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| Number | Title | Issue Date |
| 8179015 | Dynamoelectric machine An interfitting groove is disposed in a bottom portion of a trough portion so as to have a groove direction that is axial and so as to extend axially outward from axially inside, and a rotation arresting portion housing recess portion is recessed into an axially inn... | 05/15/2012 |
| 8148873 | Rotor for a rotary electrical machine comprising grooves for magnets A rotor for an electrical machine that comprises two parallel magnet wheels, each of which comprises axial teeth so that each tooth on a wheel is situated in the space existing between two consecutive teeth on the other wheel, and that comprises magnetic elements, e... | 04/03/2012 |
| 8067874 | Motor apparatus including Lundell motor having Lundell-type rotor A Lundell motor apparatus controls a field current passed to a rotor field coil and an armature stator coil current to generate a required torque. When the field current is If, the armature current is Ia, a d-axis inductance is Ld, a q-axis inductance is Lq, a q-axi... | 11/29/2011 |
| 8035273 | Rotor assembly having two core portions each with a reduced back portion A rotor for an electric machine having a number of poles includes a shaft that extends along a portion of an axis and defines an outer surface. A first core portion is formed as a single inseparable component and includes a first portion that extends from the outer ... | 10/11/2011 |
| 8008834 | Toothed-rotor shaft, toothed rotor equipped with such a shaft and rotary electrical machine equipped with such a rotor The claw-pole-rotor shaft has a front end with a radially larger-sized section, two knurled regions known as crimping regions, intended to be assembled with the claw-pole rotor by local deformation of the material of the claw-pole rotor, and a centring region for ce... | 08/30/2011 |
| 8004144 | Rotor for automotive alternator having mechanism for positioning magnetic pole cores A rotor for an automotive alternator includes a rotary shaft, first and second magnetic pole cores each having a plurality of magnetic pole claws, a bobbin, a field coil, a plurality of permanent magnets, and a positioning mechanism. The magnetic pole claws of the f... | 08/23/2011 |
| 7994684 | Automotive alternating-current generator An automotive generator that includes a Lundell rotor. First and second protruding portions are disposed so as to project from inner wall surfaces of portions of first and second yoke portions at root portions of first and second claw-shaped magnetic pole portions, ... | 08/09/2011 |
| 7982358 | High efficiency alternator bobbin A rotor assembly is disclosed for use with an alternator. The rotor assembly includes a bobbin assembly, a claw pole assembly having an integrated hub on which the bobbin assembly is positioned, a shaft that is received in the claw pole assembly, and a slipring asse... | 07/19/2011 |
| 7977847 | Vehicle alternator The vehicle alternator comprises a rotor. The rotor comprises a first pole core 12, a second pole core 14, a field coil 13, and holders 15 each containing a magnet 16 and disposed between a first claw 123 and a second claw | 07/12/2011 |
| 7977846 | Rotor for vehicular alternating current generator A rotor for a vehicular alternating current generator has a relief space portion formed between axial holes of a pair of pole cores and a shaft for receiving therein a plastically deformed portion produced when the shaft is press-fitted in the axial holes of the pol... | 07/12/2011 |
| 7969061 | Method for producing a rotor comprising a step of machining grooves in the teeth of the poles, and rotor obtained by said method A method for producing a claw-pole rotor, including: a step of mounting polar wheels on the shaft in such a way that each tooth of a polar wheel is located in the existing space between two consecutive teeth of the other polar wheel; a step of machining the lateral ... | 06/28/2011 |
| 7919900 | Motor apparatus including Lundell motor having Lundell-type rotor The Lundell motor apparatus includes a controller for controlling a field current passed to a field coil of a Lundell-type rotor of a motor and an armature current passed to a stator coil of the motor in order to generate a required torque. When the field current is... | 04/05/2011 |
| 7915783 | Brushless alternator with claw pole rotor It is designed for accumulator batteries charging and for electrical energy generating with rectified voltage for movable and unmovable vehicles and/or objects. It possesses two identical mirror-image disposed rotor 2 and 2a and excitatio... | 03/29/2011 |
| 7893594 | Alternating-current dynamo-electric machine An alternating-current dynamoelectric machine according to the present invention includes: a stator including: a stator core in which slots that extend in an axial direction are formed on an inner side; and a stator winding that is mounted to the stator core by wind... | 02/22/2011 |
| 7884524 | Brushless alternator Provided is a brushless alternator for preventing water from penetrating further inside through a gap between a distal end portion of a spool and a concave portion of a bracket. According to the brushless alternator of the present invention, a rotor includes: a roto... | 02/08/2011 |
| 7876019 | Electrical devices with reduced flux leakage using permanent magnet components A device for generating electrical or mechanical output, comprising a stator coil, a stator assembly, a rotor coil, a rotor assembly rotational about an axis, the rotor assembly at least partially surrounding the rotor coil, rotator extensions capable of induced mag... | 01/25/2011 |
| 7868513 | Vehicle A.C. generator A vehicle A.C. generator has a rotor. The rotor has a pair of pole cores and magnet holders. Each pole core has a plurality of claw-like magnet poles. Each magnet holder contains a permanent magnet and placed between the adjacent claw-like magnet poles in order to p... | 01/11/2011 |
| 7863797 | Electrical devices using electromagnetic rotors An electrical machine comprises a rotor assembly comprising a first set and a second set of rotor extensions, and a stator assembly comprising a first set and a second set of stator extensions. Rotating the rotor assembly about an axis alternates the rotor assembly ... | 01/04/2011 |
| 7843107 | Dynamoelectric machine A dynamoelectric machine including first and second permanent magnets held by first and second magnet seats on first and second yoke portions so as to face inner circumferential surfaces of tip end portions of first and second claw-shaped magnetic pole portions. The... | 11/30/2010 |
| 7834511 | Claw pole generator and closure body for a claw pole generator The invention relates to a claw pole generator comprising a claw pole rotor, two magnet wheel halves (21, 23) which are mounted on a drive shaft (15) and are provided with claw-shaped magnet poles (22, 24) that mesh with each other, and an annul... | 11/16/2010 |
| 7834512 | Automotive alternator including annular core having protrusions and recesses alternately formed on its outer surface An automotive alternator is disclosed which includes an annular core disposed to surround the radially outer peripheries of all magnetic pole claws of magnetic pole cores. The annular core has, on an outer surface thereof, a plurality of protrusions, a plurality of ... | 11/16/2010 |
| 7795777 | Dynamoelectric rotor Each of first and second pole cores has a boss portion, six core flange portions; and six claw-shaped magnetic pole portions, the first and second pole cores being disposed such that the claw-shaped magnetic pole portions face each other so as to intermesh and leadi... | 09/14/2010 |
| 7781934 | Alternating-current dynamo-electric machine An alternating-current dynamoelectric machine according to the present invention includes: a stator including: a stator core in which slots that extend in an axial direction are formed on an inner side; and a stator winding that is mounted to the stator core by wind... | 08/24/2010 |
| 7759838 | Coil support for rotating electrical machine Disclosed is a coil support for an electrical machine including a shank having a first outer diameter configured to support a field coil of the electrical machine and a base located at one end of the shank. The base has a second outer diameter greater than the first... | 07/20/2010 |
| 7755249 | Alternator with rotor for vehicle An alternator has a rotor rotated on its own axis to generate electric power in a stator. The rotor has pole cores with claw portions arranged along the circumferential direction, and a holder unit is disposed between two adjacent claw portions in each pair. Each ho... | 07/13/2010 |
| 7737602 | Rotating electrical machine or alternator and method of manufacturing rotor core used in the same A rotor core which has relatively high rigidity, can ensure sufficient magnetic performance, and can be produced at a cheaper cost with a relatively small-scale facility. A claw-equipped core and a yoke are manufactured separately. After fitting the yoke to a fittin... | 06/15/2010 |
| 7679259 | Claw-pole rotor for an electrical machine A claw-pole rotor for an electrical machine, in particular a rotary current generator, having two pole wheels (26, 27), which each carry claw poles (28 and 29, respectively), which each originate in a plate region (50) and have a pole roo... | 03/16/2010 |
| 7671508 | Automotive alternator having improved structure for effectively cooling field coil According to the present invention, an alternator includes a rotor, a stator, and at least one cooling fan. The rotor includes a rotary shaft, a field core, and a field coil. The field coil has first and second ends that are opposite to each other in an axial direct... | 03/02/2010 |
| 7656069 | Dynamoelectric machine First and second magnet holding apertures are disposed through first and second permanent magnet holding seats that are disposed so as to protrude from first and second yoke portions so as to have aperture centers that are oriented in an axial direction. Cylindrical... | 02/02/2010 |
| 7656068 | Dynamoelectric rotor Each of first and second pole cores has a boss portion, six core flange portions; and six claw-shaped magnetic pole portions, the first and second pole cores being disposed such that the claw-shaped magnetic pole portions face each other so as to intermesh and leadi... | 02/02/2010 |
| 7642690 | Automotive tandem alternator having high efficiency and improved arrangement of regulator According to the invention, a tandem alternator includes a rotary shaft, a first and a second power generation unit that are arranged in tandem in the axial direction of the rotary shaft, a housing, a slip ring-brush mechanism provided around a rear end portion of t... | 01/05/2010 |
| 7642691 | Dynamoelectric machine Resin pooling grooves are disposed so as to extend over entire regions in a thickness direction of a first magnet holder on two sides of a bottom surface in a width direction of a first receiving groove, and resin pooling grooves are also disposed so as to extend ov... | 01/05/2010 |
| 7608973 | Dynamoelectric rotor A resin bobbin is mounted to a pole core by fitting a body portion thereof over first and second boss portions. A rotor coil is configured by winding a conducting wire onto the bobbin, and an output wire of the conducting wire that is led out from the wound portion ... | 10/27/2009 |
| 7605519 | Dynamoelectric machine A magnet seat is disposed on a second yoke portion and projects into respective spaces between circumferentially-adjacent pairs of second claw-shaped magnetic pole portions, and permanent magnets are disposed only near the second yoke portion so as to be held by the... | 10/20/2009 |
| 7605518 | Rotary electric machine for vehicles An on-vehicle rotary electric machine, such as AC generator, is provided. The machine comprises a rotary shaft, a pole core, plural magnetic poles, plural permanent magnets, and plural holding members. The magnetic poles are located at intervals in a circumferential... | 10/20/2009 |
| 7602095 | Automotive tandem alternator having reduced axial length and capable of effectively suppressing magnetic leakage According to the invention, a tandem alternator includes a rotary shaft, a first and a second field arranged in tandem on the rotary shaft, and a first and a second armature arranged in tandem in the axial direction of the rotary shaft. The first armature is provide... | 10/13/2009 |
| 7592735 | Alternator having Lundell type rotor A Lundell type rotor of an alternator has a pole core disposed on an outer side of a field coil in a radial direction of the rotor, and a non-magnetic claw pole joint ring. The pole core has claw poles disposed along a circumferential direction of the rotor at prede... | 09/22/2009 |
| 7589449 | Electric rotating machine The electric rotating machine includes a rotor and an armature. The rotor consists of a cylindrical part having a field winding and a claw-pole shaped magnetic pole part. A magnetic short-circuit mechanism is disposed between the magnetic pole parts adjacent each ot... | 09/15/2009 |
| 7583005 | Electric machine rotor pole piece with anti coil rotation The apparatus disclosed herein relates to a pole piece for an electric machine comprising, a pole piece with a finger support structure, a plurality of fingers having an axial component of extension relative to the finger support structure, a coil contact surface an... | 09/01/2009 |
| 7573175 | Tandem AC generator for vehicle In a tandem AC generator for a vehicle having dual armature core-Lundel type field core pairs placed in series, an intermediate ring as a cylindrical spacer is placed between the dual armature cores. One armature core, the intermediate ring, and the other armature c... | 08/11/2009 |
