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| Number | Title | Issue Date |
| 8148867 | Permanent magnet brushless machine with magnetic flux regulation A permanent magnet machine (PMM) has a generally cylindrical permanent magnet (PM) rotor that has multiple PM rotor poles arranged around a rotor axis of rotation; and a stator with two generally cylindrical and concentric yokes, an inner yoke proximate the PM rotor... | 04/03/2012 |
| 7408278 | Motor-generator with adjustable axial gap for vehicle A rotary electric machine capable of optionally adjusting output characteristic and an electric motor vehicle using the rotary electric machine are provided. A rotary electric machine is constituted with: a rotary shaft 220; a rotor 40 connected... | 08/05/2008 |
| 7402929 | Magnetic motor with magnet assemblies A magnetic motor that includes a plurality of rotor magnet assemblies, a plurality of drive magnet assemblies that are laterally moveable with respect to the rotor magnet assemblies, a timing assembly for generating power pulses selectively supplied to the drive mag... | 07/22/2008 |
| 7385332 | Permanent magnet dynamoelectric machine with axially displaceable permanent magnet rotor assembly A dynamoelectric machine comprises: a stator that comprises a plurality of stator poles arranged around a stator surface of revolution with a stator axis for the stator surface of revolution; at least one rotor that comprises a plurality of permanent rotor magnets a... | 06/10/2008 |
| 7342342 | Rotary electrical machine and electric vehicle having the same A rotary electrical machine includes a rotational shaft supported by a housing for rotation about an axis, a rotor coupled with the rotational shaft, and a stator fixed to the housing and oriented to face the rotor. A rotor position changing mechanism moves the roto... | 03/11/2008 |
| 7312552 | Rotary electro-dynamic machine and armature winding thereof Sub core sections are arranged at the end portions and the center portion of a stator core, and strand conductors are twisted and transposed by 360 degrees continuously toward the extending direction of winding slot. The length corresponding to transposition pitch 1... | 12/25/2007 |
| 7309941 | Rotating electric machine and electric vehicle A rotating electric machine according to the present invention includes: a rotation axis extending along a first direction; a first rotor for coupling with the rotation axis to rotate together with the rotation axis; a first stator disposed so as to oppose the first... | 12/18/2007 |
| 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) and teeth (13) on its radially inwardly or... | 10/16/2007 |
| 7265473 | Reduction of core-end losses of dynamoelectric machines by using lower core loss iron silicon punching Electric machines can be improved or uprated to reduce core-end losses using lower core loss material such as high grade iron silicon. A machine uprating entails removing at least a last one of the stacked lamination packages at each end of the stator core, and re-s... | 09/04/2007 |
| 7259492 | Rotor axial activation modulation of electric machinery due to reverse torque The invention involves installation of a helical nut structure, or a helical nut and ball or roller bearing structure, between an electric machinery transmission shaft and a driven transmission element. Depending on the torque between the electric machinery rotor, a... | 08/21/2007 |
| 7091647 | Micromechanical device having braking mechanism The present invention provides a brakeable microapparatus comprising a substrate and a structure overlying the substrate and movable relative to the substrate. A frictional brake overlies the structure and is movable into frictional engagement with the structure for... | 08/15/2006 |
| 7071584 | Linear motor A linear motor includes tubular outer yoke (4), tubular inner yoke (3) disposed in outer yoke (4), coil (2) provided to inner yoke (3), permanent magnet (5a, 5b) vibrating following a magnetic flux produ... | 07/04/2006 |
| 7057323 | Modular flux controllable permanent magnet dynamoelectric machine A modular assembly for an electromagnetic machine is disclosed. The modular assembly includes a rotor assembly and a flux controlling assembly. The rotor assembly has a shaft and has a plurality of rotor laminations mounted on the shaft. The rotor laminations define... | 06/06/2006 |
| 7002274 | Rotary electric machine and automobile provided with the same In a rotary electric machine capable of improving the reliability of an object provided with the same, a permanent magnet type synchronous rotary electric machine comprises has a stator provided with windings. A rotor arranged supported for rotation in the stator wi... | 02/21/2006 |
| 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 cylindrical shape and a wound coil and a magnet formed in a cylindrical shap... | 01/10/2006 |
| 6975055 | Dynamo-electric machine having a rotor with first and second axially or rotationally displaceable field magnets A dynamo-electric machine has a stator with a primary winding and a rotor with a field magnet and a shaft. the field magnet includes a first field magnet having diferent polarity magnetic poles sequentially arranged in a rotation direction and a second field magnet ... | 12/13/2005 |
| 6965187 | Rotor In the case of a rotor (10) having a rotor spider (11), which is mounted such as it can rotate about an axis (15) and has two or more ribs (12), and having a laminated rim (14), which concentrically surrounds the rotor spider (1... | 11/15/2005 |
| 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 motor/alternator geometry minimizes flux leakage. The form of the flux conductor an... | 08/02/2005 |
| 6900570 | Field controlled permanent magnet brushless electric machine A brushless electric machine comprising a housing fabricated from a magnetically permeable material and having an interior region, a stator mounted within the interior region and attached to the housing wherein the stator has a stator winding, a rotor mounted for ro... | 05/31/2005 |
| 6856061 | Synchronous resolver, resolver cable and direct drive motor system A synchronous resolver has: a stator including a plurality of stator poles disposed at regular intervals along the circumferential direction of a ring-shaped stator base portion, the stator poles comprise a plurality of phases; coil bobbins former-wounded stator coi... | 02/15/2005 |
| 6806610 | Magnetic motor with movable rotor and drive magnets The invention provides a magnetic motor wherein a plurality of rotor magnets are positioned along a rotor which is mounted to a shaft. A plurality of drive magnets are movably positioned generally adjacent to the rotor magnets. Relative motion of the drive magnets i... | 10/19/2004 |
| 6794776 | Inductor alternator flywheel system An inductor alternator flywheel system, for converting between electrical and kinetic energy, includes an annular steel flywheel mounted on bearings for rotation about an axis. The flywheel has an inwardly facing radial surface forming multiple protrusions or teeth ... | 09/21/2004 |
| 6771000 | Electric rotary machine and power generation systems using the same The present invention provides an electric rotary machine including a rotor having a field magnet provided on a shaft, the field magnet having magnetic poles of sequentially different polarities arranged in a rotational direction, a second field magnet with magnetic... | 08/03/2004 |
| 6727632 | Flat rotary electric machine A flat rotary electric machine to be mounted in a vehicle engine includes an annular stator core with a plurality of teeth and an armature winding and a field unit including a gutter-like field core having a pair of coaxial cylindrical core members. A plurality of p... | 04/27/2004 |
| 6664694 | Rotor axial activation modulation of electric machinery due to centrifugal force This case is about the rotating electric machinery in which between the rotating shaft of the electric machinery and the electric machinery rotor or between the electric machinery rotor and the stator, or between the rotating shaft of the electric machine... | 12/16/2003 |
| 6566777 | Elastic wave actuator An elastic wave actuator and method to convert electrical energy to mechanical energy with alternate high speed or high torque output options. The actuator comprises a cylindrical rotor flexible shell rotatably mounted coaxially within a stator. A radiall... | 05/20/2003 |
| 6555941 | Brushless permanent magnet motor or alternator with variable axial rotor/stator alignment to increase speed capability A brushless permanent magnet electric machine with a fixed radial air gap is operated to a much higher speed than normal maximum speed by the reduction in effective magnet pole strength. Increasing the amount of axial misalignment of the permanent magnet ... | 04/29/2003 |
| 6492753 | Brushless permanent magnet motor with variable axial rotor/stator alignment to increase speed capability A brushless permanent magnet electric motor with a fixed radial air gap is operated to a much higher speed than normal maximum speed by the reduction in effective magnet pole strength. Increasing the amount of axial misalignment of the permanent magnet ro... | 12/10/2002 |
| 6469412 | Universal electric motor with variable air gap The present invention relates to a universal electric motor with variable air gap. It has a rotor (1) with on or more attraction steps and a stator (2) provided with an excitation system. The excitation system comprises, mounted consecutively distanced on... | 10/22/2002 |
| 6455975 | Regulated permanent magnet generator A regulated permanent magnet generator incorporating a "tapered" or conical design for improved voltage regulation. The tapered faces of the rotor and stator are axially displaced from one another as the demand for voltage changes. In addition, this desig... | 09/24/2002 |
| 6329736 | Electronically commutated motor An electronically commutated motor is described that has a stator, carrying at least two winding phases, multiple magnet poles and grooves and a rotor, in which a defined position between the rotor and the stator can be detected by way of a position sensi... | 12/11/2001 |
| 6249069 | Output regulation of internal combustion engine alternator by mechanical means A permanent magnet alternator employing a mechanically regulated output. The alternator contains a rotor, or a flywheel which houses a plurality of permanent magnets. A rotating magnetic flux field is created by the rotation of the flywheel. A stator asse... | 06/19/2001 |
| 6194802 | Axial gap motor with radially movable magnets to increase speed capablity A brushless motor with axial air gaps is rotated at speeds higher than that of conventional motors by using magnets adjustable in the radial direction. The axial gap machine includes one or more stators, containing windings that conduct electrical current... | 02/27/2001 |
| 6181047 | Permanent magnet motor with improved stator core and washing machine provided therewith A permanent magnet motor includes a rotor having a permanent magnet and a stator core having circumferential teeth the number of which is 2n where n is an integer equal to or larger than 2, the teeth including first teeth the number of which is n and seco... | 01/30/2001 |
| 6177748 | Interleaved laminated core for electromagnetic machine A core configuration for use with an electromagnetic machine including first and second pluralities of laminations, each of the first and second pluralities having different properties and/or operating characteristics, the first and second pluralities int... | 01/23/2001 |
| 6166463 | Axial force electrical machines The present invention resides in a radial air gap machine with a serrated air gap that can minimize external axial forces. This is accomplished by controlling the relationship between the air gap surfaces in the stator and rotor sections. To control the r... | 12/26/2000 |
| 6097129 | Electronically commutated motor An electronically commutated external rotor motor has an external rotor having a cup-shaped housing and a radially magnetized permanent magnet connected in the cup-shaped housing. An interior stator is positioned in the cup-shaped housing. The interior st... | 08/01/2000 |
| 6094011 | Discharge lamp lighting device driven by internal combustion engine A discharge lamp lighting device driven by an internal combustion engine is disclosed which is capable of lighting a discharge lamp without using a ballast constituted by a leakage transformer. The device includes a generator which is driven by the intern... | 07/25/2000 |
| 6075298 | Rotary and linear translation actuator performing multi-functions in an automobile A multi-functional electronic actuator for actuating multiple independent systems on an automotive vehicle includes a magnet assembly, a rotor mounted within the magnet assembly having an armature and a shaft that rotates when the armature is energized, a... | 06/13/2000 |
| 5907202 | Thermo-sensitive actuator and idle speed controller employing the same A thermo-sensitive actuator capable of operating without the need of providing a temperature detector as a separate member. The actuator includes a stator made of a magnetic material to form a yoke. A rotor is rotatably provided in an opening provided in ... | 05/25/1999 |
