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| Number | Title | Issue Date |
| 8148871 | Structure of casing of small stepping motor Disclosed is a structure of a casing of a small stepping motor having an outer diameter of 8 mm or less, in which yoke teeth are integrally formed on the inner surface of the casing, and the thickness of the outer wall of the casing is different from the thickness o... | 04/03/2012 |
| 8125116 | Alternator for vehicle and rotating electrical machine An alternator for vehicle includes a stator that outputs an AC voltage and a rotor that includes a field coil and a rotor core. The stator includes a plurality of phase stators that are disposed side-by-side along the rotational axis and individually output AC volta... | 02/28/2012 |
| 7977844 | Inductor-type synchronous machine An inductor-type synchronous machine having an axial gap structure, which has a shaft portion at the center thereof, the machine includes: a field-side stator which has a yoke made of a magnetic material and a field body protruding from the yoke in an axial directio... | 07/12/2011 |
| 7977828 | Stepping motor A stepping motor may include a rotor having a drive magnet and a stator having a drive coil wound in a tube shape and disposed on the drive magnet. The stator may include a first yoke, a second yoke, a plurality of first pole teeth provided in the first yoke, and a ... | 07/12/2011 |
| 7969060 | Electric motor The invention relates to an electric motor comprising a permanent magnet rotor, which is supported rotationally about a central axis, a wound stator having a cylinder ring-shaped stator winding, claw poles, which are disposed perpendicularly to ring disc-shaped stat... | 06/28/2011 |
| 7956509 | Electric pump A pump is driven by a compact electric motor in which a coil is disposed in a ring form around and along a stator core which has a plurality of claw magnetic poles that extend alternately from both ends of one member of the stator core toward the end of the other me... | 06/07/2011 |
| 7868511 | Electrical devices using disk and non-disk shaped rotors Various devices for generating electrical or mechanical output, comprising a coil, a rotor assembly rotatable about an axis, the rotor comprising alternating magnet portion and flux conducting portions, each of the magnet portions having a first end with a first pol... | 01/11/2011 |
| 7868510 | High-efficiency wheel-motor utilizing molded magnetic flux channels with transverse-flux stator A motor including an outside rotor having a rotor disc with plural magnets alternating polarities flush mounted in the disc, an inside stator assembly with a ring of pole pieces forming a channel to house a transversely wound stator windings, and a controller couple... | 01/11/2011 |
| 7855486 | Claw pole generator, especially for bicycle generator hub A claw pole generator is basically provided with a circularly arranged permanent magnet and an internal stationary unit with a yoke and a coil. The yoke includes a first laminated yoke and a second laminated yoke. The first and second laminated yokes include a disc-... | 12/21/2010 |
| 7843106 | Motor that reduces magnetic interference A motor includes a housing formed of a first shell and a second shell, a stator, which is formed of a first yoke, a second yoke, a connecting device and two coils. The first yoke and the second yoke each comprise a terminal holder mounting portion, a race and a plur... | 11/30/2010 |
| 7839046 | Claw pole type motor and pump A claw pole type motor includes a rotor having a magnet arranged on an outer circumferential surface thereof and a stator including an annular iron core and an annular coil received within the iron core. The iron core includes a yoke portion opened in an inner circu... | 11/23/2010 |
| 7800275 | Electrical devices using electronmagnetic rotors A device for generating electrical or mechanical output, comprising a rotor coil, a rotor assembly with an axis, and having rotator extensions, a stator coil, and a stator assembly, the stator assembly having two sets of stator flux conductor extensions, the rotator... | 09/21/2010 |
| 7795775 | Motor stator A motor stator includes a claw-pole assembly (20), a fixing structure (10) and a sleeve bearing (60). The claw-pole assembly includes a pair of yokes (20a, 20b) each having a plurality of pole teeth (24) interm... | 09/14/2010 |
| 7795774 | Multiple phase claw pole type motor A claw pole type motor includes first and second claw poles opposed to each other and each including a radial yoke portion having an inner diameter side and an outer diameter side, a plurality of pole portions arranged on the inner diameter side, and axially extende... | 09/14/2010 |
| 7791244 | Multiphase claw-pole type electric rotary machine, cogging torque adjustment system of the same, generator system, and motor system A multiphase claw-pole type electric rotary machine has two or more phases-stator units. The stator units are arranged phase by phase in an axial direction of the electric rotary machine. Each phase stator unit comprises a pair of complementary-opposed claw pole cor... | 09/07/2010 |
| 7772741 | Wind turbine generator A wind turbine generator produces alternating current. The generator contains an inner cylindrical stator and an outer cylindrical rotating housing. The stator has a transverse row of molded magnetic flux members mounted on its exterior wall and a metal conductor ru... | 08/10/2010 |
| 7759837 | Rotating electrical machine Stator claw poles are disposed at a stator core at a position facing opposite a rotor so as to alternately range from the two sides along the axial direction. With a plurality of magnetic poles thus formed, the distance by which the gap between the front end portion... | 07/20/2010 |
| 7750529 | Electric Pump A pump is driven by a compact electric motor in which a coil is disposed in a ring form around and along a stator core which has a plurality of claw magnetic poles that extend alternately from both ends of one member of the stator core toward the end of the other me... | 07/06/2010 |
| 7714466 | Claw-teeth-type rotating electrical machine To realize reduction in vibration and noise while utilizing reluctance torque, a rotating electrical machine includes: a rotor having permanent magnets disposed in a cylindrical surface coaxial with a rotary shaft; and a stator having an annular stator core disposed... | 05/11/2010 |
| 7714475 | Multiple phase claw pole type motor In a multiple phase claw pole type motor which includes: a plurality of claw poles including a claw portion extending in an axial direction and having a magnetic pole surface facing a rotor in a state of being separated from the rotor by a small gap, a radial yoke p... | 05/11/2010 |
| 7701109 | Rotating electrical machine It is an object of the present invention to make it possible to easily wind a stator winding, enhance an occupied ratio in a stator core, reduce a winding resistance because there is no coil end, and change a field magnetic flux in accordance with a use. Stat... | 04/20/2010 |
| 7692355 | Electric motor The invention relates to an electric motor having a permanent magnetic rotor supported in a rotatable fashion around a central axis, a wound stator with a cylindrical stator winding, claw poles, perpendicular in reference to the disc-shaped stator plates and arrange... | 04/06/2010 |
| 7679258 | Eccentric rotor and vibration motor incorporating the eccentric rotor A vibration motor includes a housing, a stator (10) received in the housing (30) and a rotor (20) rotatably disposed in the stator. The stator includes two claw-pole assemblies (11) arranged back-to-back, and a shaft (23) being fix... | 03/16/2010 |
| 7649299 | Rotating electrical machine and alternating-current generator It is made easy for a stator winding to be wound around a stator core and degradation in efficiency is prevented as much as possible. A stator (6) includes a plurality of phases, i.e., of circumferentially divided stator magnetic poles (6a, 6... | 01/19/2010 |
| 7649298 | Claw teeth type electric rotary machine and manufacturing method for stators A claw teeth type electric rotary machine comprises a stator including an annular core with claws formed from a powder core and an annular coil installed inside the annular core, and a rotor rotatably positioned inside the stator. An inner edge of the annular core i... | 01/19/2010 |
| 7638919 | Stator arrangement and rotor arrangement for a transverse flux machine A stator arrangement and a rotor arrangement for a transverse flux machine. The stator arrangement comprises an annular stator back yoke having a number of stator poles designed in the manner of claw poles. The rotor arrangement includes number of rotor poles design... | 12/29/2009 |
| 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 integer one or more) per one phase and coaxially layered, and the stator u... | 12/15/2009 |
| 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 are formed between adjacent stator rings, and an annular winding is i... | 10/27/2009 |
| 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 axial direction are provided, and stator cores are formed by meshing of t... | 10/20/2009 |
| 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 rows of plural parallel pole molded magnetic flux channels each having ... | 08/25/2009 |
| 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 directions. The stator has a plurality of magnetic cores annularly disposed al... | 12/16/2008 |
| 7466057 | Claw pole motor stator 2m sets (m being a natural number of 2 or more; and m=2 in embodiments) of teeth (31b to 34b) and 2m−1 slots (41, 42, 43) are disposed alternately in an axial direction; those of windings (36, 37, 38) accommodated in the s... | 12/16/2008 |
| 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. First and second coils (2 and 3) are arranged con... | 10/28/2008 |
| 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 portions extending toward the lower magnetic pole piece, and the low... | 10/21/2008 |
| 7418843 | Drum type washing machine A washing machine has a tub that may be made of plastic. A drum is rotatably installed in the tub. A shaft may pass through the tub and connect to the drum for transmission of a driving power from a motor to the drum. The washing machine has a bearing supporting par... | 09/02/2008 |
| 7380424 | Drum type washing machine Drum type washing machine including a tub of plastic having a wall for holding washing water therein and mounting a driving part thereon, a drum rotatably arranged inside of the tub, a shaft passed through the tub and connected to the drum for transmission of a driv... | 06/03/2008 |
| 7365472 | Electric 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 arranged radially around the rotation a... | 04/29/2008 |
| 7348696 | Stepping motor A stepping motor comprises a stator core, a drive coil which is attached to the stator core and a terminal block having a plurality of terminal pins to be wound with the terminals of the drive coil windings. The stator core and terminal block have respective fitting... | 03/25/2008 |
| 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 different skew directions, wherein the length of bridging portions, which d... | 03/18/2008 |
| 7323800 | Outer stator for reciprocating motor and manufacturing method thereof An outer stator of a reciprocating compressor comprises: a bobbin formed as a ring shape and provided with a winding coil therein; an outer stator frame coupled to an outer circumferential surface of the bobbin and formed of a magnetic body in which a flux flows; a ... | 01/29/2008 |
