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| Number | Title | Issue Date |
| 8181333 | Method of manufacturing squirrel-cage rotor A method of manufacturing a squirrel-cage rotor includes: providing a laminated stack; attaching a plurality of rotor bars to the laminated stack, wherein the plurality of rotor bars each include opposite longitudinal ends; and die-casting a pair of end rings at the... | 05/22/2012 |
| 8151439 | Method for mounting a magnetic pole and associated rotor The present invention provides a method for mounting at least one magnetic pole of a rotor of a motor of a synchronous electrical rotating machine from elementary elements, the rotor including a hub. The method includes the following successive steps: forming the se... | 04/10/2012 |
| 8146234 | Method for realising a permanent-magnet rotor for a synchronous motor A method for obtaining, in a quick way, a strong, compact and waterproof permanent-magnet rotor (3), intended for a synchronous motor (1), particularly for pumps of washing machines for industrial and domestic use and the like, of the external stator (... | 04/03/2012 |
| 8141233 | Method for manufacturing a lamination for electric motor rotor A method for manufacturing a lamination for electro motor rotors that have skew or helical slots by forming at least one boss on a face of the lamination and reducing a thickness of a first portion of the boss. The reduction in thickness may be by carrying out a loc... | 03/27/2012 |
| 8141234 | Optimal magnetization of non-magnetized permanent magnet segments in electrical machines A method for magnetizing a rotor of an electrical machine is provided. The method includes assembling an array of non-magnetized anisotropic permanent magnet segments around a rotor spindle encased in a metallic ring. The method also includes determining multiple op... | 03/27/2012 |
| 8127431 | Method of resin sealing permanent magnets in laminated rotor core A method comprising: a first process of placing a laminated rotor core in a preheating device to preheat the laminated core; a second process of removing the preheated laminated core from the preheating device and disposing the laminated core between upper and lower... | 03/06/2012 |
| 8104164 | Method of manufacturing a rotor of electric rotating machine A manufacturing method of a rotor of and AC generator for a vehicle according to the invention includes the steps of applying a fluid resin material to a conductor immediately before the conductor is wound on a spool, and heating the entire structure to cause the re... | 01/31/2012 |
| 8079133 | Method for the production of a rotor winding for an electric machine The invention relates to a method for producing the rotor winding of an electric machine comprising at least four exciter poles in the stator and a commutator rotor with a number of pole teeth which deviates from the number of exciter poles as well as a number of in... | 12/20/2011 |
| 8074344 | Method of manufacturing rotor holder The manufacturing method of a rotor holder according to the present invention includes a step in which a top plate portion having a substantially discoid shape substantially centered about a central axis, and a side wall portion extending from an outer circumferenti... | 12/13/2011 |
| 8069552 | Method of manufacturing rotor magnet for micro rotary electric machine A method of manufacturing a rotor magnet for a micro rotary electric machine is provided which includes steps of: a process in which a plurality of thick films, each of which is made of nanocomposite texture composed of αFe and R-TM-B where R is either 10 to 20 ato... | 12/06/2011 |
| 8042257 | Method for manufacturing a stator core for an axial air-gap electronic motor There is provided a method for manufacturing a stator core for an axial air-gap electronic motor, in which core sheets are laminatedly fixed while being shifted with predetermined intervals. The method includes a step in which first side surfaces in the circumferent... | 10/25/2011 |
| 8033007 | Method of making rotor of brushless motor Some embodiments of the present disclosure provide a method of making a rotor of an electric brushless motor configured to be light weight and prevent vibrations generated during an operation of the motor to be transferred to the shaft of the rotor. The method inclu... | 10/11/2011 |
| 8030821 | Generator rotor with improved hollow shaft A generator rotor shaft includes a shaft body extending through a first axial distance, and being hollow. Spline teeth are formed in an inner bore of the hollow shaft body. The ratio of a distance from one end of the hollow body to a remote axial end of the spline t... | 10/04/2011 |
| 8020280 | Rotor manufacturing method An object is to provide a rotor manufacturing method capable of reducing a rotor unbalance amount by controlling a magnet arrangement position in a rotor core and improving work efficiency when fixing a magnet to the rotor core by using resin. A lower surface of a r... | 09/20/2011 |
| 7966717 | Rotor pole crossover connection A rotor pole crossover connection joint for use in a rotating electrical machine is disclosed. The connection joint integrally couples a bottom rotor coil strap to a rotor pole crossover connector with a single piece connector that reduces, distributes or otherwise ... | 06/28/2011 |
| 7958621 | Method of manufacturing a rotor for a rotating electrical machine A method of manufacturing a rotor for a rotating electrical machine includes the steps of: preparing a first and a second pole core, a rotary shaft, and a field coil; press-fitting the rotary shaft into a through-hole of the first pole core so that the axes of the r... | 06/14/2011 |
| 7950133 | Method of resin sealing permanent magnets in laminated rotor core A method comprising: a first process of placing a laminated rotor core in a preheating device to preheat the laminated core; a second process of removing the preheated laminated core from the preheating device and disposing the laminated core between upper and lower... | 05/31/2011 |
| 7908737 | Production method of fluid dynamic-pressure bearing in spindle motor A gas is fed, so as to cause a gas flow to occur from a lower opening of a bearing hole of a sleeve 6 in an outward direction of an annular portion 12a of a rotor hub 12 via a radial gap 50 and an upper opening of the bearing hole,... | 03/22/2011 |
| 7895729 | Process for mounting magnets in an electric motor rotor A process for mounting magnets in an electric motor rotor and an electric motor rotor, said rotor comprising: a lamination stack (10) provided with a plurality of axial channels (12) disposed around a central axial bore (11) and housing permanen... | 03/01/2011 |
| 7854056 | Production method of a rotor The present invention has an object to propose a method of producing a rotor, capable of reliably fixing a magnet to a rotor core with resin and preventing breakage of the rotor core. The present invention includes a step of fixing a permanent magnet to a rotor core... | 12/21/2010 |
| 7836576 | Method for converting a commutator exciter into a brushless exciter A method is disclosed for converting a commutator exciter, also called to as a DC machine, into a brushless exciter while keeping one part of the rotor as well as the stator frame of the DC machine. In an embodiment, the method also keeps the field currents and the ... | 11/23/2010 |
| 7818873 | Method for making a coil for a rotating electrical machine rotor A method is provided for making an excitation coil (22) of a rotor (1) of a rotating electrical machine. The method includes a step of winding at least one electrical conductor element (30), the winding forming, in superimposed layers, a horizon... | 10/26/2010 |
| 7797815 | Control of a dual rotor electromagnetic machine The invention relates to an electric synchronous machine. There is a need for a dual rotor electric synchronous machine which has a mechanism for adjusting the rotor relative angular displacement while the machine is running in order to reduce back EMF. There is a n... | 09/21/2010 |
| 7788792 | Method of fabricating rotor assemblies having chemically bonded lamination stacks A rotor assembly or other rotating device having a stack of laminations or laminates that are chemically bonded together. Chemical bond of the laminates may have a strength that approaches the strength of the material of metal laminates. Chemical bonds may be effect... | 09/07/2010 |
| 7784168 | Magnet protection mechanism for magnet body in rotor and magnet protection method A magnet covering member made of a soft steel plate covers an outer surface of a magnetized permanent magnet placed in a rotor core of a rotor. The magnet covering member is detached from the permanent magnet when the rotor is incorporated into a stator of an altern... | 08/31/2010 |
| 7761976 | Method for mounting magnet elements on a rotor for use in a permanent magnet motor The present invention relates to a method for mounting magnet elements on the surface of a rotor for use in a permanent magnet motor. The method comprises the steps of : providing a first tube like element, wherein said first tube like element has an inner diameter ... | 07/27/2010 |
| 7743484 | Rotor shaft and method of manufacturing the same Disclosed is a method of manufacturing a rotor shaft including a rotor and a shaft having a groove formed on a periphery to open radially outwardly, the rotor being fixed to the shaft through a caulking plate disposed on the periphery of the shaft and adjacent the r... | 06/29/2010 |
| 7743483 | Method of manufacturing a stator in a rotating electric machine A method of manufacturing a stator in a rotating electric machine. In this method, each slot has a slot peripheral wall and a slot opening, covered with an insulation coating made of an electrical insulation material. The slot peripheral wall SW has a slot bottom wa... | 06/29/2010 |
| 7726007 | Method of manufacturing stator winding of rotary electric machine A method of manufacturing a winding includes steps of twisting U-shaped conductor segments, inserting straight portions of the twisted conductor segments in slots of a stator core, bending ends of the straight portions in a circumferential direction of the stator co... | 06/01/2010 |
| 7676902 | Manufacturing method of rotor core In order to realize a method of forming a rotor core that improves the productivity and enhances the product accuracy, a forming method of a rotor that is equipped with both permanent-magnet fastener on the inner perimetric end of the magnetic pole claw of the rotor... | 03/16/2010 |
| 7673380 | Methods for making rotors for permanent magnet motors A method for making a rotor for a permanent magnet motor, the method, in at least certain aspects, including connecting a series of a plurality of guides to a hollow rotor body, the guides spaced-apart and extending longitudinally of the rotor body, the rotor body b... | 03/09/2010 |
| 7661185 | Method for assembling rotor of permanent magnet motor Apparatus and method for assembling a permanent magnet rotor comprising a rotor fixture configured to slide over a smaller diameter bearing section of the rotor and abutting one end of a center axial section of the rotor and a split compression ring having an inner ... | 02/16/2010 |
| 7603760 | Method for producing a helical stator In a method or system for producing a helical stator, a stator core strip is provided having a base portion with spaced tangs extending from the base portion. The strip is driven in a feed direction toward a bending region. At the bending region the strip is bent wi... | 10/20/2009 |
| 7565731 | Methods of manufacturing a rotor assembly A method for manufacturing a rotor assembly. The method includes providing a stub shaft having a first part and a second part, providing a magnet between the first part and the second part, and compressing the magnet between the first part and the second part using ... | 07/28/2009 |
| 7555825 | Systems, devices, and/or methods for balancing a rotating electric device Certain exemplary embodiments provide a rotating machine assembly comprising a rotor machine assembly including a shaft, a plurality of laminations shrink fit around the circumference of the shaft, and weights affixed therebetween the laminations for balancing the r... | 07/07/2009 |
| 7546674 | Method of rotor assembly without the hub A method of assembling a rotor assembly is provided, without the use of a rotor steel hub. The method comprises forming first, second and third lamination stacks by stacking individual rotor laminations together. The first, second and third lamination stacks are cas... | 06/16/2009 |
| 7484290 | Methods and system to facilitate installation and removal of a generator rotor assembly A method of installing a rotor assembly in a generator stator including a central bore is provided. The method includes coupling at least one of a first rotor section and a second rotor section of the rotor assembly to a conveyor such that at least a portion of the ... | 02/03/2009 |
| 7480977 | Method of replacing slot armor and slot liners in a generator rotor A method of replacing slot armor and slot liners in radial slots of generator rotors comprising: (a) removing a winding from respective radial slots in the generator rotor; (b) removing existing slot armors and slot liners from each of the radial slots in the genera... | 01/27/2009 |
| 7467456 | Method of arranging a resolver A method of arranging a resolver comprises the steps of: a, setting stator magnetic poles number of the resolver Ns as a number being in integral multiples (t) of a phase number q; b, figuring out rotor magnetic pole number Nr based on a formul... | 12/23/2008 |
| 7461443 | Method relating to a threaded inner sleeve for generator magnet An inner sleeve, having threads on each end, is formed on a motor or generator rotor. A pair of stub shafts are threadably attached to the inner sleeve at each end and a magnet is placed in between. The stub shafts are turned on the inner sleeve to bring them togeth... | 12/09/2008 |
