conductive...
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6781274 |
Rotor for synchronous motor and method of manufacturing the same
A rotor of a synchronous motor and a method of manufacturing the same. The rotor of the synchronous motor comprises a main core, formed from a plurality of laminated thin iron sheets, the thin iron...
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6777836 |
Heat transfer enhancement at generator stator core space blocks
A ventilation pathway for a cooling gas to flow extends on a radial axis in a generator stator core. The ventilation pathway comprises at least two magnetic laminations and a plurality of space...
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6777850 |
Stator and stator core for a dynamoelectric machine and a method for manufacture thereof
A stator core is prepared into a cylindrical shape by abutting four arc-shaped laminated core divisions and welding an outer surface and an inner surface of the abutted portions. Each of the...
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6777852 |
Stator core of torque motor
A stator core of the invention is structured such that the stator core is provided with an arm portion for pressure inserting a coil portion, and pole tooth portions arranged in a columnar space...
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6777843 |
Resolver integrated type motor
A resolver-integrated motor has a radial irregular shape which is formed at an end on a non-load side of its motor shaft. This radial irregular shape is used as a resolver rotor. The radial...
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6777848 |
Laminated stator body for an electrical machine
a high-voltage generator, notches ( 3 ) leading radially inward are provided in each segmental lamination ( 1 ) on the radial outside of the laminated stator body and end in a relief opening. The...
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6777844 |
Brushless motor
A vacuum cleaner assembly includes a motor having a rotor and a stator for providing motive power to the assembly. The rotor and stator each include armatures having tips. In one aspect, the widths...
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6774529 |
Rotor body
The invention relates to a rotor body, especially for the rotor of the starter or the starter-generator of an internal combustion engine. Said rotor body is provided with a hub ( 4 ) that extends...
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6774524 |
Motor core and motor using the same
A motor generating cogging torque has one-quarter the cycle of basic cogging torque and an extremely small absolute value. First, in order to reduce the cycle of the cogging torque to one-half the...
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6774523 |
Electric motor
An electric motor, more particularly, a rotor structure of an electric motor comprises: a stator including a plurality of teeth and coil wound on the teeth to form rotary magnetic flux by applied...
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6774520 |
Thin inner rotor motor and disk device using the motor
An inner rotor motor includes a rotor which has a plurality of circumferentially arranged magnetic poles and a stator which is positioned outside a circumference of the rotor and has a stator core...
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6772503 |
Rotor assembly having bonded lamination stack
A rotor assembly includes a stack of laminations that are bonded together by a dielectric bonding agent. The laminations and the dielectric bonding agent have matching coefficients of thermal...
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6769167 |
Method of manufacturing a rotor for a synchronous reluctance motor
A rotor for a synchronous reluctance motor of flux barrier type and manufacturing method thereof constructs a rotor for a synchronous reluctance motor by forming a magnetic core steel plate of disc...
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6770989 |
Linear motor having an improved stator and shifter
A linear motor has a support portion 311 laterally bridged between a plurality of armatures 30 and a shifter side base portion 33 located on a shifter 3 side, for moving along a stator 2 ...
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6762531 |
Motor assembly having improved flux properties
A motor assembly having improved flux density includes a field assembly and an armature assembly rotatably received by the field assembly. The field assembly includes a plurality of like...
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6762519 |
Outer rotor structure for an ac fan
An outer rotor structure for an ac fan includes a plurality of annular pole plates used to stack on each other to form an outer rotor. Each of the pole plates includes an axial hole, a plurality of...
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6760965 |
Method for manufacturing an alternator
A method for manufacturing an alternator includes preparing a winding assembly formed by bending strands of wire so as to have straight portions which fit into slots, forming a base core by...
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6762529 |
Lamination features for stator grounding
A spindle motor incorporates a shaft having a known outer diameter and a stator having a known inner diameter which is slightly larger than the outer diameter of the shaft so that it may slip over...
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6762532 |
Stator assembly structure of a direct current brushless motor
A stator assembly structure of a direct current brushless motor includes a coil seat having a fitting hole for passage of the magnetic conducting tube. An upper pole plate and a lower pole plate...
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6762525 |
Cascaded rotary electric motors having axial and radial air gaps
A cascaded motor arrangement is configured with a plurality of rotor/stator sets that extend in an axial direction. A stator set contains a plurality of separate electromagnet core segments...
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6759777 |
Permanent magnet type electric rotating machine
A permanent magnetic type electric rotating machine includes: a stator having armature winding arranged in several slots formed in a stator core; and a rotor having permanent magnets held in...
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6759782 |
Pole piece assembly
A pole piece assembly ( 28 ) for an electric motor ( 20 ) formed of stacked interlocked lamina ( 46 ) that define a first set of stacked lamina ( 50 ) and a second set of stacked lamina ( 52 )....
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6756719 |
Electrical generator with separated coil and set of magnets
An electrical generator includes a coil, a coil seat and a set of permanent magnets. The coil and the set of permanent magnets are separated from each other. The coil is mounted in the coil seat so...
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6753637 |
Exciter rotor assembly
A rotor and a method of constructing a rotor are disclosed. The rotor includes a hub that is capable of being supported by a shaft that extends along an axis, a plurality of laminations, and a...
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6753633 |
Construction of an electrical machine with individual pole windings
An electrical machine with a single-pole winding substantially built from bodies, whereby at least one of said bodies is structured from a number of segments at least corresponding with the number...
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6745458 |
Laminated magnetic core and method for making
A method of manufacturing an elongate stack of interlocked laminae in a die assembly. The method includes the steps of stamping a first lamina having generally opposed first and second edges in the...
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6745456 |
Apparatus and method of making a rotor core with elimination of outer periphery machining
An apparatus and an associated method are utilized to make a rotor core. The apparatus includes a support for supporting a lamina stack that has an axis extending along the stack. The apparatus...
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6742238 |
Flare tooth stator for an AC generator
A stator core extends along a longitudinal axis and includes a yoke, and a plurality of radially-inwardly projecting teeth separated by intervening slots. A radially innermost portion of each tooth...
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6744171 |
Rotating electric machine with sloped tooth surfaces for cogging torque reduction
A stator tooth design for a stator core of a permanent magnet motor. The tooth surface comprises a plurality of surface segments, wherein each surface segment of the plurality of surface segments...
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6744172 |
Heat-dissipating fan
A heat-dissipating fan comprises a rotor and a stator. The rotor includes a ring magnetic mounted to an outer periphery thereof. The stator includes a core. A plurality of poles integrally extend...
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6741007 |
Permanent magnet motor assembly having a device and method of reducing parasitic losses
A permanent magnet motor assembly for use in a flywheel is disclosed, including a rotor, a stator, and a coil positioned in the stator. One or more magnets is attached to the rotor such that...
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