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| Number | Title | Issue Date |
| 8138649 | Magnet support and retention system for hybrid rotors Disclosed is a rotor assembly for an electric machine includes a rotor core. The rotor core has at least one magnet slot with an increasing slot width as radial distance from a rotor shaft increases, and at least one slot lip extending at least partially across the ... | 03/20/2012 |
| 7888835 | Rotating shaft and motor rotor having the same A rotating shaft disclosed by the present invention includes a plurality of bumps spacedly formed along an outer circumferential surface thereof. The bumps are each formed with two engagement portions extending outwardly and bilaterally and a deformation space there... | 02/15/2011 |
| 7701100 | Synchronous motor A synchronous motor having a rotor, a magnet positioned on the rotor and a clamping element that fixes the magnet on the rotor, wherein the clamping element includes a strip arranged between the magnet and the rotor. ... | 04/20/2010 |
| 7692348 | Arrangement for fastening permanent magnets to rapidly rotating rotors of electric machines The invention is directed to an arrangement for fastening permanent magnets to rapidly rotating rotors of electric machines. It is the object of the invention to find a novel possibility for fastening permanent magnets to the rotor of rapidly rotating electric machi... | 04/06/2010 |
| 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 |
| 7339294 | Vehicular starting and charging rotary electric machine A vehicular starting and charging rotary electric machine includes a rotor, a stator, brackets, a brush, and a rotation detection sensor. The rotor has a field winding. The stator has a stator winding. The brackets supports the rotor and the stator. One end of the b... | 03/04/2008 |
| 7309938 | Rotary power converter A rotary power converter apparatus for coupling power between a prime driver and plural generators. The apparatus includes a frame having a first and second bearing aligned along an axis of rotation and a rotor assembly supported thereby. The rotor assembly includes... | 12/18/2007 |
| 7285890 | Magnet retention on rotors Permanent magnets are mounted on a rotor of an electrical motor by an apparatus that keeps an adhesive bonding layer between the magnet and rotor in compression over wide variations in temperature and speed of rotation. The mechanical stresses on the magnets are con... | 10/23/2007 |
| 7245054 | Permanent magnet electric machine having reduced cogging torque A permanent magnet electric machine includes a stator with salient stator poles. A rotor includes two or more axial rotor sections that are rotationally offset by an offset angle equal to the cogging angle divided by the number of axial rotor sections. The axial rot... | 07/17/2007 |
| 7166942 | Magneto-generator A magneto-generator includes: a plurality of magnets disposed being bonded to an inner circumferential surface of a flywheel; and a magneto coil that is disposed in the flywheel being opposed to the magnets and coaxial with the flywheel, and that generates an electr... | 01/23/2007 |
| 7154204 | Magnetic return path and permanent-magnet fixing of a rotor A rotor for an electric motor having a short-circuit element that has lamination packets in which the laminations of the short-circuit element are embodied with spring elements which press from two sides against permanent magnets of the rotor and as a result center ... | 12/26/2006 |
| 7148598 | Spoke permanent magnet rotors for electrical machines and methods of manufacturing same A rotor assembly for an electric motor includes a spoke permanent magnet rotor and a shaft connected thereto. The spoke permanent magnet rotor has an axis of rotation, permanent magnet material, and ferro-magnetic material. The permanent magnet material extends outw... | 12/12/2006 |
| 7132771 | Motor for washing machine A motor for a drum type washing machine is disclosed, wherein noise is reduced. To this end, the drum type washing machine is provided with a washing motor having a stator fitted at a rear surface of a tub and having a plurality of slots on which a coil is wound; a ... | 11/07/2006 |
| 7129611 | Method and radial gap machine for high strength undiffused brushless operation A radial gap brushless electric machine (30) having a stator (31) and a rotor (32) and a main air gap (34) also has at least one stationary excitation coil (35a, 36a) separated from the rotor (32) by a s... | 10/31/2006 |
| 7030529 | Electrical machines, especially engines excited by permanent magnets A permanent magnet-excited electric motor with a rotating rotor having permanent magnets disposed with alternating polarities in a ring around its circumference, which magnets cooperate with coils of a stator encompassing the rotor. The permanent magnets, as individ... | 04/18/2006 |
| 7012349 | Machined rotor assembly and method of making same The present invention provides a single piece machined rotor comprising a shell having an upper lip and a lower lip, with a pocket formed between the upper lip and the lower lip for mounting magnets therein. The magnets are fixed in place within the inner sidewall o... | 03/14/2006 |
| 6995489 | Electric machine An electric machine (2) comprising a rotor (4) and a stator (6) arranged coaxially therewith, at least one of said rotor (4) and stator (6) being formed of a plurality of parts and there being provided a bandage (16) holding... | 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 |
| 6963154 | Permanent magnet type electric rotating machine and hybrid electric vehicle using it A permanent magnet type electric rotating machine comprises a stator having a salient-pole concentrated winding, and a rotor disposed with a rotational gap, and having a plurality of permanent magnets arranged and fixed in a circumferential direction inside, and an ... | 11/08/2005 |
| 6960858 | Motor using permanent magnet A motor which uses a permanent magnet is provided in which output thrust is improved by increasing a magnetic saturation limit and preventing reduction in magnetic flux and generation of heat is reduced by inhibiting generation of an eddy current in a magnetic pole.... | 11/01/2005 |
| 6943474 | Brushless DC motor and method of manufacturing brushless DC motor A brushless DC motor including a stator having plural slots; and a rotor which has plural permanent magnets and is divided into three rotor blocks in a rotation axis direction, the three rotor blocks being layered so that the arrangement angles of the rotor blocks d... | 09/13/2005 |
| 6933644 | Magnetic levitation motor A magnetic levitation motor which rotates a rotor in a levitated state with respect to a stator by a direct-current magnetic field and stator windings. The magnetic levitation motor comprises: a direct-current magnetic field generating device (4) which forms ... | 08/23/2005 |
| 6911756 | Rotor core with magnets on the outer periphery of the core having a sine or trapezoidal wave A rotor for a motor includes a body formed by multiple silicon steel sheets securely abutting one another. Each silicon steel sheet has a series of apertures defined in an outer periphery thereof to define multiple grooves in an outer periphery of the body for recei... | 06/28/2005 |
| 6906441 | Spherical motor using oscillatory magnetic fields A spherical motor (10) that includes an outer field sphere (12) and an inner armature sphere (14) rotatable therein. Field magnetic elements (26) are disposed on the field sphere (12) and sensor/actuator magnetic elements (42 | 06/14/2005 |
| 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 |
| 6844646 | Electric motor An electric motor including a rotor with a generally cylindrical rotor wall and a plurality of magnetic field producing elements mounted on an inside surface of the rotor wall, the rotor being mounted for rotation around a central stator, wherein the magnetic field ... | 01/18/2005 |
| 6803696 | Magnet motor device The present invention relates generally to a magnet motor, and having being provided the driven power of the electromagnet motor for electric vehicles, wherein, it has provided with a wireless coil whole rotator, which the upper part has been constructed with an equ... | 10/12/2004 |
| 6741010 | Rotor disc assembly having rotor rim with alternate magnets and laminated pole pieces A rotor disc (14), for use in an electrical machine (10), has at least one circumferential rotor rim (16) mounted thereon. The rotor rim (16) comprises at least one row of alternate magnets (20) and laminated pole pieces (18... | 05/25/2004 |
| 6717324 | Magnet motor device The present invention relates generally to a magnet motor, and having being provided the driven power of the electromagnet motor for electric vehicles, wherein, it has provided with a wireless coil whole rotator, which the upper part has been constructed with an equ... | 04/06/2004 |
| 6703741 | Permanent magnet rotor portion for electric machines A rotor for an electric machine comprising a plurality of independent poles (58) having a triangular cross section shape and permanent magnets (56) having a trapezoidal cross section shape. The shapes of the independent poles and permanent magnets coopera... | 03/09/2004 |
| 6570288 | Outer rotor type brushless direct current motor An outer rotor type brushless direct current motor has an outer rotor including a plurality of permanent magnets attached along the inner circumference of an annular yoke such that the magnetic poles face the S magnetic poles. Thin sections are formed by ... | 05/27/2003 |
| 6548932 | Nonmagnetic magnet retention channel arrangement for high speed rotors In the magnet retention channel arrangement for a high speed rotor described in the specification, a rotor has an array of radially projecting, angularly spaced pole pieces and a magnet retention channel member inserted between each adjacent pair of pole ... | 04/15/2003 |
| 6509664 | Hybrid synchronous machines comprising permanent magnets and excitation windings in cylindrical element slots A hybrid synchronous machine includes a cylindrical element having slots; excitation windings situated in at least some of the slots; and permanent magnets situated in at least some of the slots, the permanent magnets comprising radially magnetized perman... | 01/21/2003 |
| 6433453 | Revolving speed increasing apparatus A revolving speed increasing apparatus in which the repulsion of the magnets acts effectively only in the rotational direction to increase the revolving speed by the magnets. A rotary plate, fixed to a rotary shaft so as to integrally rotate, and a fixed ... | 08/13/2002 |
| 6376956 | Permanent magnet pole arrangement of motor A pole arrangement of a motor includes a plurality of permanent-magnet main poles disposed annularly at equal intervals on the inner periphery of a yoke, a plurality of auxiliary poles disposed between adjacent two of the main poles, and a plurality of ma... | 04/23/2002 |
| 6046523 | Computer controlled electric motor and method therefor A section of the rotor of an electric motor includes a Neodymium plastic bonded magnetic material annulus having a plurality of permanent magnets having magnetic poles alternately disposed thereon and pressed onto the periphery of a plastic disc. The annu... | 04/04/2000 |
| 6013963 | High efficiency electro-mechanical energy conversion device An Electro-Mechanical Energy Conversion (EMEC) device and a method of electro-magnetically converting electrical energy to mechanical energy and electrical energy. The EMEC device comprises a stator; a rotor; a direct current power source; a commutator, a... | 01/11/2000 |
| 5998902 | Magnet ring assembly for an electrical generator A magnet rotor assembly is provided with a nonmagnetic ring, which can be made of an elastomeric material, which has at least one locating protrusion extending radially outward from a first surface of the ring. It also comprises at least one locking protr... | 12/07/1999 |
| 5952755 | Permanent magnet motor rotor A permanent magnet motor rotor arrangement including a rotor core having radial and angular positioning surfaces provides for inexpensive and precise positional control of rotor components.... | 09/14/1999 |
| 5936322 | Permanent magnet type synchronous motor A permanent magnet type synchronous motor has a stator having teeth that are circumferentially aligned, and a rotor disposed radially inward of the stator. The rotor is made up of permanent magnets facing the teeth and mounted on a rotor core having protr... | 08/10/1999 |
