Patents
Patents for H02K 29 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes, semiconductor devices (10,091)
05/1989
05/03/1989EP0313764A2 Energy conversion device
04/1989
04/26/1989EP0313046A1 Motor control apparatus
04/25/1989US4825114 Assembly of axial fan motor
04/19/1989EP0311688A1 Starter/charger of engine
04/18/1989US4823034 Brushless DC motor with tolerance compensation spring
04/11/1989US4820951 Multiphase small size brushless DC motor
04/11/1989US4820949 Electrically powered apparatus
04/06/1989DE3831551A1 Printed circuit board
04/05/1989EP0310426A2 Turbocharger with rotary electric machine
04/05/1989EP0310035A2 A stator for use in a brushless motor
04/04/1989US4818922 Optical commutation for permanent magnet motors
04/04/1989US4818908 Brushless motor having phase advance
04/04/1989US4818907 Brushless motor for driving magnetic disks
04/04/1989US4818905 Slotless and toothless wound stators
04/04/1989CA1252143A1 Motor-compressor unit
03/1989
03/30/1989DE3730640A1 Method for producing an external rotor motor having a printed circuit board which is connected to the winding ends of the stator winding
03/29/1989EP0308577A2 12-step commutation device for an electric motor
03/29/1989CN2035155U Light-operated current-commutating brushless dc motor
03/23/1989WO1989002671A1 A motor or alternator
03/23/1989WO1989002670A1 Armature for dc motor
03/22/1989EP0307706A1 Array of permanent magnets
03/21/1989US4814676 Self-starting brushless D.C. motor
03/21/1989US4814652 Disk drive motor with thermally matched parts
03/21/1989US4813248 Drives for clothes washing machines
03/15/1989CN2034346U Electromagnetic energy-saving spinner
03/14/1989US4812692 Motor
03/08/1989EP0305480A1 In-spindle motor assembly for disk drive and method for fabricating the same.
03/08/1989EP0305431A1 Improvements relating to d.c. motors
02/1989
02/21/1989US4806813 Motor
02/21/1989US4806808 Printed circuit board for external rotor motor with recess for Hall transducers
02/21/1989US4806717 Drive for a laundry machine
02/16/1989DE3726413A1 Electronically commutated DC motor having a fixing device for fixing the permanent magnets
02/14/1989US4804873 Unidirectional brushless motor
02/07/1989US4803408 Brushless DC motor system with optically scannable member for commutation
02/07/1989US4803389 Stepping motor, method of driving the same and drive circuit therefor
02/02/1989DE3823678A1 Liquid pump having an electric drive
02/01/1989EP0301164A2 Electrical drive or generator
02/01/1989EP0301156A2 Improvements to the pulsating current electric motor, deprived of the commutator
01/1989
01/31/1989US4801830 Brushless motor
01/31/1989US4801252 Slide bearing unit for small size fan
01/26/1989DE3723653A1 Electric motor, especially a record player motor
01/26/1989DE3723099A1 Permanent-magnet-excited dynamo machine having a slotted laminated core
01/25/1989EP0300126A1 Vehicle with internal combustion motor, generator and electrical drive motor
01/25/1989EP0300125A1 Electrical drive or generator
01/25/1989EP0300124A1 Electrical drive or generator
01/25/1989EP0300123A1 Electrical drive or generator
01/24/1989US4800307 Replaceable circuit board mounting system in outer rotor motors
01/18/1989EP0299512A2 Brushless DC motor
01/18/1989EP0299137A1 Electrical drive or generator
01/12/1989WO1989000358A1 Stator assembly for dynamoelectric machine
01/11/1989EP0298194A2 Electrical drive
12/1988
12/27/1988US4794293 Direct current electric motor
12/22/1988DE3818994A1 Disc store drive
12/21/1988EP0295718A2 Method for winding a motor with armature teeths and field magnet
12/20/1988US4792712 Rotor having magnets with enclosing shells
12/15/1988DE3818346A1 In-hub motor
12/14/1988EP0294541A1 Electrical drive or generator
12/07/1988CN87104305A Electric signal transmission system
12/06/1988US4789812 Device for controlling a motor for rotating a magnetic disc
11/1988
11/29/1988US4788465 Armature for DC motor
11/29/1988US4788464 Disc drive with integral spindle yoke
11/22/1988US4786834 Stator assembly for dynamoelectric machine
11/17/1988WO1988009079A1 Electric motor including gear
11/17/1988EP0291219A2 Compact three-phase permanent magnet rotary machine having low vibration and high performance
11/15/1988CA1244867A1 Brushless motor
11/10/1988DE3812638A1 Brushless, bipolar multi-phase DC motor
11/09/1988EP0290226A2 Disc drive spindle motor with low cogging torque
11/02/1988EP0289075A2 Reluctance electric machine
11/01/1988US4782272 Brushless d.c. drive system
11/01/1988US4782259 Frequency generator and motor with the same
10/1988
10/26/1988EP0287949A1 Screened inductance sensors for brushless dc motors
10/26/1988EP0287937A2 Tachometer generator for electric machines
10/25/1988US4779330 Method for manufacturing motor with stator on printed circuit assembly
10/19/1988EP0286905A1 Electronically commutated brushless DC motor
10/18/1988US4779165 Disk storage drive
10/18/1988US4779069 Apparatus and method for making integral coaxial communication and rotor magnets
10/13/1988DE3810199A1 Small electric motor (miniature electric motor)
10/06/1988WO1988007783A1 Two-phase rectifier electric motor
10/05/1988EP0285053A2 Fiber optic sensing system and method across working air gap of an electric motor
10/05/1988EP0285048A2 Electronically commutated collectorless D,C, motor
10/04/1988US4775813 Electric motor having formed stator sections with coplanar teeth
10/04/1988US4775812 Three section brushless motor
09/1988
09/27/1988US4774428 Compact three-phase permanent magnet rotary machine having low vibration and high performance
09/27/1988US4773829 Centrifugal fan driven by an electronic-commutation direct-current motor
09/27/1988US4773828 Blower
09/22/1988WO1988007285A1 Improvements relating to d.c. motors
09/21/1988EP0282876A2 Method for winding the coils for an air gap motor
09/20/1988US4772815 Variable refluctance position transducer
09/13/1988US4771200 Synchro generator asymmetric magnetically conductive rotor
09/07/1988WO1988006781A1 In-spindle motor assembly for disk drive and method for fabricating the same
09/06/1988US4769568 Reluctance rotary machine
09/06/1988US4769567 Brushless DC motor with cogging reduction
08/1988
08/25/1988WO1988006377A1 Engine starter and charger
08/25/1988WO1988006376A1 Electric motor
08/25/1988WO1988006375A1 Transverse flow machine in a collector arrangement
08/25/1988WO1988006372A1 Starter/charger of engine
08/25/1988WO1988006370A1 Starter/charger of engine
08/25/1988WO1988006369A1 Starter/charger of engine
08/25/1988DE3804549A1 DC motor which has no commutator but has a permanent-magnet rotor
08/11/1988WO1988005975A1 High speed dc motor
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