| Patents for H02K 29 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes, semiconductor devices (10,091) |
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| 01/09/1992 | DE4021599A1 Brushless DC motor with permanent magnet rotor - has stator pole shoes supported by shells at each end of rotor shaft |
| 01/08/1992 | EP0464644A1 Brushless motor incorporating an integrated circuit having a one-chipped peripheral circuit |
| 01/07/1992 | US5079488 Electronically commutated motor driven apparatus |
| 01/07/1992 | US5079467 Radial drive for fluid pump |
| 12/27/1991 | EP0462340A1 Direct current motor |
| 12/24/1991 | US5075608 Control system, electronically commutated motor system, draft inducer apparatus and method |
| 12/24/1991 | US5075606 Solid state DC fan motor |
| 12/24/1991 | US5075605 Inner-rotor commutation device |
| 12/17/1991 | US5073736 Brushless pump motor with built-in electronic control |
| 12/12/1991 | WO1991020120A1 Direct current motor utilizing back electromotive force |
| 12/12/1991 | CA2083270A1 Direct current motor utilizing back electromotive force |
| 12/05/1991 | DE4117801A1 Electric motor with radial flux rotor - has couple-producing stator and position or speed sensor |
| 12/03/1991 | US5070264 Brushless dc motor |
| 12/03/1991 | CA1292767C Polyphase dc motor with sensor poles |
| 11/28/1991 | WO1991018440A1 Power servomotor |
| 11/28/1991 | WO1991018206A1 Pump assembly |
| 11/27/1991 | EP0458211A2 Brushless motor and eprom or pc programmable control system |
| 11/26/1991 | US5068555 Dust exhauster for a vacuum cleaner having improved cooling |
| 11/21/1991 | EP0457389A1 Electromagnetic drive system |
| 11/21/1991 | EP0334901B1 Transverse flow machine in a collector arrangement |
| 11/19/1991 | CA1292268C Electronically commutated, collectorless direct-current motor |
| 11/13/1991 | CN1056193A Low-profile disk drive motor |
| 11/06/1991 | EP0455578A2 Hybrid single-phase variable reluctance motor |
| 11/06/1991 | EP0454685A1 Under-the-hub disk drive spin motor. |
| 10/31/1991 | WO1991016755A1 A drive assistance device for a golf buggy |
| 10/30/1991 | EP0454183A1 Rotary electric motor |
| 10/30/1991 | EP0246325B1 Cross-flow cooling fan device |
| 10/29/1991 | US5061868 Spindle motor |
| 10/29/1991 | US5061679 Drive system employing frictionless bearings including superconducting matter |
| 10/24/1991 | DE4012561A1 Electronically-controlled electric motor - uses induced current in stator control poles for switching motor winding current |
| 10/23/1991 | CN1055628A Dc motor with magnetic pole and magnetic field commutator |
| 10/22/1991 | US5059876 Brushless rotating electrical machine |
| 10/22/1991 | US5059875 Motor and controller |
| 10/15/1991 | US5057733 Modular coil cores for electric motor |
| 10/15/1991 | US5057731 Simplified spindle motor for disc drive |
| 10/15/1991 | US5057727 Shaft position sensor employing a wiegand-effect device |
| 10/15/1991 | US5057725 Rotary electric machine |
| 10/08/1991 | CA1290382C 12-step commutation device for an electric motor |
| 10/08/1991 | CA1290381C Electronically commutated, collectorless direct- current motor |
| 10/08/1991 | CA1290380C Disc drive spindle motor with low cogging torque |
| 10/01/1991 | WO1991015892A1 Method of making an electromagnetic transducer |
| 10/01/1991 | US5053664 Motor-driven fuel pump |
| 09/24/1991 | US5051641 Transversal flow machine in accumulator arrangement |
| 09/17/1991 | WO1991014308A1 Low-profile disk drive motor |
| 09/17/1991 | US5049769 Collectorless external-rotor motor with semiconductor cooling system |
| 09/17/1991 | CA2081375A1 Low-profile disk drive motor |
| 09/11/1991 | EP0446058A2 Constant current reluctance motor drive systems |
| 09/10/1991 | US5047682 Permanent magnet excited electric motor |
| 09/04/1991 | EP0444203A1 Three-phase reluctance motor |
| 09/04/1991 | CN2084251U Stator structure for dc motor without carbon brush |
| 09/03/1991 | US5045740 Brushless motor |
| 09/03/1991 | US5044897 Radial drive for implantable centrifugal cardiac assist pump |
| 08/27/1991 | US5043641 Circuit for and method of controlling 4-phase brushless DC motors |
| 08/21/1991 | EP0441970A1 Reluctance type motor |
| 08/20/1991 | US5041774 Brushless motor driving circuit |
| 08/20/1991 | US5041749 High speed, high power, single phase brushless DC motor |
| 08/20/1991 | US5040286 Method for making permanent magnet rotor |
| 08/20/1991 | US5040285 Method of manufacturing a motor element of an electric motor |
| 08/14/1991 | EP0441376A2 Frequency generator |
| 08/14/1991 | CN2082915U Hall switching element controlled dc brushless motor |
| 08/14/1991 | CN2082913U Multiphase multipolar square-wave permanent-magnet machine |
| 08/13/1991 | US5040085 Disk storage drive directed to disk drive details |
| 08/13/1991 | US5038460 Methods of manufacturing stator housing and rotor for miniature motor |
| 08/08/1991 | DE4003455A1 Single-phase synchronous motor with stator control poles - has semiconductor controlled switch with gate electrode connected to winding of secondary control pole of pair |
| 08/06/1991 | USRE33655 Laundry machine drive |
| 08/06/1991 | US5038065 Permanent magnet reversible synchronous motor |
| 08/02/1991 | WO1991011842A1 Stator for dynamoelectric machine |
| 07/31/1991 | CN2082047U D.c. motor without reverser |
| 07/24/1991 | EP0437617A1 Method of and device for controlling induction motor for compressor |
| 07/24/1991 | CN1053329A Rare-earth permanent magnet brushless dc motor of refrigerator |
| 07/24/1991 | CN1053328A Three-phase magnetic resistance motor |
| 07/23/1991 | US5034642 Permanent magnet rotor and motor |
| 07/17/1991 | EP0436721A1 Method of assembling a brushless motor |
| 07/17/1991 | EP0232402B1 D.c. electric motor |
| 07/16/1991 | CA1286385C Variable reluctance position transducer |
| 07/09/1991 | US5030864 Three-phase electrical machine with reduced cogging torque |
| 07/02/1991 | US5028829 Compact motor mount for cassette drive |
| 07/02/1991 | US5028216 Miniaturized direct current fan |
| 06/27/1991 | WO1991009449A1 Slotless, brushless, large air-gap electric motor |
| 06/27/1991 | WO1991009442A1 Magnetic flux return path for an electrical device |
| 06/26/1991 | EP0433479A1 Brushless DC motor and its rotor magnet |
| 06/25/1991 | US5027026 Brushless motor |
| 06/25/1991 | US5027025 Flat brushless motor |
| 06/25/1991 | US5027023 Electric motor including reduction-gear and circuit |
| 06/19/1991 | EP0305480A4 In-spindle motor assembly for disk drive and method for fabricating the same |
| 06/12/1991 | EP0431006A1 An electric motor. |
| 06/11/1991 | US5023527 Control circuits, electronically commutated motor systems and methods |
| 06/06/1991 | DE3939868A1 DC tachogenerator for brushless motor commutation and regulation - is juxtaposed on hollow shaft with encoder of angular position of rotor w.r.t. stator of motor |
| 06/05/1991 | CN1012760B Laser scanning motor having a rotating polygonal mirror and method of mfg. the same |
| 05/28/1991 | CA1284518C Reluctance motor having h-shaped stator cores |
| 05/15/1991 | CN1051467A Motor with isolated rotor from stator |
| 05/14/1991 | US5015903 Electronically commutated reluctance motor |
| 05/14/1991 | US5015893 Motor structure with magnetic interference shield |
| 05/14/1991 | US5015159 Fuel pump |
| 05/08/1991 | CN1051276A Electric motor with speed presetting function |
| 05/07/1991 | US5013957 Motor with toothed disk to secure the stator core |
| 05/07/1991 | US5013953 Stator assembly for a non-static cogging brushless DC motor and method of fabricating the same |
| 05/07/1991 | US5013947 Low-profile disk drive motor |
| 05/02/1991 | WO1991006147A1 Improvement to electric motor of the brushless direct current motor type |
| 05/02/1991 | EP0425478A2 External rotor motor, in particular collectorless direct-current motor |