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| Number | Title | Issue Date |
| 7839042 | Inductor motor and manufacturing method of inductor motor An inductor motor includes a stator block, a substantially cylindrical excitation coil, and a rotor including two substantially columnar magnet rotors coaxially arranged, and the magnet rotors are individually inserted inside two stator blocks coaxially arranged. Th... | 11/23/2010 |
| 7723888 | Synchronous electromechanical transformer The invention relates to a synchronous electromechanical transformer that can be used as a multi-phase motor and generator, has a high specific torque, a small or negligible stop moment, a small moment irregularity, can be quietly operated, and has good heat permeab... | 05/25/2010 |
| 7501733 | Electric machine A two-phase electric motor includes first and second coil groups and a magnet group. In the magnet group, N poles and S poles are disposed alternatively opposite the first and second coil groups. The first and second coil groups are disposed at positions that are ou... | 03/10/2009 |
| 7440689 | Electromagnetically actuated adjusting apparatus for lens An electromagnetically actuated adjusting apparatus for lens is disclosed. The adjusting apparatus comprises a body capable of furnishing a lens inside, at least one permanent magnet, a first magnetic conductor and a second magnetic conductor. The first and the seco... | 10/21/2008 |
| 7436137 | Drive regenerative control system Provided is a drive regenerative control system of a drivee with a motor superior in torque and weight balance and suitable for miniaturization as the drive source. In a drive regenerative control system having a drive source with an electric motor, a drivee, a cont... | 10/14/2008 |
| 7312549 | Transverse flux machine with stator made of e-shaped laminates In order to improve the torque per weight ratio in electrical machines for a lower price it is proposed to use a segmented stator design. The segmented stator design is based on general E shaped cores traditionally used for single-phased transformers and inductors, ... | 12/25/2007 |
| 7279858 | Drive regenerative control system Provided is a drive regenerative control system of a drivee with a motor superior in torque and weight balance and suitable for miniaturization as the drive source. In a drive regenerative control system having a drive source with an electric motor, a drivee, a cont... | 10/09/2007 |
| 7262536 | Gearless wheel motor drive system Methods and apparatus are provided for an electric vehicle embodying an axial flux traction motor directly coupled to a wheel thereof. The fraction motor includes a stator having coils for producing a magnetic field, an annular rotor magnetically coupled to the stat... | 08/28/2007 |
| 7230361 | Efficient high-speed electric device using low-loss materials The invention relates generally to an electric device, such as an electric motor, a generator, or a regenerative motor, having a wound stator core made from advanced low-loss material. In preferred embodiments, the electric device is an axial airgap-type configurati... | 06/12/2007 |
| 7174093 | Wheel chair drive apparatus and method A control system for a powered wheel chair drive modulates a pulse power delivery signal such that power is delivered gradually at throttle positions corresponding to a low speed, and power is delivered more rapidly at throttle positions corresponding to a higher sp... | 02/06/2007 |
| 7167364 | Cooler with blower between two heatsinks A cooler for cooling of electronic components comprises at least two heatsinks thermally connected with each other by heat spreading means, and a double inlet centrifugal blower comprises a casing with two inlets and an outlet, a radial impeller with an axle and an ... | 01/23/2007 |
| 7148592 | 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 in a ring shape, in which at least one surface perpendicular to a c... | 12/12/2006 |
| 7145308 | Floating armature electric motor and method of assembly An apparatus for converting electrical energy into mechanical energy includes a plurality of iron segments disposed in a circular, generally donut-shaped body that is substantially non-magnetic, and which forms a rotor of an electric motor. Each of a first plurality... | 12/05/2006 |
| 7132760 | Wind turbine device A hybrid blade wind turbine device formed of at least a pair of straight outer airfoil blades, and a pair of inner helical wing blades, as supported for rotation within a safety protective cage structure, which wind turbine can be mounted in the vertical, horizontal... | 11/07/2006 |
| 7117967 | Wheel chair apparatus and method A wheel chair drive apparatus includes a frame having a wheel mount, a battery mount, and a control shaft mount. A drive wheel has a drive motor incorporated within the drive wheel. A battery is in operative communication with the drive motor via a detachable jack. ... | 10/10/2006 |
| 7109599 | Omni-directional wind turbine electric generation system An omni-directional wind turbine electric generation system including a wind rotor carrying wind responsive vanes which on one surface exert an aerodynamic lifting force and on the other a blocking force both of which exert a torque in the same rotational sense, and... | 09/19/2006 |
| 7109629 | Rotor disc for an electrical machine and a retainer A rotor disc for an electrical machine is disclosed. The rotor disc comprises a series of magnetisable members arranged in a circumferential series on a surface thereof and against peripheral retaining structure of the disc. The disc also includes a retainer fixable... | 09/19/2006 |
| 7042109 | Wind turbine A wind turbine for generating electrical power from wind energy includes a turbine rotor mounted for rotation in wind, and having multiple blades for converting energy in the wind into rotational energy. A generator is coupled with said turbine rotor such that said ... | 05/09/2006 |
| 7034427 | Selective alignment of stators in axial airgap electric devices comprising low-loss materials An axial gap dynamoelectric machine comprises first and second stators disposed coaxially with an intermediate rotor. The stators are selectively aligned with an axial offset between the positions of their respective teeth and slots. The stators comprise toroidal co... | 04/25/2006 |
| 7034422 | Radial-axial electromagnetic flux electric motor, coaxial electromagnetic flux electric motor, and rotor for same A rotor for an electrical motor may include a plurality of salient radial field rotor poles and a plurality of salient axial field rotor poles. The radial field rotor poles and the axial field rotor poles are respectively oriented on the rotor to receive or convey s... | 04/25/2006 |
| 6998755 | Electronically-commutated electric motor comprising coils with parallel axes The invention relates to an electronically commutated electric motor having a multi-pole magnetized permanent magnet, a plurality of flux guide units each of which features at least one flux collector section and one flux concentrator section, whereby each flux guid... | 02/14/2006 |
| 6995494 | Axial gap brushless DC motor A dual stator axial gap DC brushless machine is provided with first and second stators having equal pole counts, a given pole arc, and a given slot arc. A rotor is disposed between the first and second stators, having a pole count greater than the first and second s... | 02/07/2006 |
| 6969937 | Multiple, permanent-magnet rotor for a rotating electrical machine, and a method for producing same In order to allow a rotating electrical machine, which uses a permanent-magnet rotor with a flux-concentration construction for a rated power of more than 100 kW, to be assembled as easily as possible, two mutually adjacent half-yokes of two poles as well as magnets... | 11/29/2005 |
| 6952068 | Fabricated components of transverse flux electric motors Transverse flux electric motors are made using a unique process where individual components are premade and then assembled together. A stator portion is made by nesting a coil between two stator core portions. The stator core portions are made from laminations or si... | 10/04/2005 |
| 6930426 | Alternator stator having a multiple filar construction to improve convective cooling A stator for a dynamoelectric machine improves the cooling of the stator winding without increasing the size of the stator winding or the entire stator. The stator is of a unique construction wherein the size, and more specifically the cross sectional area or volume... | 08/16/2005 |
| 6930433 | Brushless electro-mechanical device An electromotive machine having a stator element and a rotor element, the stator element including at least one set of N preferably toroidally shaped electromagnetic members, the electromagnetic members arranged along an arc a predetermined distance apart defining a... | 08/16/2005 |
| 6891295 | Flywheel magneto generator A flywheel magneto generator which comprises a rotor having a magnet attached to an outer circumferential side of a flywheel and a stator constructed by winding a generating coil around a core having a magnetic pole portion opposed to a magnetic pole of the rotor, w... | 05/10/2005 |
| 6845617 | Center housing design for electric assisted turbocharger An electric assisted turbocharger has an electric motor with a stator and a rotor that is coupled to a turbocharger shaft carried by a bearing assembly. The stator has a left-hand winding and a right hand-winding each projecting axially outwardly therefrom. The wind... | 01/25/2005 |
| 6713926 | Thin and lightweight inner rotor motor and disk unit using the same There are provided a rotor having plural magnetic poles disposed in a circumferential shape, and a stator including a stator core having plural magnetic pole teeth that are outside a circumference of the rotor and face the rotor, a coil being wound around each of th... | 03/30/2004 |
| 6707208 | Flux diode motor An electric motor utilizing permanent magnets, wherein the permanent magnets produce a flux circuit in a first direction and shunt elements whereby the magnets and shunt elements rotate relative to each other wherein the shunt elements sequentially interrupt the mag... | 03/16/2004 |
| 6552460 | Brushless electro-mechanical machine An electromotive machine having a stator element and a rotor element, the stator element including at least one set of four toroidally shaped electromagnetic members, the electromagnetic members arranged along an arc a predetermined distance apart definin... | 04/22/2003 |
| 6509663 | Stepping motor A stepping motor comprises a stator (3) with at least two magnetic circuits and a rotor (2) that is rotatably mounted on the stator through a single ball bearing having four contact points. The rotor comprises a mutipolar magnet (5) essentially in the for... | 01/21/2003 |
| 6459185 | Electrical machine with permanent magnets An electric machine comprising the following features: (a) an outer, first stator part and an inner, second stator part, the two stator parts being coaxial and being radially spaced apart by an intermediate space; (b) each stator part has, facing the inte... | 10/01/2002 |
| 6455969 | Multiple layer double rotor single stator skew symmetry permanent magnet rotating motor A single-stator-double-rotor rotating motor has one upper-layer rotor, one intermediate-layer armature and one lower-layer rotor. The upper-layer rotor and lower-layer rotor are embedded with the same number of magnets to form a magneto type magnetic pole... | 09/24/2002 |
| 6445105 | Axial flux machine and method of fabrication An axial flux machine includes a rotatable shaft; at least one rotor disk coupled to the rotatable shaft; at least one permanent magnet supported by the at least one rotor disk; at least one stator extension positioned in parallel with the at least one ro... | 09/03/2002 |
| 6348751 | Electric motor with active hysteresis-based control of winding currents and/or having an efficient stator winding arrangement and/or adjustable air gap An electric motor is provided with active hysteresis-based control of winding current. The motor has an efficient stator winding arrangement, as well as at least one adjustable air gap. Also provided is a stator, windings and air gap adjustment mechanism,... | 02/19/2002 |
| 6133656 | Brushless commutated torque motor for use with a rotary low frequency sound reproducing apparatus A brushless commutated torque motor suitable for use with a rotary low frequency sound reproducing apparatus, includes a shaft having a longitudinal axis, a position sensor, a rotor having a plurality of permanently magnetized rotor pole sectors, the roto... | 10/17/2000 |
| 6114788 | Motor/active magnetic bearing combination structure A motor/active magnetic bearing combination includes two stator base plates made of magnetic material. A plurality of sets of north and south poles, numbering at least three are formed on each of the stators, and each set comprises one or two south poles ... | 09/05/2000 |
| 6087750 | Permanent magnet generator A permanent magnet generator is described. The generator includes a shaft which defines a longitudinal axis. A rotatable magnetic field assembly is mounted on the shaft and adapted for rotation about the shaft. The magnetic field assembly includes a plura... | 07/11/2000 |
| 6037696 | Permanent magnet axial air gap electric machine A rotor for use in an electric machine, such as an electric motor having a pair of stators and a rotor, which includes a central sheet, typically connected to a rotating shaft, having a pair of opposing faces, typically parallel, and one or more pairs of ... | 03/14/2000 |
