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| Number | Title | Issue Date |
| 7365466 | Rotor for an electrical motor The invention provides a rotor for an electrical motor, a tool for making a rotor core and a method of making the rotor. The rotor could be incorporated e.g. in a line-start motor and comprises a squirrel cage and magnet located in a rotor core. The magnets are, in ... | 04/29/2008 |
| 7362024 | Rotor of BLDC motor Disclosed is a rotor of a BLDC motor including a frame rotatably disposed on an inner circumference of a stator, rotor teeth connected to the outer circumference of the frame in the radial direction at regular intervals, and magnets fixed between the rotor teeth, an... | 04/22/2008 |
| 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 |
| 7205695 | High speed rotor An electromagnetic machine is provided. The machine includes a stator extending along a longitudinal axis and having an inner surface defining a rotor receipt cavity. The rotor extends along and is rotatable about the longitudinal axis within the rotor receipt cavit... | 04/17/2007 |
| 7157827 | Spoke permanent magnet rotor A spoke permanent magnet rotor that includes a shaft defining a rotor axis. A first non-magnetic end portion is coupled to the shaft and a ferromagnetic pole piece defines an aperture therethrough. A second non-magnetic end portion is positioned to dispose the pole ... | 01/02/2007 |
| 7146708 | Method of making a composite electric machine rotor assembly A method of making composite electric machine rotor assembly of a desired magnetic pattern. Magnetic segments and non-magnetic segments are separately formed to green strength, and then arranged adjacent to each other in a desired magnetic pattern. A small amount of... | 12/12/2006 |
| 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 |
| 7015617 | High speed generator with rotor coil support assemblies secured to interlamination disks A rotor for a high speed generator is constructed of a plurality of laminations and interlamination disks, which are disposed between each of the laminations. A coil support assembly is disposed within each of the rotor interpole regions and is secured to the interl... | 03/21/2006 |
| 6971152 | Method of expanding types of synchronous motors and synchronous motors produced by the method A method of expanding types of synchronous motors capable of reducing the number of required stator types to use stators in common, and a synchronous motor produced by the method. A group of stators are prepared by stacking stator cores of identical shape so that he... | 12/06/2005 |
| 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 |
| 6967420 | Electrical machine having a rotor specially adapted to high speeds An electrical rotating machine having a rotor comprising a shaft made from non-magnetic material, a plurality of pole pieces made from magnetic material and surrounding the shaft, with permanent magnets fixed in receivers by wedges cooperating with the pole pieces t... | 11/22/2005 |
| 6956312 | 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... | 10/18/2005 |
| 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 |
| 6930427 | Electric apparatus having a stator with insulated end laminations within the central opening of end plates A technique is provided for manufacturing a stator of an electrical machine, such as a motor. The stator is formed by using thin end plates or laminations that are attached to each other by rods around a group of laminations. The end plates maintain pressure on the ... | 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 |
| 6847145 | Encapsulated permanent magnet motor rotor Encapsulation of a permanent magnet rotor is achieved by applying a glass roving material to spaces in the rotor structure, applying a veil cloth around the outer surface of the rotor, mounting a vacuum bag with vacuum ports around the outer surface of the rotor, re... | 01/25/2005 |
| 6750584 | High speed rotor An electromagnetic machine is provided. The machine includes a stator extending along a longitudinal axis and having an inner surface defining a rotor receipt cavity. The rotor extends along and is rotatable about the longitudinal axis within the rotor receipt cavit... | 06/15/2004 |
| 6727628 | Rotor structure for permanent-magnet motor A rotor structure for a permanent-magnet motor is disclosed as including an annular laminated stack (2) of electromagnetic steel sheets incorporating magnets, annular end plates (1a, 1b) located at both ends of the annular laminate... | 04/27/2004 |
| 6713923 | Orientation device and magnetization device To provide an orientation device capable of efficiently orientating resinous magnets filled in slits of a rotor core. An orientation device comprising a plurality of permanent magnets 5 disposed at the same intervals as slits 2 in the rotor core... | 03/30/2004 |
| 6700288 | High speed rotor An electromagnetic machine is provided. The machine includes a stator extending along a longitudinal axis and having an inner surface defining a rotor receipt cavity. The rotor extends along and is rotatable about the longitudinal axis within the rotor re... | 03/02/2004 |
| 6426576 | Electric machine having rotor adapted for high speed A rotor for an electric machine which rotor includes a multi-faced shaft, a plurality of pole pieces and permanent magnets carried by the shaft and a plurality of the rods extending between a pair of lateral flanges and passing through the pole pieces bet... | 07/30/2002 |
| 6396182 | Motor including embedded permanent-magnet and method for making the same An electric motor including a permanent-magnet rotor having embedded magnets held in place by several segments. The embedded magnets are secured by segments including non-circular openings near their centers. Several non-magnetic, non-conductive bars exte... | 05/28/2002 |
| 5554900 | Motor including embedded permanent-magnet rotor An electric motor including a permanent-magnet rotor having embedded magnets held in place by several segments. The embedded magnets are secured by segments including non-circular openings near their centers. Several non-magnetic, non-conductive bars exte... | 09/10/1996 |
| 5463262 | Rotor for synchronous motor A rotor of a synchronous motor, according to the present invention, includes a plurality of permanent magnets 12 radially arranged around a rotating shaft 10, and a plurality of laminated core members 14 arranged around the rotating shaft 10 and holding e... | 10/31/1995 |
| 5200662 | Joint structure of radial type rotor and output shaft in synchronous motor The present invention relates to a joint structure of a rotor (12) and an output shaft (10) in a synchronous motor, the rotor having an alternate circumferential arrangement of rotor cores (16) and magnets (14). A molding resin (24) is filled and hardened... | 04/06/1993 |
| 5157297 | Structure of radial type rotor A structure of the radial type rotor for a synchronous motor having a shaft (12) comprising a magnetic material and having a rotor core (2) held by magnets (18), wherein due to the fact that the presence of the above-mentioned magnetic shaft (12) causes l... | 10/20/1992 |
| 5140211 | Rotor structure of a synchronous motor Provided is a rotor structure of a radial type synchronous motor having a rotor core (10) is held between permanent magnets (12) wherein end plates (14) are attached to ends of the rotor (8) in a direction of the central axis (6) of the rotor, each of whi... | 08/18/1992 |
| 5091668 | Motor having flux-concentrating permanent magnets A motor having flux-concentrating permanent magnets, the motor including a stator with windings and a rotor including a shaft, a sleeve surrounding the shaft for holding rotor laminations, and permanent magnets. The motor being characterized in that said ... | 02/25/1992 |
| 5039897 | Rotor structures of A.C. synchronous servo motor Provided is a rotor structure by which slot ripple is reduced so that an a.c. synchronous servo motor can achieve a smooth rotation. A rotor structure is provided in which two rotor elements (30, 30') are juxtaposed and brought out of registration in a ci... | 08/13/1991 |
| 4700096 | High speed synchronous machine having a rotor provided with magnets arranged for orthoradial magnetic induction The synchronous machine comprises a rotor provided with permanent magnets arranged for orthoradial magnetic induction and which are disposed around the axis in such a way that two adjacent magnets have counter-direction inductions, pole-pieces deviating t... | 10/13/1987 |
| 4697114 | Permanent-magnet rotor shrink-fit assembly A permanent magnet rotor assembly has a rotor shaft (11), and a plurality of yokes (12) extended along the axis of the rotor shaft at circumferential intervals around the rotor shaft. Permanent magnets (13) extended along the axis of the rotor shaft are h... | 09/29/1987 |
| 4695754 | Permanent magnet rotor for an electrical machine A rotor of an electrical machine comprising pole pieces representing laminated packs of flux-conducting lamellae, and permanent magnets directly contacting the pole terminals, gaps being provided between the flux-conducting lamellae. The gaps are provided... | 09/22/1987 |
| 4498024 | Synchronous electrodynamic machine with permanent magnets and cooled by a liquid This invention has as its object an electrodynamic machine (10) cooled by a liquid contained in a housing (12) in which is mounted a stator (14) whose inner peripheral wall (16) works with the outer peripheral wall (20) of a rotor mounted to turn in the h... | 02/05/1985 |
