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6995484 |
Coating compositions for electronic components and other metal surfaces, and methods for making and using the compositions
A method is disclosed for providing inorganic and/or organic coating compositions onto rotor cores to eliminate soldering during aluminum injection. These coatings can also be applied upon electric...
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6992412 |
Rotary electric machine having laminated armature core
An armature composed of a shaft and an armature core is rotatably supported in a housing of a rotary electric machine. The shaft is forcibly inserted into a center hole of the armature core formed...
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6992413 |
Bicycle hub dynamo with a freewheel
A bicycle hub dynamo comprises a hub spindle adapted to be mounted to a frame of the bicycle; a hub body disposed around the hub spindle, wherein the hub body has a pair of axially spaced hub...
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6992418 |
Stator component for an inner rotor DC motor
Stator component for an inner rotor motor which has a ring-shaped stator coil flux guide and a number of pole shoes extending inwardly from the central, inner opening of the stator coil flux guide,...
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6989615 |
Stepping motor
A stepping motor includes a housing, a rotor and a stator received in the housing. The stator includes a yoke, which includes a frame portion surrounding the rotor and a plurality of projections...
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6984914 |
Motor having characteristic structure in armature and disc apparatus
The invention provides a motor which can reduce a generation of a cogging, has a thin size, and can generate a strong torque. In a motor having an armature including a back yoke formed in a...
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6984909 |
Motor
In a permanent magnet-embedded, concentrated winding motor, plurality of stator teeth are divided into, for example, three groups that include a plurality of adjacent stator teeth having coils...
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6984913 |
Lamination stack with center interlock
An interlocked stack of laminations for rotors wherein each lamination includes a centrally located, circular indentation. The indentation provides corresponding projections and depressions in the...
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6979930 |
Stator for an automotive alternator
A stator core is constructed by laminating and integrating first and second core divisions with the press punch directions thereof facing each other, each core division being constructed by winding...
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6979931 |
Spindle motor having spindle motor stator with laminate layers for increased head stack assembly access
A spindle motor for use in a disk drive having a rotatable head stack assembly. The spindle motor has a spindle motor hub. The spindle motor further has a magnet radially attached about the spindle...
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6977460 |
Spacer for axial spacing enclosure rings and shields in an electrical machine
Grooves are formed in the pole faces of a multi-pole rotor body. Spacers are provided for insertion into the grooves and have radial outward projections for engaging between shield segments and...
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6977457 |
Core having axially assembled core sub-parts and dynamo-electric machine member having the same
Teeth of a first core sub-part and teeth of a second core sub-part are alternately arranged in a circumferential direction. Each tooth has a tooth main body, which may include two tilted portions...
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6975057 |
Rotary electric machine having a stator made up of sectors assembled together
The invention relates to a rotary electric machine including a stator, powered by a polyphase current, having a magnetic circuit with teeth forming intervening slots for receiving electrical...
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6975050 |
Brushless DC motor
A system and method for reducing the cost of producing a brushless DC motor is presented. The brushless DC motor provides higher power density and efficiency with an increased tool run time. The...
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6967424 |
Rotor assembly and stator assembly for an electrical machine
The present invention relates to a rotor assembly for an electrical machine, comprising: a rotor body of generally cylindrical shape having a substantially cylindrical surface configured for facing...
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6967421 |
Core for motor, motor furnished to the core and method for manufacturing the motor
A motor includes a core having a common connection section formed in a ring shape, a plurality of salient pole sections that protrude and extend radially from the common connection section, each of...
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6967425 |
Multi-functional electric stepper motor assembly having increased motor torque
An electric stepper motor having increased motor torque includes a thru-hole, a rotor and a stator. The thru-hole allows use with a chamber and provides transport of hardware and elements into the...
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6960861 |
Combined stator core for an electric rotary machine
A yoke includes a plurality of recessed portions. A teeth block includes a plurality of protruding portions being coupled or fitted into the recessed portions of the yoke. The recessed portions and...
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6960860 |
Amorphous metal stator for a radial-flux electric motor
An amorphous metal stator for a high efficiency radial-flux electric motor has a plurality of segments, each of which includes a plurality of layers of amorphous metal strips. The plural segments...
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6958556 |
Structure of rotors in stepping motors
A stepping motor having a rotor that includes a magnetic component whose circumferential part is magnetized in multipole along the circumferential surface thereof, the stepping motor being capable...
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6958562 |
Motor stator and heat sink system
A plurality of similarly configured plates have an essentially circular exterior peripheral ring and an essentially circular interior opening with a plurality of radial legs extending inwardly from...
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6956307 |
Soft magnetic composite powder metal cores
A stator core assembly for use in an electrical machine is provided. The stator core assembly includes a plurality of core components. Each core component forms an arcuate section of the stator...
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6954010 |
Lamination cooling system
An electric motor, transformer or inductor having a lamination cooling system including a stack of laminations, each defining a plurality of apertures at least partially coincident with apertures...
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6952064 |
Motor
It is intended to suppress the vibration and noise during operation of a concentrated winding electric motor and to provide an electric motor with high efficiency, low vibration and low noise. A...
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6949858 |
Insulated code stud for rotor and stator laminations
An insulated core stud for use in the core structure of at least one of a stator and a rotor of a dynamoelectric machine is adapted to pass through holes contained in laminations of the core...
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6946760 |
Brushless permanent magnet motor with high power density, low cogging and low vibration
A brushless permanent magnet electric machine includes a stator assembly having a stator core that defines (12×n) slots and stator teeth having a generally “T”-shaped cross section. Winding...
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6943479 |
Stator for an electrical rotating machine
An electrical rotating machine in which the laminated magnetic circuit of an external stator includes a stack of yokes each made from a magnetic metal sheet and disposed substantially parallel to a...
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6938324 |
Method of manufacturing a stator core
A motor stator core for achieving improved magnetizing feature in lower magnetic fields and reduced iron loss, and improving motor power. The stator core fabriated out of non-oriented electrical...
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6940242 |
Motor control system for dynamically changing motor energization current waveform profiles
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 rotor. A...
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6936949 |
Rotation angle detecting apparatus
A rotation angle detector includes a stator core ( 2 ) comprised of a plurality of core sheets ( 4 ) each having plural core members ( 4 a ) each including a tooth and a yoke portion ( 5 a , . . ....
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6933649 |
Method of installation of a laminated stator core stack in the motor casing
A stator core stack formed by laminating a plurality of straight cores having a core back, a tooth, and a linking part for linking the core backs. In the stator core stack, the linking portion is...
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6933646 |
Electric rotating machine and electromagnetic machine and apparatus
To simplify a winding structure of a stator and a rotor of an alternating current electric machine, in a winding a magnetic field formation of a magnetic pole portion is formed with a bobbin...
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6930427 |
Electric apparatus having a stator with insulated end laminations within the central opening of end plates
A technique is provided for manufacturing a stator of an electrical machine, such as a motor. The stator is formed by using thin end plates or laminations that are attached to each other by rods...
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6930416 |
Compliant stator
A compliant stator motor is disclosed. In one implementation, the motor ( 200 ) includes a rotor ( 210 ), a stator ( 220 ) having main and auxiliary windings, an outer motor case ( 230 ), and a...
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6930422 |
Multi-stage motor
An electrical machine includes first and second magnetically permeable parallel cores. Each core is elongated to thereby define a lengthwise direction and first and second core profiles transverse...
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6930417 |
A.C. motor-inverter integrated drive unit
An a.c. motor-inverter integrated drive unit comprises an a.c. motor powered by an alternating current. The motor includes a rotor rotatable about a rotation axis, a plurality of stator cores...
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6930428 |
Subassembly of an electrical machine and electrical machine with one such subassembly
The invention relates to an assembly of an electric machine with at least two abutting circular ring or circular disk-shaped sheet metal layers, wherein each of the sheet metal layers is formed by...
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6927525 |
Unit core of motor with a yoke comprising an elongated end
Disclosed are a unit core and a method manufacturing the same. The unit core is opposite to the neighboring unit core on an electric steel plate in orientation, and its unit yoke has an elongated...
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6927524 |
Rotary electric motor having separate control modules for respective stator electromagnets
A rotary brushless electric motor is formed within a cylindrical rotor housing structure that surrounds an annular stator ring. The stator is formed of a plurality of individual power modules and...
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6924579 |
Electrical machine
A motor/alternator is formed by a single toroidal magnet and flux conductors which, in combination with flux switches, create an alternating magnetic circuit around a power coil. The...
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6924575 |
Electric machine
An electric machine includes a stator having a laminated core comprising a stack of sheet metal stampings having a central opening, a plurality of undercut anchoring elements around the central...
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6922002 |
Motor
The compact motor is capable of improving characteristics of torque. In the motor, a stator core includes a main core and a sub-core. The main core is constituted by piling a plurality of first...
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6919665 |
Stator core, an electric motor in which it is utilized, and method of manufacturing a stator core
In a stator core is formed by laminated strip-shaped straight cores including a plurality of teeth portions, bent portions being provided with V-shaped notches, which define V-shaped gaps opened to...
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6919700 |
Adaptive control of motor stator current waveform profiles
Subject to user or system selection, one of the motor control schemes is accessed from the memory by a controller for implementation. The controller generates control signals that are applied to...
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6917134 |
Vehicle use ac generator
To reduce noise, there is provided an alternator for motor vehicles having a rotor and a stator which is mounted between a pair of brackets. In the alternator a stator core forming the stator is...
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6911760 |
Electrical machine
An electric motor for electric hand power tools has a housing, a stator received in the housing and having a stator body composed of a plurality of axially abutting lamellas, at least one of the...
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6911757 |
Ring stator motor device
An integrated drive motor assembly is described where the functional components of a powered device are an integral part of the motor. The assembly comprises a brushless, direct current drive motor...
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6909211 |
Rotary electric machine with forced ventilation
The present invention provides an electric machine with forced ventilation, the machine comprising:
a rotor capable of rotating about an axis of rotation; a stator within which the rotor can...
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6909216 |
Motor generator
A permanent magnet embedded type concentrated winding motor generator, wherein of the mechanically and electrically independent first and second winding groups ( 4, 5 ), the plurality of first...
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6906448 |
Synchronous inductance motor, a manufacturing method of the synchronous inductance motor, and a compressor
A synchronous inductance motor provided in a rotor includes at least a pair of slit portions forming a two-pole magnetic polar projection having an easy-to-pass direction of the magnetic flux,...
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