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| Number | Title | Issue Date |
| 8159104 | DC induction electric motor-generator with magnetic gap self commutating laminated ferromagnetic rotating core A motor-generator apparatus has a stator and a rotor in a cylindrical arrangement about a central longitudinal axis. The stator has a static circular magnetic surface spaced apart from, a static circular electromagnetic surface. The rotor has a cylindrical arrangeme... | 04/17/2012 |
| 8148866 | Regulated hybrid permanent magnet generator A permanent magnet rotor for an electrical generator has pole pieces with permanent magnets. A control coil is associated with the pole pieces. A current flow through the coils is controlled to achieve a desired output voltage at an output for the generator. ... | 04/03/2012 |
| 8120225 | External split field generator A generator includes a coil disposed about a core. A first stationary magnetic field source may be disposed on a first end portion of the core and a second stationary magnetic field source may be disposed on a second end portion of core. The first and second station... | 02/21/2012 |
| 8115347 | Electrical machine having plastic-sheathed pole teeth, and a corresponding method The production effort for electrical machines with pole teeth which are fitted with permanent magnets is intended to be reduced. A permanent magnet is inserted between two pole teeth halves (1, 2) for this purpose. The two halves (1, 2) are connected t... | 02/14/2012 |
| 8084899 | Driving apparatus A driving apparatus includes a first magnet, second magnet, stator, first coil, second coil, first bearing, second bearing and rotor. The first and second magnets respectively have a magnetized portion in which S pole and N pole are alternately magnetized. The rotor... | 12/27/2011 |
| 8076815 | Pole tooth with end face laminate for connection of pole tooth halves and corresponding method for production of a pole tooth Electrical machines having pole teeth which can be equipped with a permanent magnet are intended to be capable of being assembled more easily. Provision is made for this purpose for two pole tooth halves (1,2) to be provided for each pole tooth, each of which... | 12/13/2011 |
| 8022587 | Electrical machine with nonuniform pole teeth Electric machines which are excited with permanent magnets are to be improved in terms of their smoothness of operation and their loss properties. For this purpose, an electric machine is proposed comprising a first active part (40) on which one electric magn... | 09/20/2011 |
| 8008826 | Brushless motor/generator with trapped-flux superconductors Apparatus and methods provide for a high specific power electro-dynamo device that utilizes high-temperature superconductors, a dysprosium core, and superconducting coils to provide power. According to various embodiments, a rotor includes a number of rotor arms wit... | 08/30/2011 |
| 7982353 | Directed flux motor A directed flux motor described utilizes the directed magnetic flux of at least one magnet through ferrous material to drive different planetary gear sets to achieve capabilities in six actuated shafts that are grouped three to a side of the motor. The flux motor al... | 07/19/2011 |
| 7977841 | Electric machinery with a conduction winding excited magnetic poles wraps PM magnetic pole An electric machinery provided with a PM magnetic pole wrapped by conduction winding excited magnetic poles is related to an innovative design of having a PM magnetic pole wrapped by individual magnetic poles of conduction winding excited so to prevent the PM magnet... | 07/12/2011 |
| 7969057 | Synchronous motor with rotor having suitably-arranged field coil, permanent magnets, and salient-pole structure A rotor of a synchronous motor includes a rotating shaft, a plurality of segments, a plurality of permanent magnets, and a field coil. The segments are located radially outward of the rotating shaft and arranged in the circumferential direction of the rotating shaft... | 06/28/2011 |
| 7880361 | Electrical machine with an insertion device for a permanent magnet between pole tooth halves and corresponding production method The manufacturing effort for producing electrical machines with pole teeth which are fitted with permanent magnets is intended to be simplified. The permanent magnets are inserted into the pole teeth only at the end of the manufacturing process, for this purpose, wi... | 02/01/2011 |
| 7868505 | Motor and electric power supply control apparatus for the motor In a ring body of a stator, permanent magnets are arranged in alternate inter-pole magnetic path portions located between an even number of stator poles so that magnetic fields pointing in the circumferential direction of the ring body are generated. Coils are wound... | 01/11/2011 |
| 7868506 | Flux-switching dual excitation electrical machine Flux-switching electrical machines. In particular, a flux-switching electrical machine having a stator and a rotor. The stator has permanent magnets, armature windings and excitation windings, and the rotor has no winding or permanent magnet but includes a plurality... | 01/11/2011 |
| 7851965 | Transverse and/or commutated flux system stator concepts Disclosed are transverse and/or commutated flux machines and components thereof, and methods of making and using the same. Certain exemplary stators for use in transverse and commutated flux machines may be configured with gaps therebetween, for example in order to ... | 12/14/2010 |
| 7777385 | Compact, electromagnetically braked actuator assembly An actuator assembly includes a motor assembly, a harmonic drive gearbox, an actuator, and an electromagnet brake device. The actuator assembly is fairly compact in size and the electromagnetic brake device is a non-contact type of devices, making it less prone to w... | 08/17/2010 |
| 7768157 | Brushless motor The brushless motor includes a first permanent magnet magnetized in a direction perpendicular to the drive direction, and a electromagnetic coil wound around an axis parallel to the drive direction. The drive control circuit supplies a drive current in a given first... | 08/03/2010 |
| 7701104 | Double-excitation rotating electrical machine for adjustable defluxing The invention concerns a rotating electrical machine comprising a stator enclosing a rotor including permanent excitation magnets (20, 24, 26, 30) capable of producing magnetic fluxes, and excitation coils (22, 28), capable of being excited or not and ... | 04/20/2010 |
| 7615905 | Hybrid electric reluctance motor Hybrid electric reluctance motor, characterized by the fact of its having an arrangement with coils (8) in opposition and permanent magnets (9) in opposition and in parallel with the coils (8) in the stator and/or rotor (2); when the coil... | 11/10/2009 |
| 7476998 | Magnetic drive device A magnetic drive apparatus including a rotor with a rotor magnetic flux generator, a stator with a stator magnetic flux generator and stator magnetic paths, and a magnetic flux controller provided in intermediate positions in said stator magnetic paths for controlli... | 01/13/2009 |
| 7443069 | Stator structures Stator structures are provided. A stator structure includes at least a magnetic conductive layer and at least a first auxiliary magnetic polar layer. The magnetic conductive layer comprises a plurality of first salient poles. The first auxiliary magnetic polar layer... | 10/28/2008 |
| 7443058 | Actuator capable of reciprocal linear driving and rolling driving and power toothbrush using the same A reciprocal linear driving unit and a rolling driving unit are adjacently provided on a common single shaft in axial direction thereof, so that the reciprocal linear driving in the axial direction and the rolling driving around the axis are performed by the single ... | 10/28/2008 |
| 7414343 | Hybrid-excited rotating machine, and vehicle with the hybrid-excited rotating machine A hybrid-excited rotating machine comprising: a stator winding of a multi-phase Y-connection; a plurality of rotor magnetic poles fixed on a rotor shaft 3 at a predetermined spacing in the circumferential direction and confronting the inner circumference of s... | 08/19/2008 |
| 7385321 | Motor having shifted teeth of pressed powder construction A multi-polar rotary machine comprises a cylindrical outer rotor arranged concentrically with the stator and with an air gap therebetween. The stator has two spaced stator elements and a ring shaped permanent magnet held between the stator elements and magnetized so... | 06/10/2008 |
| 7378749 | Electrical generator system An electrical generator system includes a source for producing heated gases, a conduit connected to the source for receiving a flow of the heated gases, and a generator assembly positioned in close proximity to the conduit. The generator assembly includes a pluralit... | 05/27/2008 |
| 7358629 | Electromagnetic actuator The rotational torque of an electromagnetic actuator having a stator and rotor, such as a stepping motor, is increased. The electromagnetic actuator includes a rotor (30) having multiple magnetic poles (Nr1, Nr2, Nr3, N... | 04/15/2008 |
| 7355309 | Permanent magnet rotor for a direct drive generator or a low speed motor In order to provide a less expensive generator, a rotor using nonmagnetic beams is disclosed. The rotor includes a magnetic steel rim connected to a main generator shaft by a hub. The magnetic rim supports the components of the rotor, which includes a plurality of m... | 04/08/2008 |
| 7351385 | System for enabling landfill disposal of kitchen waste oil/grease An apparatus for conversion of kitchen waste grease to a landfill-acceptable solid includes a grease collection cartridge. A mixing baffle within the cartridge has a package with a reactant to convert grease and oil, and water into soap. The apparatus has means for ... | 04/01/2008 |
| 7342339 | Reluctance machine having a non-uniform air gap A reluctance machine includes a stator having a stator core. The stator core includes a central bore and a plurality of stator poles extending inwardly from the stator core. Each of the stator poles includes a stator pole face. The reluctance machine further include... | 03/11/2008 |
| 7339292 | Motor having shifted teeth of pressed powder construction A multi-polar rotary machine comprises a and a cylindrical outer rotor arranged concentrically with the stator and with an air gap therebetween. The stator has two splitted stator elements and a ring shaped permanent magnet held between the stator elements and magne... | 03/04/2008 |
| 7330094 | Energy producing apparatus utilizing magnetic pistons An energy producing apparatus utilizing magnetic pistons is provided. Permanent magnets of like polarity are employed within a cylinder of each piston and upon a top portion of said piston. The like polarity pistons have a natural desire to repel one another. A ferr... | 02/12/2008 |
| 7327056 | Marked hub for sensing motor speed A motor hub is disclosed. The motor hub comprises a housing for a motor. The housing is rotatable around an axis of rotation of the motor. The motor hub also has marks arranged on a surface of the housing, and spaces between the marks. The marks and spaces form a pa... | 02/05/2008 |
| 7323844 | Circuit and method for control of a stepper motor A circuit for the control of a stepper motor having a rotor configured as a permanent magnet and a stator configured of at least first and second energized excitation coils enclosing the rotor. Each end terminal of the first excitation coil is connected to the posit... | 01/29/2008 |
| 7317273 | Electromagnetic actuator and portable device having the same An electromagnetic actuator includes a cylindrical stator made of a permanent magnet and having annular end faces magnetized to plural magnetic poles, a coil securely disposed in a hollow portion of the stator via a bobbin on which the coil is wound and which is fix... | 01/08/2008 |
| 7312550 | Architecture for electric machine In one aspect, an alternator is described which includes a current control apparatus including a stator winding and a control winding, wherein current control in the control winding regulates the stator winding. In another aspect, a gas turbine engine includes a mul... | 12/25/2007 |
| 7311084 | Fuel injection system This invention provides a simple means to initiate the movement of a vehicle by utilizing a fuel injector system, which determines a length of a magnet on the flywheel or crankshaft pulley. This system enables a person to choose a speed where fuel from a fuel inject... | 12/25/2007 |
| 7301310 | Excitation controlled synchronous permanent magnet machine The present invention provides an apparatus and methods for providing constant voltage from a permanent magnet generator at varying prime mover speeds or under varying loads. A constant voltage permanent magnet generator includes a housing, a magnetized rotor, a pri... | 11/27/2007 |
| 7288923 | Voltage-limited electric machine An electric alternator having a rotor, stator and at least one winding in the stator adapted to conduct a current, the machine also having and first and second magnetic circuits around different portions of the winding which may be configured relative to one another... | 10/30/2007 |
| 7288860 | Magnetic transducer with ferrofluid end bearings An electrical generator includes one or more magnets that move relative to one or more conductors to generate an electrical signal in each conductor. Each magnet has ferrofluid bearings in the vicinity of its opposite ends to provide a low friction interface between... | 10/30/2007 |
| 7282827 | Permanent magnet motor A permanent magnet motor has permanent-magnet-holding slots 5 formed in those parts of a rotor core 2A which correspond to sides of an approximately regular polygon centered on an axis of the rotor core 2A, permanent magnets 4 inserted in... | 10/16/2007 |
