|
Match
|
Document |
Document Title |
|
|
7633191 |
Multiphase step motor
The multiphase step motor is capable of reducing vibrations of a rotor and torque ripples in spite of switching current flowing through stator coils. Stator units are divided into 2n (n is an...
|
|
|
7608972 |
Claw-pole motor having smaller intervals between induction poles of stator rings at both ends
A claw-pole motor includes a rotor having permanent magnets; and a stator having stator rings assigned to three phases, which are coaxially stacked along the same axis. Winding attachment portions...
|
|
|
7605517 |
Claw pole rotating electric machine
A claw pole type rotating electric machine includes first and second claw cores which are disposed on a ring shaped ring yoke portion and a plurality of claw magnetic poles which extend in the...
|
|
|
7598633 |
AC motor designed to ensure high efficiency in operation
An ac motor is provided which includes a plurality of looped windings each of which extends in a circumferential direction of a stator. The stator is equipped with N stator pole groups made up of...
|
|
|
7592725 |
Motor and manufacturing method therefor
A motor includes a motor case having an opening part and a stator core disposed in an inside of the motor case. The motor case may include a bottom face part, sidewall parts extended on the opening...
|
|
|
7579742 |
High-efficiency parallel-pole molded-magnetic flux channels transverse wound motor-dynamo
A motor/dynamo including a mounting shaft having a hollow channel and a bearing attached to each end, a non-rotating cylindrical hub having a hollow core for the mounting shaft, single or plural...
|
|
|
7562590 |
Torque detecting device and manufacturing method of yoke assembly
A yoke assembly is constructed by retaining integrally a yoke ring having positioning holes aligned with pole claws arranged equally on the inner circumference and a yoke ring having positioning...
|
|
|
7564151 |
Linear actuator having mechanism for stopping linear movement of output shaft without touching rotor
A stopper member is included in a linear actuator comprising a stator assembly, a rotor assembly, an output shaft, and a stopper pin which is fixedly disposed at a frontward portion of the output...
|
|
|
7528521 |
Rotary electric machine and electric wheelchair mounted with rotary electric machine
A rotary electric machine comprises a stator including a plurality of teeth which are wound up by coils and a stator yoke core connecting the respective teeth, and a rotor provided with magnets...
|
|
|
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...
|
|
|
7508108 |
AC motor
A brushless AC motor has a rotor, N stator pole group, and plural loop-configuration stator windings. The rotor has magnetic poles with alternating N poles and S poles circumferentially disposed at...
|
|
|
7466058 |
Transverse flux electrical machine with segmented core stator
The invention relates to a transverse flux electrical machine, comprising a rotor and a stator. The rotor has magnets, angularly adjacent magnets having magnetic polarizations of opposite...
|
|
|
7466057 |
Claw pole motor stator
2m sets (m being a natural number of 2 or more; and m=2 in embodiments) of teeth ( 31 b to 34 b ) and 2m−1 slots ( 41, 42, 43 ) are disposed alternately in an axial direction; those of windings...
|
|
|
7449805 |
Stepping motor and electronic apparatus
A stepping motor includes a rotor having a cylindrical permanent magnet, ring-shaped first and second yoke units that are arranged so as to be mutually stacked along an axis of the rotor, and a...
|
|
|
7446442 |
Stepping motor and drive device
A stepping motor includes a rotatable cylindrical magnet circumferentially divided to be alternately magnetized with different magnetic poles, a first coil and a second coil disposed in positions...
|
|
|
7443061 |
Driving device
A driving device which is capable of delivering higher power and can be reduced in size. A hollow-cylindrical magnet ( 1 ) is magnetized so as to have circumferentially alternately different poles....
|
|
|
7439647 |
Brushless DC motor and stator thereof
A brushless DC motor and a stator thereof. The stator comprises an upper magnetic pole piece and a lower magnetic pole piece. The upper magnetic pole piece comprises a plurality of upper protruding...
|
|
|
7345395 |
Motor stator core with skewed slots and production process therefor
In a motor stator, teeth radially project from an annular stator core, and a plurality of slots formed between adjacent teeth are skewed. Phase windings alternately pass through slots having...
|
|
|
7291945 |
AC motor and control device therefor
A rotor, which is rotatable about a rotor shaft, comprises N poles and S poles alternately disposed in the circumferential direction, and rotor-side neutral poles disposed adjacent to the N poles...
|
|
|
7288869 |
Stepping motor
A stepping motor comprising a circular stator core having a plurality of pole teeth at an inner circumferential edge and an air core coil fitted to the periphery of the pole teeth. An insulating...
|
|
|
7279820 |
Transversal flux machine
A machine with transversal flux comprises a stator and a rotor. Therein, either the stator has a coil arrangement and the rotor is provided with permanent magnet elements, or the rotor may have a...
|
|
|
7250698 |
Multi-phase claw-pole type rotary machine
A two-phase or three-phase claw-pole type rotary machine comprises two or three coaxially arranged single phase rotary machine elements. Each of the rotary machine elements has a magnet rotor, a...
|
|
|
7242123 |
Actuator, light quantity adjusting apparatus, and stepping motor
An actuator maintains high efficiency, can react to an increase in pole, has a high part fit, and can be manufactured at low cost while it is thinned. The actuator includes a magnet which is formed...
|
|
|
7235911 |
Stepping motor
A stepping motor includes: a magnet; a coil arranged concentrically with the magnet and to be opposed to a magnet, a predetermined clearance being provided between the magnet and the coil; and a...
|
|
|
7235903 |
Step motor having stator with separated structure
A step motor includes a spindle, a magnet unit mounted around the spindle, and a stator assembly sleeved over the magnet unit. The stator assembly includes at least one coil-and-yoke unit having a...
|
|
|
7205697 |
Claw-pole permanent magnet stepping motor
A claw-pole PM stepping motor includes a module that is formed in such a manner that a first driving unit and a second driving unit are symmetrically arranged with respect to a first claw-pole and...
|
|
|
7199500 |
Claw-pole electric generator and bicycle electric generator hub
A claw-pole electric generator has a circumferentially arranged permanent magnet, a ring-shaped coil, a yoke and a cover member. The yoke surrounds an external periphery of the coil. The yoke has a...
|
|
|
7193340 |
Low-profile stepping motor
A low-profile stepping motor is disclosed, which is preferably used in downsized and lower-profiled electronic devices, such as a printer, a facsimile, a floppy disk drive, and the like. The motor...
|
|
|
7187260 |
Electromagnetic device with cover for prevention of damage to conductor of electromagnetic device
A stepping motor according to the present invention used in a case containing oil includes a motor having a coil formed with a conductor wound around a bobbin and a cover member enclosing the coil,...
|
|
|
7155804 |
Method of forming an electric motor
A stator is provided for an electrical device (e.g., a motor) comprised of one or more stator segments formed by the compaction of one or more powdered metallic materials. Each stator section has...
|
|
|
7135802 |
Claw pole motor stator
A claw pole motor stator includes teeth for N phases (N being a natural number of 3 or more), for example, U-phase, V-phase, and W-phase teeth juxtaposed in an axial direction, return paths for...
|
|
|
7088029 |
Generator
An electric generator 10 of the present invention comprises a permanent magnet 14 , a coil 30 , a yoke 20 , and attracted means 19 composed of a plurality of attracted pieces 18 which are...
|
|
|
7071593 |
Claw-pole type stepping motor
A claw-pole type stepping motor comprises: a rotor assembly shaped substantially cylindrical, and having a center shaft; and a stator assembly composed of two cup-shaped stator units which are...
|
|
|
7067953 |
Stator arrangement for an electric machine
The invention relates to a stator arrangement for an electric machine having a stator ring that is closed at its inside circumference and has stator poles at its outside circumference, wherein the...
|
|
|
7053517 |
Stepping motor with dual-layer bobbin cover
In a stepping motor comprising a pair of stator yokes and a bobbin that includes a cylindrical body and two flanges, each of the two flanges radially extending outward from the cylindrical body so...
|
|
|
7015604 |
Stepping motor and method of manufacturing stepping motor
A stepping motor includes: a rotary shaft; a rotor magnet mounted fixedly on the rotary shaft; a bearing member including a smaller-diameter portion and a larger-diameter portion, and supporting...
|
|
|
7015603 |
Electric motor
In order to construct a brushless electric motor comprising a housing, comprising a rotor and comprising a stator, each stator unit including pole shoes, formed as claw poles, as well as a coil...
|
|
|
6979918 |
Actuator
An actuator according to the present invention includes: a rotor that includes a magnet that has a cylindrical shape, and an outer peripheral surface alternately magnetized into different poles in...
|
|
|
6960850 |
Electromagnetic device in an automotive transmission with sulfur corrosion resistant insulating layer
An electromagnetic device includes an outer casing, a shaft rotatably supported by the outer casing, and a motor main body disposed inside the outer casing, the motor main body having a stator and...
|
|
|
6946771 |
Polyphase claw pole structures for an electrical machine
A magnetic circuit component having a plurality of claws arranged in a plurality of rows, with the base of each claw connected to a common yoke. A plurality of non-interlaced coils constituting a...
|
|
|
6924571 |
Spring-driven generator
A spring-driven permanent magnet generator comprising a bobbin-mounted coil, inner and outer frame members defining diametrically opposite pole pieces and a structure which cages or essentially...
|
|
|
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...
|
|
|
6909208 |
Stator sub-assembly, stator assembly, motor and manufacturing method of stator assembly
A stator sub-assembly comprises: a coil bobbin which is composed of a cylinder having a winding of a magnet wire therearound, and a terminal block provided with terminal pins connected to lead...
|
|
|
6897579 |
Motor
A motor includes a magnet formed into a hollow disc shape and having at least one flat surface circumferentially divided and alternately magnetized to opposite poles, a first coil having an inner...
|
|
|
6891307 |
Motor with a plurality of pole teeth
A motor includes a plurality of core assemblies forming three phases, and a plurality of coil windings provided on the respective core assemblies, wherein one of the coil windings is wound in a...
|
|
|
6885128 |
Low-profile stepping motor with two coils arranged flush with each other horizontally
A low-profile stepping motor has a stator assembly structured such that first and second coil units are disposed flush with each other horizontally and are sandwiched between upper and lower stator...
|
|
|
6882066 |
Unipolar transverse flux machine
In a unipolar transverse flux machine, in particular a motor, having a rotor, which is comprised of two coaxial, ferromagnetic, toothed rotor rings, and a permanent magnet ring, which is magnetized...
|
|
|
6879075 |
Trapezoidal shaped magnet flux intensifier motor pole arrangement for improved motor torque density
A permanent magnet synchronous machine with improved torque and power characteristics. A circumferential-oriented rotor assembly is provided with alternating permanent magnets and magnetic pole...
|
|
|
6876109 |
Claw-pole type stepping motor having radial dimension reduced without detriment to performance characteristic
A claw-pole type stepping motor comprises: a rotor which is shaped substantially cylindrical, and which has a rotary shaft at its radial center; and two stators which are shaped like a cup, each...
|
|
|
6873068 |
Stepping motor
A stepping motor includes a stator whose outer diameter is 8 mm or less and a rotor having a magnet disposed opposing to the stator. The stator has a core with pole teeth formed therein. The ratio...
|