| Patents for H02K 16 - Machines with more than one rotor or stator (6,539) |
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| 03/18/1992 | CN2099407U Speed governing type three phases squirrel-cage asynchronous motor |
| 03/11/1992 | CN2098753U Speed-regulating motor having differential and speed-dividing brake |
| 03/11/1992 | CN1059431A A.c. motor capable of regulating speed by use of speed super position |
| 03/10/1992 | US5094280 Disk chipper for the production of wood chips |
| 03/04/1992 | EP0472933A2 Fluid rotating apparatus |
| 03/04/1992 | CN1059237A Dual rotor ac stepless speed changeable motor controlled by eddy current brake |
| 02/26/1992 | CN2097468U Speed multiplying motor |
| 02/19/1992 | EP0470998A1 Electric machine. |
| 02/18/1992 | US5089734 Dual rotary ac generator |
| 02/12/1992 | CN2096154U Ac speed adjusting squirrel-cage induction motor |
| 02/06/1992 | WO1992001532A1 Main-spindle drive for a machine toole |
| 02/05/1992 | EP0469263A2 Electrical energy producing generator |
| 01/30/1992 | DE4023791A1 Double rotor electric motor with annular stator winding - induces co-operative currents in short-circuit windings of rigidly coupled internal and external rotors |
| 01/22/1992 | EP0467517A1 Dual-stator induction synchronous motor |
| 01/22/1992 | CN2094149U New-type asynchronous motor |
| 01/15/1992 | EP0269719B1 Dual permanent magnet generator |
| 01/15/1992 | CN2093460U A.c. speed-regulating brushless winding type induction motor |
| 12/12/1991 | WO1991020120A1 Direct current motor utilizing back electromotive force |
| 12/12/1991 | WO1991019347A1 Process for the manufacture of the stator of an electrical machine, preferably a three-phase alternator |
| 12/12/1991 | WO1991019346A1 Electrical machine, preferably a three-phase alternator for motor vehicles |
| 12/12/1991 | CA2083270A1 Direct current motor utilizing back electromotive force |
| 12/11/1991 | CN1056963A 稳恒电流发电机 Steady current generator |
| 12/04/1991 | EP0459889A1 Voice coil type actuator |
| 12/03/1991 | CA1292764C Variable speed controllable induction motor |
| 11/28/1991 | WO1991018206A1 Pump assembly |
| 11/27/1991 | CA2043208A1 Dual-stator induction synchronous motor |
| 11/26/1991 | US5068559 Induction motor switchable between series delta and parallel wye |
| 11/26/1991 | US5068554 Electric motor |
| 11/26/1991 | US5067932 Dual-input infinite-speed integral motor and transmission device |
| 11/21/1991 | EP0457216A2 Disc chipper for the production of wood chips |
| 11/19/1991 | US5066897 Linear driving apparatus |
| 11/12/1991 | US5065062 Motor-drive industrial robot |
| 11/05/1991 | US5063336 Mechanical stabilization system using counter-rotation and a single motor |
| 10/30/1991 | CN1055843A Double rotor, worm gear drive and full adjustable speed motor unit and its speed adjusting method |
| 10/23/1991 | CN1055627A Double-rotor speed-adjusting motor and the speed-adjusting method |
| 10/15/1991 | US5057726 Structureborne vibration-compensated motor arrangement having back-to-back twin AC motors |
| 10/08/1991 | US5055097 Rotary differential drive |
| 09/25/1991 | CN2085579U Induction and speed regulating asynchronous motor |
| 09/24/1991 | US5051639 Y-delta conversion switches on dual stator induction motor |
| 09/19/1991 | DE4107867A1 Alternator for motor vehicle current supply - has permanent magnet rotor and electromagnet motor for flux-voltage regulation |
| 09/18/1991 | EP0447257A2 Two-stator induction synchronous motor |
| 09/11/1991 | EP0445845A2 Electric drive for motor vehicles |
| 09/03/1991 | US5046150 Alternators |
| 08/28/1991 | CN1054151A Disk permanent-magnet dc motor |
| 08/21/1991 | EP0441970A1 Reluctance type motor |
| 07/24/1991 | CN1013333B Speed regulator for cage phase-shift motor |
| 07/23/1991 | US5033265 Coaxial hydraulic actuator system |
| 07/15/1991 | CA2007767A1 Rotary machine |
| 07/03/1991 | CN2080259U Stator feeding speed adjusting asynchronous motor |
| 07/02/1991 | US5028829 Compact motor mount for cassette drive |
| 07/02/1991 | US5028828 Dual drive mechanism with a redundant feature |
| 06/27/1991 | WO1991008919A1 Power unit for vehicles |
| 06/20/1991 | DE3941149A1 Immersion pump for handling waste water - with combination of two electric motor units to improve performance |
| 06/04/1991 | US5021698 Axial field electrical generator |
| 05/28/1991 | US5019755 Electric motor drive system |
| 05/15/1991 | CN2077169U Dual rotors asynchronous motor |
| 05/02/1991 | WO1991006147A1 Improvement to electric motor of the brushless direct current motor type |
| 05/02/1991 | EP0424611A1 Electric drive motor, especially for automatic control functions |
| 05/01/1991 | CN1051108A 感应电动机 Induction motor |
| 04/28/1991 | WO1991007005A1 Multiple-stator synchronous induction motor |
| 04/24/1991 | CN1050954A Rare-earth permanent-magnetic double-stator synchronous motor with cup type rotor |
| 04/17/1991 | EP0422539A1 Electrical machine with a rotor and a stator |
| 04/10/1991 | EP0421656A1 Induction motor |
| 04/10/1991 | EP0421655A1 Induction motor |
| 04/10/1991 | CN1050650A 感应电动机 Induction motor |
| 03/27/1991 | CN2074074U Variable-frequency controlled stepless speed-regulating motor |
| 03/21/1991 | WO1991003858A1 Reactance type motor |
| 03/13/1991 | EP0211000B1 Numerically-controlled electromechanical precision drive system |
| 02/20/1991 | EP0413452A1 Alternators |
| 01/23/1991 | CN1048772A Ac adjustable-speed motor |
| 01/16/1991 | CN2069630U Circular a.c. generators with three types of low, medium and high frequencies |
| 12/25/1990 | US4980595 Multiple magnetic paths machine |
| 12/12/1990 | CN1010823B Output-adjustable driver for machineries |
| 12/05/1990 | CN1010728B Compact horizontal hydraulic generator set |
| 12/04/1990 | US4975608 Switched reluctance motor with full accommutation |
| 11/28/1990 | CN1047403A Timepiece including at least two motors |
| 11/07/1990 | CN1046802A Electronic timepiece with analog display |
| 11/06/1990 | US4969133 Timepiece including at least two motors |
| 11/02/1990 | WO1990013937A1 Electric machine |
| 11/02/1990 | CA2064244A1 Electric machine |
| 10/31/1990 | DE3913633A1 Multiplex electric motor providing high output - has individual stator hollow cylinders within stator cooperating with rotor hollow cylinders |
| 10/24/1990 | EP0393606A1 Electronic time piece with analog display |
| 10/24/1990 | EP0393605A1 Electronic time piece with at least two motors |
| 10/24/1990 | EP0393486A1 Electrical machine, in particular rotating field machine with a plurality of magnetically coupled winding leads per slot |
| 10/17/1990 | EP0392780A1 Multi-stage electric drive |
| 10/17/1990 | EP0391939A1 Drives with double-rotating electric machines |
| 10/11/1990 | CA2014326A1 Multi-stage electric drive |
| 10/04/1990 | DE4008912A1 Superconducting electric machine - has one superconducting magnet which is held stationary in housing surrounding shaft |
| 10/03/1990 | CN1045899A Engine with high energy rotor motor |
| 09/27/1990 | CA2011732A1 Axial gap superconducting electrical machine |
| 09/26/1990 | CN2062921U High-speed ac asynchronous motor |
| 09/26/1990 | CN2062920U Low-, middle-, high-frequency ac generator with ring permanent magnet |
| 09/25/1990 | US4959605 Hybrid permanent magnet and variable reluctance generator |
| 09/19/1990 | CN2062518U Axial exciting induction motor |
| 08/30/1990 | DE3905717A1 Drive arrangement for actuating a closing component |
| 08/28/1990 | US4951514 Dual gyroscopic stabilizer |
| 08/22/1990 | CN1044878A Jointly-adjusted power-economizing method for electric motors and power-economizing motors |
| 08/16/1990 | DE3915526A1 Duplex-form electric motor or generator - has hollow rotor with internal stator coil and external stator coil |
| 08/08/1990 | EP0381575A1 Mechanical stabilisation system using single motor counter rotation |
| 08/01/1990 | CN1044367A Magnetic motor |