| Patents for H02K 21 - Synchronous motors having permanent magnet; Synchronous generators having permanent magnet (17,141) |
|---|
| 09/05/1989 | US4864169 Polyphase variable reluctance motor |
| 08/29/1989 | US4862028 Exciter rotor assembly |
| 08/24/1989 | WO1989007856A1 Improvements in or relating to electric power generators |
| 08/23/1989 | CN1035026A Permanent-magnet synchronous ac generator |
| 08/22/1989 | US4860176 Lighting device for vehicle |
| 08/15/1989 | US4858044 Disc drive spindle motor with low cogging torque |
| 08/10/1989 | WO1989007362A1 Generator for direct ignition in internal-combustion engines |
| 08/09/1989 | CN1034643A A single-pole stator dc and ac universal electric machine |
| 08/09/1989 | CN1034642A Auto-directional starting permanent-magnet synchronous motor |
| 08/08/1989 | US4855629 DC brushless motor with three teeth and two windings |
| 08/08/1989 | CA1258286A1 Permanent magnet variable reluctance generator |
| 08/01/1989 | US4853571 Intermediate bearing drives for clothes washing machines |
| 08/01/1989 | US4853567 Direct drive motor |
| 08/01/1989 | US4852540 High-efficiency charging and regulating system |
| 07/27/1989 | DE3800916A1 Field control for an electrical machine having permanent magnets in the excitation part |
| 07/25/1989 | US4851731 Structure of a flat-type brushless DC motor |
| 07/18/1989 | US4849728 Induction generator |
| 07/18/1989 | US4847982 Method of winding a three-phase, one-third pitch motor |
| 07/11/1989 | US4847526 Variant-pole electric motor |
| 07/11/1989 | US4845837 Method of making permanent magnet assembly |
| 06/29/1989 | WO1989006063A1 Electric motor with stop with magnetic locking and thermal flap for spatial vehicle controlled by such a motor |
| 06/29/1989 | DE3742502A1 Synchronous machine having a permanent-magnet rotor |
| 06/28/1989 | EP0322318A1 Electric motor having a stop member with magnetic locking, and thermal flap for a spacecraft controlled by such a motor |
| 06/27/1989 | US4843500 Disk storage drive |
| 06/27/1989 | US4843270 Electrical machine with unequal pole faces |
| 06/27/1989 | US4843269 Large air gap motor |
| 06/21/1989 | EP0321332A1 Highly efficient electric motor showing low torque ripple |
| 06/15/1989 | WO1989005540A1 A rotating electrical machine |
| 06/14/1989 | EP0319632A1 Electric motor with a multipolar permanent magnet rotor |
| 06/13/1989 | US4839552 Brushless DC motor |
| 06/13/1989 | US4839551 Brushless motor structure enabling accurate relative positioning of rotor and stator coils |
| 06/13/1989 | US4839546 Rotational noise reduction structure in dc motor with rotor magnets |
| 06/07/1989 | EP0319336A2 Brushless alternator and synchronous motor with optional stationary field winding |
| 06/07/1989 | EP0319335A2 Inductive torque transmitter with stationary field winding |
| 06/06/1989 | US4837474 D.C. motor |
| 06/06/1989 | US4835840 Method of making an improved disc rotor assembly |
| 06/06/1989 | US4835839 Method of fabricating a salient pole electronically commutated motor |
| 05/23/1989 | US4833355 Motor with armature teeth and field magnet |
| 05/23/1989 | CA1254607A1 Permanent magnet excited alternator compressor with direct current control |
| 05/16/1989 | US4831300 Brushless alternator and synchronous motor with optional stationary field winding |
| 05/16/1989 | US4831299 Homopole type AC generator |
| 05/16/1989 | US4831298 Inductive torque transmitter with stationary field winding |
| 05/16/1989 | US4830412 Starting system and method using a hybrid permanent magnet/induction machine |
| 05/09/1989 | US4829205 Dual-rotary induction motor with stationary field winding |
| 05/05/1989 | WO1989003936A1 Starting system and method using a hybrid permanent magnet/induction machine |
| 05/03/1989 | EP0313764A2 Energy conversion device |
| 05/03/1989 | CN1032719A Annular electric machine and torque converter thereof |
| 05/02/1989 | US4827171 Single-phase synchronous motor comprising a two-pole permanent-magnetic rotor and an eddy-current intermediate rotor |
| 04/20/1989 | WO1989003606A1 A reinforced permanent magnet device |
| 04/19/1989 | EP0312464A1 Electric machine in particular with radial air-gaps |
| 04/18/1989 | US4823040 Single-stage, two-phase of four-phase synchronous electric motor |
| 04/18/1989 | US4823037 DC Electric motor having field poles of permanent magnet |
| 04/12/1989 | EP0210219B1 Lighting apparatus for wheels of vehicles |
| 04/11/1989 | US4820951 Multiphase small size brushless DC motor |
| 04/11/1989 | CA1252509A1 Voltage regulated permanent magnet generator system |
| 04/06/1989 | WO1989002996A1 Dual generator phase shifting device |
| 04/05/1989 | EP0310223A1 Magnet composition |
| 04/05/1989 | CN2035545U Ac permanent-magnet generator |
| 04/04/1989 | US4817461 Dual generator phase shifting device |
| 03/23/1989 | WO1989002671A1 A motor or alternator |
| 03/23/1989 | WO1989002670A1 Armature for dc motor |
| 03/22/1989 | EP0307706A1 Array of permanent magnets |
| 03/21/1989 | US4814651 Explosion-proof electrical generator system |
| 03/21/1989 | US4813248 Drives for clothes washing machines |
| 03/16/1989 | DE3729977A1 Multi-pole generator |
| 03/14/1989 | US4812692 Motor |
| 03/14/1989 | US4812691 Device for improving the stability of rotation of the rotor of a single-phase synchronous motor |
| 03/08/1989 | EP0305670A2 Flywheel generator with improved ignition pilot device |
| 03/08/1989 | EP0305569A1 Electrical machines |
| 03/01/1989 | EP0304974A1 Alternator |
| 02/22/1989 | CN2033168U Disk illumination generating device for bicycle |
| 02/21/1989 | US4806812 Alternating-current electrical generator |
| 02/09/1989 | DE3804440A1 Generator energised by double magnetic field |
| 02/08/1989 | EP0302116A1 Method of inserting rotor of motor and motor suitable therefor |
| 02/07/1989 | US4803425 For use in AC tachometer |
| 02/07/1989 | US4803390 Dual motor drive arrangement for a small domestic appliance |
| 01/26/1989 | DE3723653A1 Electric motor, especially a record player motor |
| 01/26/1989 | DE3723099A1 Permanent-magnet-excited dynamo machine having a slotted laminated core |
| 01/18/1989 | EP0299512A2 Brushless DC motor |
| 01/17/1989 | US4798986 Electric generator having stationary induction coils |
| 01/10/1989 | US4797602 Rare earth-iron magnet rotor, silicon-iron alloy stator-high electrical resistance magnetism |
| 01/04/1989 | EP0297136A1 Generator system with integral permanent magnet generator exciter |
| 01/03/1989 | US4795936 Driven rotary shaft system using permanent magnets |
| 01/03/1989 | US4795278 Bearing assembly |
| 01/03/1989 | US4794941 Torque motor with hydraulic potentiometer for servo-distributor |
| 12/28/1988 | CA1247686A Magneto d.c. motor having elastic magnet mounting retainers |
| 12/21/1988 | EP0295718A2 Method for winding a motor with armature teeths and field magnet |
| 12/21/1988 | CN88204261U Dynamo for illumination of bicycle |
| 12/20/1988 | US4792711 Electric generator for inducing current in the field coil |
| 12/15/1988 | WO1988010022A1 Multiphase synchronous-design electric machine energized by permanent magnets |
| 12/15/1988 | DE3818346A1 In-hub motor |
| 11/29/1988 | US4788465 Armature for DC motor |
| 11/29/1988 | CA1245700A1 Synchronous a.c. motor |
| 11/23/1988 | CN88200850U Claw electrode synchronons permanent magnet micro motor |
| 11/17/1988 | EP0291295A2 Electrical generator system |
| 11/17/1988 | EP0291219A2 Compact three-phase permanent magnet rotary machine having low vibration and high performance |
| 11/09/1988 | EP0290226A2 Disc drive spindle motor with low cogging torque |
| 11/08/1988 | US4783609 Rotation detecting apparatus for use with compressor |
| 11/02/1988 | EP0288816A1 Rotor for electric motor |
| 11/01/1988 | US4782431 Lighting apparatus for wheels of vehicles |