Patents
Patents for H02K 21 - Synchronous motors having permanent magnet; Synchronous generators having permanent magnet (17,141)
02/1999
02/04/1999WO1999005772A1 One way interactive electric motors
02/04/1999WO1999005769A1 Claw pole motor
02/03/1999EP0895337A1 Method for diversifying synchronous motor and synchronous motor manufactured by the same
02/03/1999EP0801837A4 Light weight genset
02/03/1999CN2306608Y Vehicle wheel axle electric generator
02/02/1999US5867346 Disk driving spindle motor
02/02/1999US5866961 Motor structure
01/1999
01/27/1999EP0893874A1 Homopolar induction generator
01/27/1999EP0893873A1 Method of securing magnets of revolving electric machine
01/27/1999EP0607320A4 Fluid pump with magnetically levitated impeller.
01/27/1999CN1206237A AC power generator with two matched magnetic wheels
01/27/1999CN1206236A Method of securing magnets of revolving electric machine
01/26/1999US5864443 Disk storage device having a detachable coupling ring in the hub
01/26/1999US5864197 Synchronous machine
01/26/1999US5864191 Efficient permanent magnet rotor for brushless motor
01/26/1999US5862686 Drive device for a front-loading washing machine
01/21/1999WO1999003187A1 Synchronous alternator for use in a wind power plant and wind power plant
01/21/1999DE19729034A1 Synchrongenerator zum Einsatz bei Windenergieanlagen sowie Windenergieanlage Synchronous generator for use in wind turbines and wind turbine
01/19/1999US5861696 Methods and apparatus for improved DC motors and magnetic clutches
01/19/1999US5861693 Permanent magnet having high bhmax (b=magnetic flux density, h=magnetic coercive force) with duplex structure: inner layer cobalt-iron-yttrium and outer layer iron-neodymium-boron; energy efficiency
01/19/1999US5861690 Electric machine
01/19/1999US5861604 Arc welder and method providing use-enhancing features
01/14/1999WO1999001849A1 Vibrational transducer
01/14/1999DE19726351A1 Magnetgelagerter elektrischer Antrieb mit integriertem Wicklungssystem Magnetic bearing mounted electric motor with integrated winding system
01/14/1999CA2294587A1 Vibrational transducer
01/13/1999EP0891032A2 Motor
01/13/1999EP0368930B2 A motor or alternator
01/13/1999CN1204885A Method for controlling continuous rotation miniature motor
01/13/1999CN1204884A Device for starting and power generation for vehicle
01/13/1999CN1204880A Stator core and wire winding method for the same
01/12/1999US5859487 Stator structure of motor and its forming method
01/12/1999US5859486 Rotary motor and production method thereof, and laminated core and production method thereof
01/12/1999US5857762 Bicycle lighting system and generator
01/07/1999EP0888665A1 Method of fabricating a rotor for a motor and the rotor produced thereby
01/07/1999EP0888663A2 Turbomachine, especially for a domestic appliance
01/07/1999EP0818077A4 Hybrid alternator
01/07/1999DE19726424A1 Level multiple circuit with compensation for permanent magnet internal pole generator
01/07/1999DE19726352A1 Magnetgelagerter elektrischer Antrieb mit konzentrierten Wicklungen Magnetic bearing mounted electric drive with concentrated windings
12/1998
12/30/1998WO1998059407A1 Electric drive mechanism with a magnetic bearing
12/30/1998WO1998059406A1 Magnetic bearing electric drive mechanism
12/30/1998EP0887913A2 Method to control a micromotor at constant speed
12/30/1998EP0887911A1 Rotary electrical machines
12/30/1998CN1203476A Transverse radiation electric machine
12/29/1998US5854526 Three-phase permanent-magnet electric rotating machine
12/29/1998US5854521 Multi-phase transverse magnetic flux machine
12/24/1998DE19725525A1 Electronic commutator motor
12/23/1998EP0829129B1 Electromagnetic actuator magnetically locked into two or more stable positions
12/22/1998US5852335 Stator structure for rotary electric machine
12/22/1998US5850733 Gaseous fuel compression and control system and method
12/17/1998DE19715690A1 Electrical power generator for low rotational speed
12/16/1998EP0884823A1 Electromagnetical drive apparatus with moving permanent magnet
12/16/1998EP0884237A1 Bicycle generator
12/16/1998EP0883925A1 Flywheel energy accumulator
12/16/1998CN1202282A Motor
12/15/1998US5850318 Disc drive data storage system
12/10/1998DE19723810A1 Resonance circuit with compensation for simultaneous use as generator stator circuit and motor stimulation circuit
12/09/1998EP0882427A1 Ultrasonic imaging device having a bearingless rotating mirror
12/08/1998US5847485 For driving a memory apparatus
12/08/1998US5847483 Pulse generator
12/08/1998US5847482 Electromagnetic motor
12/08/1998US5847476 Audible noise reduction in a disc drive
12/03/1998WO1998054463A1 Permanent magnet generator
12/02/1998EP0881757A1 Rotating synchronous machine featuring an excitation device
12/01/1998US5844344 DC brushless motor having auxiliary salient poles
12/01/1998US5844341 Electromagnetic machine with at least one pair of concentric rings having modularized magnets and yokes
12/01/1998US5844338 For automotive applications
11/1998
11/26/1998WO1998053544A1 Electric generator for wind power engine
11/25/1998EP0879496A2 Energy storage flywheel apparatus and methods
11/24/1998US5841208 Motor capable of generating an electric signal having a particular and precise frequency and a rotary magnetic head apparatus using the same
11/19/1998WO1998052271A1 Magnetic bearing coupled with an electric motor
11/19/1998WO1998037611A3 Rotor assembly for a rotating machine
11/17/1998US5838086 Synchronous motor with permanent magnets included in a rotor
11/17/1998US5838085 Versatile AC dynamo-electric machine
11/17/1998US5838082 Superconducting bearing device
11/11/1998EP0876703A1 Axial pole motor
11/11/1998EP0876702A1 Integrated magnetic levitation and rotation system
11/10/1998US5834875 Multiphase electric machine with prefabricated conductor lanes
11/10/1998US5834874 Alternator with mechanically adjustable output
11/10/1998US5834873 Brushless three-phase dc motor
11/10/1998US5834868 Spindle motor
11/10/1998US5834866 Motor structure
11/03/1998US5831366 Permanent magnet alternator
11/03/1998US5831363 Scanner motor
11/03/1998US5831355 Method for manufacturing a spindle motor
10/1998
10/29/1998WO1998048502A1 Improved electrical machine with double excitation
10/27/1998US5828145 Bicycle generator-containing hub and a lighting apparatus using the hub
10/22/1998WO1998047217A1 Lightweight rotor and stator with multiple coil windings in thermal contact
10/22/1998WO1998047216A1 Brushless polyphase transformer, in particular motor vehicle alternator
10/22/1998WO1998026495A3 Motor/generator
10/21/1998EP0872946A1 Polyphase brushless machine, especially automobile vehicle alternator
10/21/1998EP0872943A1 Permanent-magnet revolving electrodynamic machine with a concentrated stator winding
10/20/1998US5825586 Disk drive motor having a drive pin assembly which facilitates stabilized chucking of a disk
10/20/1998US5825116 AC generator for vehicle having combined structure of field coil and permanent magnet
10/20/1998US5825115 Electric motor and indicating mechanism, in particular for indicating instruments in motor vehicles
10/20/1998US5825113 Doubly salient permanent magnet machine with field weakening (or boosting) capability
10/20/1998US5825112 Doubly salient motor with stationary permanent magnets
10/20/1998US5825108 Brushless electric motor, particularly for direct driving of a washing machine
10/20/1998US5825106 Bi-directional biphase electromechanic transducer having multipolor magnets
10/20/1998US5822839 Method for making a micromotor in a ceramic substrate
10/15/1998WO1998045927A1 Unilateral transverse flux machine with a multi-strand design